FCC ID: 2AQ6KA1003 Module for SRD radar 60 GHz

A111-003 Pulsed Coherent Radar Operational description, User manual, and Installation instruction A111-003 Pulsed Coherent Radar Operational description, User manual, and Installation instruction A111-003 Overview The A111-003 (hereafter referred to as A111) is a radar system based on pulsed coherent radar

(PCR) technology and is setting a new benchmark for power consumption and distance accuracy fully integrated in a small package of 29 mm2. The A111 60 GHz radar system is optimized for high precision and ultra-low power, delivered as a one package solution with integrated Baseband, RF front-end and Antenna in Package (AiP). This will enable easy integration into any portable battery driven device. The A111 is based on leading-edge patented sensor technology with pico-second time resolution, capable of measuring absolute distance with mm accuracy up to a range of 2 m (1) and with configurable update rate. The A111 60 GHz radar remains uncompromised by any natural source of interference, such as noise, dust, color and direct or indirect light. Applications High precision distance measurements with mm accuracy and high update rate Ultra-low power consumption, e.g. average power consumption 0.2 mW at 0.1 Hz update rate, 3 mW at 10 Hz update rate and 20 mW at 100 Hz update rate Proximity detection with high accuracy and the possibility to define multiple proximity zones Motion detection, Speed detection Enables material detection High precision object tracking, enabling gesture control High precision tracking of 3D objects Monitor vital life signs such as breathing and pulse rate Only for factory installation in the interior of new passenger motor vehicles Features Fully integrated sensor

60 GHz Pulsed Coherent Radar (PCR) Integrated Baseband, RF front-end and Antenna in Package (AiP) 5.5 x 5.2 x 0.88 mm fcCSP, 0.5 mm pitch Accurate distance ranging and movements

- Measures absolute range up to 2 m (1)

o Absolute accuracy in mm

- Relative accuracy in m

- Possible to recognize movement and gestures for several objects

- Support continuous and single sweep mode

- HPBW of 80 (H-plane) and 40 degrees

(E-plane) , possible to adapt beam pattern using dielectric lens Easy integration

- One chip solution with integrated Baseband and RF

- Can be integrated behind plastic or glass without any need for a physical aperture

- Single reflowable component

1.8 V single power supply, enable with Power on Reset (PoR)

- Clock input for crystal or external reference clock, 20-80 MHz

- SPI interface for data transfer, up to 50 MHz SPI clock support INTERRUPT support

(1) 2m ranging is guaranteed for an object size, shape and dielectric properties corresponding to a spherical corner reflector of 5 cm radius. 2021 Copyright by Acconeer 2022-01-04 Page 2 of 36 A111-003 Pulsed Coherent Radar Operational description and User manual Table of Contents 1 Revision History ............................................................................................................................ 4 2 Description ..................................................................................................................................... 5 2.1 Functional Block Diagram ................................................................................................... 6 3 Pin Configuration and Functions ................................................................................................ 7 4 Specifications ................................................................................................................................ 9 Absolute Maximum Ratings ................................................................................................ 9 Environmental Sensitivity .................................................................................................... 9 4.3 Recommended Operating Conditions ............................................................................. 10 Electrical Specification ....................................................................................................... 10 Power Consumption Summary ......................................................................................... 11 5 Timing Requirements ................................................................................................................. 13 5.1 Serial Peripheral Interface ................................................................................................. 13 6 Typical Characteristics ............................................................................................................... 15 6.1 Radar Loop Gain Pattern ................................................................................................... 15 6.2 Relative Phase Accuracy ................................................................................................... 16 7 Functional Description ............................................................................................................... 17 Acconeer Software ............................................................................................................. 18 Software Integration ........................................................................................................... 18 Power Sequences............................................................................................................... 19 8 Layout Recommendations ......................................................................................................... 22 Bill of Material (BoM) .......................................................................................................... 23 XTAL ..................................................................................................................................... 24 External Clock Source ....................................................................................................... 25 Power Supply ...................................................................................................................... 26 4.1 4.2 4.4 4.5 7.1 7.2 7.3 8.1 8.2 8.3 8.4 9 Regulatory Approval ................................................................................................................... 28 9.1 ETSI ...................................................................................................................................... 28 9.1.1 EU type examination certificate .................................................................................... 28 9.2 Declaration of conformity FCC ......................................................................................... 29 9.2.1 Host integrator instructions ........................................................................................... 30 10 Mechanical Data ..................................................................................................................... 32 10.1 Moisture Sensitivity Level and Recommended Reflow Profile .................................... 34 10.2 RoHS and REACH Statement .......................................................................................... 34 11 Abbreviations ........................................................................................................................... 35 Disclaimer ............................................................................................................................................ 36 Page 3 of 36 2022-01-04 2021 Copyright by Acconeer A111-003 Pulsed Coherent Radar Operational description, User manual, and Installation instruction 1 Revision History Revision Comment V1.0 Released version 2021 Copyright by Acconeer 2022-01-04 Page 4 of 36 A111-003 Pulsed Coherent Radar Operational description and User manual 2 Description The A111-003 (hereafter referred to as A111) is an optimized low-power, high-precision, 60 GHz radar sensor with integrated Baseband, an RF front-end and an Antenna in Package (AIP). The sensor is based on pulsed coherent radar (PCR) technology, featuring a leading-edge patented solution with picosecond time resolution. The A111 is the perfect choice for implementing high-

accuracy, high-resolution sensing systems with low-power consumption. Ordering information Part number Package Size (nom) Primary component container A111-003-T&R fcCSP50 5.2 x 5.5 x 0.88 mm Tape & reel A111-003-TY fcCSP50 5.2 x 5.5 x 0.88 mm 13 Tray Acconeer A111 marking Page 5 of 36 2022-01-04 2021 Copyright by Acconeer A111-003 Pulsed Coherent Radar Operational description, User manual, and Installation instruction 2.1 Functional Block Diagram Figure 2.1. The A111 functional block diagram. The A111 silicon is divided into four functional blocks: Power, Digital, Timing and mmWave radio. The Power functional block includes LDOs and a Power on Reset (PoR) block. Each LDO creates its own voltage domain. The PoR block generates a Reset signal on each power-up cycle. The host interfaces the Power functional block of the sensor via 1.8V Single power supply and ENABLE. The Digital functional block includes sensor control. The data memory stores the radar sweep data from the ADC. The host interfaces the Sensor via an SPI interface, a Clock (XIN, XOUT), INTERRUPT signal and optional CTRL signal. The Timing block includes the timing circuitry. The PLL digital clock output is used to drive digital logic and is synthesized from external crystal (XIN/XOUT) or external reference frequency (XIN ref clk). The operational oscillator (XIN) frequency range is 20-80 MHz. The mmWave radio functional block generates and receives radar pulses and includes transmitter

(TX), receiver (RX) and interfaces toward the integrated antennas. The A111 operates in the 57-64 GHz band. 2021 Copyright by Acconeer 2022-01-04 Page 6 of 36 A111 One Package SolutionA111 SiliconTXRXPLLLDOsPoRCommunicationProgrammemoryDatamemorySPI (4)INTERRUPTXIN (ref clk)XOUT1.8V Singlepower supplyENABLEDigitalPowerTimingmmWave RadioTx ant.Rx ant.CTRL (optional) A111-003 Pulsed Coherent Radar Operational description and User manual B NC A E F G H K Pin A2 NC B1 NC B2, B9 GND GND GND B10 C1 C2 C9 C10 D1 3 Pin Configuration and Functions The below figure shows the A111 pin configuration, top view:

1 2 3 4 5 6 7 8 9 10 NC CTRL C VIO_1a VIO_2a GND D VIO_1b VIO_2b Supply ENABLE I/O CLK Analog XOUT NC J VBIAS SPI_SS VIO_3a XIN SPI_CLK SPI_MISO SPI_MOSI INTERRUPT VIO_3b Figure 3.1. Pin configuration of the A111 sensor, top view. The below table shows the A111 total number of 50 pins:

Pin name Pin type Description Comment Must no connect A3-A8 GND Ground Must be connected to solid ground plane A9 CTRL I/O Optional control signal. Must be connected to either host MCU or ground optional Must no connect Ground Ground Ground Must be connected to solid ground plane Must be connected to solid ground plane Must be connected to solid ground plane VIO_1a Supply voltage Supply voltage, RF part (1) VIO_2a Supply voltage Supply voltage, RF part (1) GND Ground Must be connected to solid ground plane VIO_1b Supply voltage Supply voltage, RF part (1) D2, D9 GND Ground Must be connected to solid ground plane D10 VIO_2b Supply voltage Supply voltage, RF part (1) GND Ground Must be connected to solid ground plane E1, E2, E9, E10 Page 7 of 36 2022-01-04 2021 Copyright by Acconeer A111-003 Pulsed Coherent Radar Operational description, User manual, and Installation instruction G1, G10 H1 J1 J2 J3, J5, J6, J8 J9 J10 K2 K3 K4 K5 K6 K7 K8 Pin name Pin type Description Comment Pin F1 GND F2, F9 GND Ground Ground Must be connected to solid ground plane Must be connected to solid ground plane F10 ENABLE I/O Must be connected to host MCU available GPIO. ENABLE is active high GND Ground Must be connected to solid ground plane GND H2, H9 GND Ground Ground Must be connected to solid ground plane Must be connected to solid ground plane H10 XOUT CLK XTAL out No connect if no XTAL VBIAS Analog The analog VBIAS must be connected to VIO_3 SPI_SS I/O SPI slave select, active low select. GND Ground Must be connected to solid ground plane VIO_3a Supply voltage Supply voltage, digital part (1) XIN CLK XTAL input OR external ref clk input 1.1V domain SPI_CLK SPI_MISO I/O I/O GND GND Ground Ground SPI Serial Clock Master Input Slave Output Must be connected to solid ground plane Must be connected to solid ground plane SPI_MOSI I/O Master Output Slave Input GND Ground Must be connected to solid ground plane INTERRUPT I/O Interrupt signal, that is used as an interrupt in the host, more details are found in section 7, Description. mandatory K9 VIO_3b Supply voltage Supply voltage, digital part (1) Table 3.1. A111 sensor pin list

(1) VIO_1a and VIO_1b are short circuit inside the sensor. VIO_2a and VIO_2b are short circuit inside the sensor. VIO_3a and VIO_3b are short circuit inside the sensor. 2021 Copyright by Acconeer 2022-01-04 Page 8 of 36 A111-003 Pulsed Coherent Radar Operational description and User manual 4 Specifications 4.1 Absolute Maximum Ratings The below table shows the A111 absolute maximum ratings over operating temperature range, on package, unless otherwise noted:

Parameter Description Min. Max. Unit VIO_1 (2) VIO_2 (2) VIO_3 XIN (1) I/O TOP TSTG 1.8 V RF power supply 1.8 V RF power supply 1.8 V digital power supply Clock input port for crystal or reference clock I/O supply voltage VIO_3+0.5 0 0 0

-0.5

-0.5

-40 2.0 2.0 2.0 1.6 85 150 V V V V V C C Operating temperature range High temperature storage Table 4.1. Absolute maximum ratings

(1) XIN input may not exceed 0V when ENABLE is low.

(2) VIO_1 and VIO_2 must never exceed VIO_3. Stresses beyond those listed in table 4.1 may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these conditions or at any other conditions beyond those indicated under Recommended Operating Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods of time may affect device reliability. 4.2 Environmental Sensitivity The below table shows the A111 environmental sensitivity:

Parameter Storage temperature Standard JESD22-A103 (1) Reflow soldering temperature (1) J-STD-020 (1) Moisture Sensitivity Level JESD22-A113 (1) ESD, Charge Device Model (CDM) JS-002, Class C2 ESD, Human Body Model (HBM) JS-001, Class 1C Latch-up JESD78, Class I Max. 150(1) 260 MSL3 500 1000 Pass Unit C C V V Table 4.2 Environmental sensitivity

(1) For reference only. The package is generically qualified by the manufacturer. Acconeer does not guarantee adherence to standard. Page 9 of 36 2022-01-04 2021 Copyright by Acconeer A111-003 Pulsed Coherent Radar Operational description, User manual, and Installation instruction 4.3 Recommended Operating Conditions The below table shows the A111 recommended operating conditions, on package:

Parameter Typ. Max. Unit The below table shows the A111 electrical DC specification conditions, on package, Top = -40C to 85C:

Operating power supply voltage, VIO_1 Operating power supply voltage, VIO_2 Operating power supply voltage, VIO_3 I/O operating range XIN operating range (1) Operating temperature (Top) Table 4.3. Recommended operating conditions

(1) XIN input must not exceed 0V when ENABLE is low. 4.4 Electrical Specification Parameter Current into any power supply I/O VIL Low-level input voltage I/O VOL Low-level output voltage I/O VOH High-level output voltage I/O IOL (VOL = 0.4V) I/O IOH (VOH = VIO_3-0.4) I/O IIL Low-level input current I/O IIH High-level input current XIN VIL Low-level input voltage XIN VIH High-level input voltage XIN IIL Low-level input current XIN IIH High-level input current Table 4.4. Electrical DC conditions Min. 1.71 1.71 1.71

-0.3

-0.3

-40 Min. 0

-0.3 0 1.6 4.56 3.42

-0.3 1.0 1.8 1.8 1.8 1.89 1.89 1.89 1.2 85 VIO_3+0.3 V V V V V C Typ. Max. 100 Unit mA 0.10*VIO_3 VIO_3+0.3 V V V V mA mA A A V V A A 0.4 VIO_3 12.4 9.16

<1

<1 0.4 1.2

<1

<1 7.8 5.8 I/O VIH High-level input voltage 0.90*VIO_3 2021 Copyright by Acconeer 2022-01-04 Page 10 of 36 A111-003 Pulsed Coherent Radar Operational description and User manual The below table shows the A111 electrical AC specification conditions, on package, at Top = -40C to 85C:

Parameter I/O output operating frequency(2) I/O minimum positive and negative pulse XIN operating frequency Table 4.5 Electrical AC conditions Min. 0 6.25 20 Typ. Max. 100 80(1) Unit MHz ns MHz

(1) The maximum external reference clock frequency is 80 MHz and the maximum XTAL frequency is 50 MHz.

(2) Load capacitance 2 pF. 4.5 Power Consumption Summary Table 4.6 summarizes the steady-state current consumption for the sensor states, average current ratings at all power terminals (VIO_1, VIO_2, VIO_3), VIO 1.8 V, at Top = -40C to 85C:

Typ. Max. Unit Parameter OFF OFF OFF HIBERNATE HIBERNATE HIBERNATE SLEEP SLEEP SLEEP READY READY READY ACTIVE ACTIVE ACTIVE MEASURE, PROFILE 1 MEASURE, PROFILE 1 MEASURE, PROFILE 1 MEASURE, PROFILE 2 MEASURE, PROFILE 2 MEASURE, PROFILE 2 MEASURE, PROFILE 3 MEASURE, PROFILE 3 MEASURE, PROFILE 3 Page 11 of 36 VIO_1 VIO_2 VIO_3 VIO_1 VIO_2 VIO_3 VIO_1 VIO_2 VIO_3 VIO_1 VIO_2 VIO_3 VIO_1 VIO_2 VIO_3 VIO_1 VIO_2 VIO_3 VIO_1 VIO_2 VIO_3 VIO_1 VIO_2 VIO_3 29 31 0 29 31 410 764 767 1.59 1.32 768 31.0 2.85 1.34 60.8 3.94 2.31 61.8 4.01 2.37 61.8 4.30 2.80 62.4 139 158 23 139 158 2064 1069 1082 3.48 1.90 1085 41.6 4.00 1.91 79.9 5.32 3.08 81.1 5.40 3.16 81.1 5.76 3.67 81.8 A A A A A A A A mA mA A mA mA mA mA mA mA mA mA mA mA mA mA mA 2022-01-04 2021 Copyright by Acconeer A111-003 Pulsed Coherent Radar Operational description, User manual, and Installation instruction MEASURE, PROFILE 4 MEASURE, PROFILE 4 MEASURE, PROFILE 4 MEASURE, PROFILE 5 MEASURE, PROFILE 5 MEASURE, PROFILE 5 VIO_1 VIO_2 VIO_3 VIO_1 VIO_2 VIO_3 5.20 4.18 62.4 6.37 6.06 62.4 6.86 5.32 81.8 8.29 7.61 81.7 mA mA mA mA mA mA Table 4.6. Average current ratings at power terminals for the sensor states. 2021 Copyright by Acconeer 2022-01-04 Page 12 of 36 A111-003 Pulsed Coherent Radar Operational description and User manual 5 Timing Requirements 5.1 Serial Peripheral Interface The Serial Peripheral Interface (SPI) is a 4-wire serial bus, used for configuration and reading output from the A111 radar sensor. The A111 radar sensor is an SPI slave device connected to the SPI master, as described in figure 5.1. The A111 allows several devices to be connected on the same SPI bus, with a dedicated slave-select signal. Daisy-chain is not supported. Figure 5.1. SPI master-slave connection The serial data transfer input (MOSI) and output (MISO) to the A111 are synchronized by the SPI_CLK. The Slave Select signal (SS) must be low before and during transactions. The MOSI is always read on the rising edge of SCLK and the MISO changes value on the falling edge of SPI_CLK

(SPI mode 0, CPOL/CPHA = 0). SS requires release in between transactions. See figure 5.2 and table 5.1 for timing characteristics. Figure 5.2: Timing diagram of SPI, CPOL=0 and CPHA=0. Page 13 of 36 2022-01-04 2021 Copyright by Acconeer Host(SPI Master)A111(SPI Slave)A111(SPI Slave)SPI_CLKSPI_MOSISPI_SS1SPI_SS2SPI_MISOSPI_ClKMOSIMISOSSSS setup timeMSBMOSI hold timeMOSI setup timeMISO propagation delaySS hold timeLSB151514141313001122 A111-003 Pulsed Coherent Radar Operational description, User manual, and Installation instruction Parameter Clock frequency (1) SS setup time SS hold time MOSI setup time MOSI hold time Min. Typ. 1.0 2.0 1.0 2.5 Max. 50 Unit MHz 5.5 ns ns ns ns ns MISO propagation delay (2) Table 5.1 SPI timing characteristics

(1) The 50 MHz clock frequency requires that the reference clock is at least 20.625 MHz

(2) 10pF load on SPI_MISO 2021 Copyright by Acconeer 2022-01-04 Page 14 of 36 A111-003 Pulsed Coherent Radar Operational description and User manual 6 Typical Characteristics 6.1 Radar Loop Gain Pattern The Radar Loop Gain pattern includes the gain in both the TX and RX radar path and is defined as the angular separation between the two points at which the gain has decreased by 3dB relative to the maximum main lobe value, when the radar itself is used to measure the reflected power. For details regarding the measurement setup, refer to Hardware and physical integration guideline, chapter 1.2. Conditions: TA = 25 C, VDD = 1.8 V. Tested on 5 XR112 devices. The below figure shows the Radar Loop Gain Radiation Pattern normalized to Free Space Sensor Boresight at Elevation plane (E-plane). Figure 6.1. Normalized radar loop gain radiation pattern at E-plane. The below figure shows the Radar Loop Gain Radiation Pattern normalized to Free Space Sensor Boresight at Horizontal plane (H-plane). Page 15 of 36 2022-01-04 2021 Copyright by Acconeer A111-003 Pulsed Coherent Radar Operational description, User manual, and Installation instruction Figure 6.2. Normalized radar loop gain radiation pattern at H-plane 6.2 Relative Phase Accuracy Conditions: TA = 25 C, VDD = 1.8 V. Statistical result based on sweep count 100, 20 tested devices. Standard deviation of phase estimation, measured at a distance of 0.35 m. Object metal cylinder, 40 mm in diameter. Average STD of relative phase estimation:

6.1 degrees in relative phase accuracy, translates to 42 m in relative distance accuracy. 2021 Copyright by Acconeer 2022-01-04 Page 16 of 36 A111-003 Pulsed Coherent Radar Operational description and User manual 7 Functional Description The below figure shows the A111 system integration with Host MCU:

Figure 7.1. System integration The Acconeer software is executed on Host MCU that handles sensor initiation, configuration, sweep acquisition and signal processing. The Serial Peripheral Interface (SPI) is a 4-wire serial bus, used for configuration and reading output from the A111 radar sensor. The A111 radar sensor is an SPI slave device, connected to the SPI master (Host MCU), and allows several devices to be connected on same SPI bus, with a dedicated slave-select signal. Daisy-chain is not supported. The sensor provides support for ENABLE and INTERRUPT as interrupt signal, always output, that is used as an interrupt in the Host MCU. The sensor supports an optional control signal: CTRL, which is configured through software, e.g. for controlling the operating state of the sensor to idle in Hibernate. Page 17 of 36 2022-01-04 2021 Copyright by Acconeer Host MCUA111SensorTCXOENABLE x1SPI x4INTERRUPT x11.8V single power supplyCLK ref. 20-80 MHzCTRL x1 (optional) A111-003 Pulsed Coherent Radar Operational description, User manual, and Installation instruction 7.1 Acconeer Software The Acconeer software has been written in C and is portable to any OS and HW platform. The Acconeer software is executed on Host MCU and delivered as binaries, except for integration software that is delivered as source code. The below figure shows the A111 software offer. Figure 7.2. Acconeer Software offer The RSS (Radar System Software) provides output at two different levels, Service and Detector. RSS provides an API (Application Programming Interface) for Application utilization of various Services and Detectors. The Service output is pre-processed sensor data as a function of distance E.g. Envelope data

(amplitude of sensor data), Power bin data (integrated amplitude data in pre-defined range intervals), IQ modulated data (representation in cartesian) etc. Detectors are built on Service data as input and the output is a result E.g. Distance detector that presents distance and amplitude result based on envelope Service etc. Customer can either use Acconeer detector or develop their own signal processing based on Service data. Acconeer provides several example applications to support customer own application development. Also, customer guidelines are provided for application development utilizing the Acconeer RSS API. Acconeer provides several reference drivers as source code, e.g. Support for Cortex M4, Cortex M7 MCUs. 7.2 Software Integration Integration software shall implement functions defined in a definitions file provided in Acconeer Software offer. This includes handling of SPI, ENABLE, INTERRUPT and CTRL, as well as potential OS functions. See reference HAL - User Guide for guideline on software integration and HAL implementation

(https://www.acconeer.com/products). 2021 Copyright by Acconeer 2022-01-04 Page 18 of 36 A111-003 Pulsed Coherent Radar Operational description and User manual 7.3 Power Sequences The power-up sequence is described using the recommended integration shown in the below figure:

Figure 7.3. Recommended integration of the A111 radar sensor. The power up sequence is shown in below figure. Page 19 of 36 2022-01-04 2021 Copyright by Acconeer A111INTERRUPTSPI_SSSPI_MISOSPI_MOSISPI_CLKENABLEVIO_1a,bVIO_2a,bVIO_3a,bVBIASXINXOUTGNDs1.8VX1C5C4R1C1C2C3HostCTRLR2 A111-003 Pulsed Coherent Radar Operational description, User manual, and Installation instruction Figure 7.4. Power up sequence The power up sequence is initiated by turning on VIO_3a,b. It must be turned on before or simultaneously with ENABLE and VIO_1-2a,b. ENABLE and VIO_1-2a,b can be turned on in any order and independently of each other. A111 should however not be considered as in state ON until all supply voltage levels are stable and ENABLE is high. The time constant t1 in figure 7.4 denotes this time. The actual value of t1 depends on the power supply and the decoupling capacitors used. If the CTRL signal is used, it must be held at 0V during time t1. Next step in the power up sequence is to have a settling time for the XTAL oscillator to stabilize, shown as time t2 in figure 7.4. This may take up to several milliseconds depending on the XTAL performance. The sensor does not require any settling time if it is integrated using an external reference clock. It is advised to have the clock inactive at 0 V while ENABLE is inactive. Now the A111 radar sensor is ready for SPI communication. 2021 Copyright by Acconeer 2022-01-04 Page 20 of 36 TimeVIO_3a,bENABLEt1t2XINVIO_1-2a,bCTRL A111-003 Pulsed Coherent Radar Operational description and User manual After power up is complete, the sensor is loaded with a program. Up until the point where the sensors program is started, the INTERRUPT is high impedance. However, after the sensors program has started the INTERRUPT is configured to a push-pull CMOS output. It is therefore required that the host I/O is configured as input before any programs are started on the sensor. The power down sequence is described in Figure 7.5. Figure 7.5. The power down sequence The power down sequence is initiated by setting ENABLE low. The crystal oscillator will be disabled when ENABLE is set low. If an external reference clock is used, it is advised to disable it simultaneously with ENABLE. After that, VIO_1-2a,b can be turned off. Time constant t3 (refer to Figure 7.5) later, VIO_3a,b can be disabled. The constant t3 >=0. The I/O inputs on A111 (including CTRL if it is being used) must be set to 0V before or simultaneously with VIO_3a,b going low, otherwise the internal ESD protection diodes will draw current from the I/O source. Page 21 of 36 2022-01-04 2021 Copyright by Acconeer TimeVIO_3a,bENABLEXINVIO_1-2a,bt3CTRL A111-003 Pulsed Coherent Radar Operational description, User manual, and Installation instruction 8 Layout Recommendations A111 sensor free space integration should take the following into consideration:

Any material above the sensor should have as low permittivity and loss as possible, e.g. plastic or To conclude on optimum distance from the sensor, a simulation/measurement investigation is glass with low permittivity. required. The sensor antennas are of a folded dipole type, with its ground reference in the package ground plane, extending over the whole area of the sensor. To further enhance the directivity of the sensor, the package ground plane should be extended to the package by soldering all GND connections of the sensor to the board top layer ground. This top layer ground plane below the sensor should be continuous and should have low impedance. The below table shows the sensor gain loss versus solid ground plane area. Ground plane area Sensor gain loss 625 mm2 425 mm2 225 mm2 127 mm2 29 mm2 0 dB

-0.2 dB

-0.4 dB

-2.2 dB

-4.0 dB Table 8.1 Simulated relative maximum gain as function of extended solid ground plane area. The area is quadratic. It is recommended to keep the layout around XIN and XOUT symmetrical to the XTAL and capacitors. VIO_1a and VIO_1b are short circuit inside the sensor and are recommended to be connected to each other on the PCB as well. VIO_2a and VIO_2b are short circuit inside the sensor and are recommended to be connected to each other on the PCB as well. VIO_3a and VIO_3b are short circuit inside the sensor and are recommended to be connected to each other on the PCB as well. It is recommended to have decoupling capacitors on the supplies placed as close as possible to the supply terminals. It is recommended as minimum 100 nF in parallel with 1 uF decoupling capacitance on each supply. 2021 Copyright by Acconeer 2022-01-04 Page 22 of 36 A111-003 Pulsed Coherent Radar Operational description and User manual 8.1 Bill of Material (BoM) The below table shows BOM for integration of the A111:

Component Value Description C1, C2, C3 1 F VIO_1, VIO_2, VIO_3 decoupling R1, R2 X1 C4, C5 Table 8.2 BOM list 100 k INTERRUPT and CTRL pull down resistor XTAL 24 MHz, Epson TSX-3225 (optional) 8 pF (1) XTAL freq. tuning capacitor (optional)

(1) See details in chapter 7.1 XTAL for C4, C5 value calculation. See figure 8.1 that shows the optional XTAL populated. Page 23 of 36 2022-01-04 2021 Copyright by Acconeer A111-003 Pulsed Coherent Radar Operational description, User manual, and Installation instruction 8.2 XTAL The input clock can origin from a crystal (XTAL), connected to XIN and XOUT. The A111 sensor has a built-in XTAL oscillator and by adding an external XTAL component, as shown in the below figure 8.1, a reference design without any external clock reference supplied is possible. Note however, that the external clock reference still is supported and if used instead of an external XTAL, it is connected to XIN. Figure 8.1. External XTAL schematics. To enable the internal XTAL oscillator to drive the external resonator, the relation in equation 1 must be fulfilled. Equation 1 0.8 0.61 < 0.7 Equation 2

= 2( ) Equation 3

= + 2 The capacitance values are calculated in equation 2. CL and RESR are XTAL parameters and vary from XTAL to XTAL. The stray capacitance is the sum of the capacitance between XIN and XOUT, which are found in the traces on PCB and in the package; 2 to 5 pF is a general estimation. Example:

f = 26 MHz CL = 9 pF RESR = 40 ohm Assuming that Cstray = 5 pF gives C4, C5 = 8 pF and that the condition is met with the result 0.63 <

0.7. 2021 Copyright by Acconeer 2022-01-04 Page 24 of 36 C4C5GNDGNDGNDXOUTXINTSX-3225XTAL 26 MHzI/OGNDI/OGND A111-003 Pulsed Coherent Radar Operational description and User manual 8.3 External Clock Source The input clock can origin from an external clock source connected to XIN, with XOUT left open. As an example given in table 8.3, maximum phase noise figures are given using 40 MHz external clock reference. Offset frequency (Hz) Min. Typ. Max. Unit 1000 10 000 100 000 1 000 000 10 000 000

-80

-100

-120

-140

-155 dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz Table 8.3. Phase noise using 40 MHz external clock reference Page 25 of 36 2022-01-04 2021 Copyright by Acconeer A111-003 Pulsed Coherent Radar Operational description, User manual, and Installation instruction 8.4 Power Supply The A111 sensor has got three power supplies where the VIO_3 power supply is sensitive to power supply ripple. Power supply ripple on VIO_3 may degrade performance since VIO_3 supplies the internal clock generation blocks. Table 8.4 provides the required power supply ripple specification for VIO_3. Frequency (Hz) Min. Typ. Max. 10 000 100 000 1 000 000 3 000 000 10 000 000 100 000 000 18.7 2.6 0.26 0.09 0.23 3.0 Unit mVpp mVpp mVpp mVpp mVpp mVpp Table 8.4: Required power supply ripple specification for VIO_3 Low-cost LC filter solution Acconeer provides recommended low-cost LC filter solution, the recommended filter is displayed in figure 8.2. The values of the component demonstrate an example filter design, exact values depend on switching frequency and ripple amplitude of the supply regulator. However, be aware of LC filter peaking at the series resonance frequency 1/(2*sqrt(LC)). A small resistor, 250 m in the example filter, can be inserted to lower the Q factor of the filter. In certain applications, where disturbances at the series resonance frequency is present, the filter may not be an optimal solution and an external LDO such as TPS7A8801 or equal is recommended to use instead of the low-cost LC filter. Figure 8.2: Low cost LC supply filter 2021 Copyright by Acconeer 2022-01-04 Page 26 of 36 VIO_3a,b22uF2.2uH250 m Supply100nF A111-003 Pulsed Coherent Radar Operational description and User manual Figure 8.3: Simulated performance with 10mVpp supply ripple with low cost LC supply filter. Page 27 of 36 2022-01-04 2021 Copyright by Acconeer A111-003 Pulsed Coherent Radar Operational description, User manual, and Installation instruction 9 Regulatory Approval To be noted is that some regulatory specifications also specify the usage of the sensor, so users of the sensor must check regulatory requirements for their own use case and determine if the regulatory approvals described below are sufficient. 9.1 ETSI Hereby, Acconeer declares that the A111 sensor is compliant with directive 2014/53/EU. 9.1.1 EU type examination certificate 2021 Copyright by Acconeer 2022-01-04 Page 28 of 36 A111-003 Pulsed Coherent Radar Operational description and User manual 9.2 Declaration of conformity FCC Hereby, Acconeer declares that the A111-003 sensor has limited single-modular transmitter approval granted by FCC. Acconeer has not approved any changes to this device. Any changes or modifications to this device could invalid the FCC approval. The host manufacturer should refer to guidance in KDB 996369. In addition, the host manufacturer must seek guidance and approval from Acconeer to ensure that the module limiting conditions are fulfilled for the host product and that the installation instructions provided by Acconeer in this document has been followed. In section 9.2.1 Host integrator instructions of this User manual it is explicitly stated what the host manufacturer must do to ensure that the waiver conditions are fulfilled for the product being installed in the interior of new passenger motor vehicles. Acconeer will review test data, host design, and host documentation prior to giving manufacturer approval. Changes or modifications not expressly approved by the Acconeer could void the users authority to operate the equipment. The host product manufacturer is responsible for compliance to any other FCC rules that apply to the host not covered by the modular transmitter grant of certification. The A111-003 sensor meets the title 47 of the Code of Federal Regulations, part 15 section 15.255 for intentional radiators operating in the 57-71 GHz band, with the addition of the waiver conditions outlined in DA 21-814 and listed here below. Intended uses are restricted to vehicle-bound applications like passenger presence detection to include children inadvertently left in vehicles in hot weather; seat belt reminder/airbag suppression; intruder alarm; and automotive access gesture control to detect foot movement to close a sliding door. The Acconeer pulse-coherent radar shall be certified for compliance with all the technical specifications applicable to operation under 47 CFR Part 15, with the exception of the following provisions in 47 CFR 15.255(a)(2) and (c)(3), which are waived to allow the device to operate as a radar on new passenger motor vehicles in the 57-64 GHz band at 5% duty cycle, evaluated in 0.125 s time-averaged windows, at a 3 dBm average EIRP evaluated in 0.125 s time-averaged windows, and a pulse duration not to exceed 6 ns. The radar shall be restricted to factory installation in the interior of new passenger motor vehicles for the primary purpose of in-cabin monitoring functions and shall not be marketed in after-market add-on products. The grantee shall include clear and complete installation instructions that explain this restriction and a copy of these instructions shall be submitted along with the application for equipment authorization. If the radar is installed such that it is not visible (e.g., behind the headliner), then the required equipment labeling in accordance with the provisions of 47 CFR 2.925 and 15.19 shall be provided in the vehicles Owners Manual. The certification grant shall specify these restrictions. Operations under this waiver may not be used to transmit data. Users of Acconeer radars must be made aware through a disclosure in the vehicle Owners Manual or an equivalent means that that operation is subject to the conditions that no harmful interference is caused and that any interference must be accepted. This waiver and its conditions shall apply only to Acconeer radars intended for installation in passenger motor vehicles as described herein and are not to be considered to apply generally to any other radars or field disturbance sensors that will operate in different environments where further analysis would be necessary to assess the potential for impact to other authorized users. The waiver conditions granted herein are not transferable to any third party via 2.933 or any other means of technology transfer. The waiver is explicitly conditioned on any changes to our rules that may be adopted in a future rulemaking proceeding in accordance with the terms of this order. Page 29 of 36 2022-01-04 2021 Copyright by Acconeer A111-003 Pulsed Coherent Radar Operational description, User manual, and Installation instruction 9.2.1 Host integrator instructions This section provides guidance to the host integrator per sub section of chapter 2.0 INTEGRATION INSTRUCTIONS KDB 996369 D03 and lists what the host integrator must do for Acconeer to give manufacturer approval that the host product complies with title 47 of the Code of Federal Regulations, part 15 section 15.255 for intentional radiators operating in the 57-71 GHz band, with the addition of the waiver conditions outlined in DA 21-814. 2.2 List of applicable FCC rules The A111-003 module meets the title 47 of the Code of Federal Regulations, part 15 section 15.255 for intentional radiators operating in the 57-71 GHz band, with the addition of the waiver conditions outlined in DA 21-814, and presented in section 9.2 of this User manual. 2.3 Summarize the specific operational use conditions The A111-003 module shall be restricted to factory installation in the interior of new passenger motor vehicles for the primary purpose of in-cabin monitoring functions and shall not be marketed in after-

market add-on products. Intended uses are restricted to vehicle-bound applications like passenger presence detection to include children inadvertently left in vehicles in hot weather; seat belt reminder/airbag suppression; intruder alarm; and automotive access gesture control to detect foot movement to close a sliding door. One or several of these modules may be installed per vehicle, within the interior of the vehicle. Installers must safeguard that modules are installed in a manner than ensures that passengers will not have access to the modules. Figure 9.1 shows an example of how the modules can be installed for the allowed use in passenger motor vehicles (i.e., passenger presence detection; seat belt reminder/airbag suppression; intruder alarm; and automotive access gesture control to detect foot movement to close a sliding door). This module integration example fulfills the requirement that the module is integrated in the interior of new passenger motor vehicles for the primary purpose of in-cabin monitoring functions. Figure 9.1: Example of how the modules can be installed for the allowed use in passenger motor vehicles. 2021 Copyright by Acconeer 2022-01-04 Page 30 of 36 A111-003 Pulsed Coherent Radar Operational description and User manual The module may not be used to transmit data. The design does have data inputs and there is no possibility for the user to modulate data on the transmitted signal 2.4 Limited module procedures The A111-003 module has limited single-modular transmitter approval granted by FCC. Host product manufacturers are responsible to follow the integration guidance and to perform a limited set of transmitter module verification testing, to ensure that the end product is in compliance with the FCC rules. The host product manufacturer is responsible for compliance to any other FCC rules that apply to the host not covered by the modular transmitter grant of certification. 2.5 Trace antenna designs 2.6 RF exposure considerations The product has integrated antennas in package, it is not possible to connect trace antenna. MPE RF exposure testing is not needed as the available maximum time-averaged power of the module is no more than 1 mW, according to 47 CFR 1.1307(b)(3)(i)(A). Co-location of this module with other transmitters that operate simultaneously are required to be evaluated using the FCC multi-transmitter procedures. 2.7 Antennas The modular approval covers use with dielectric lens that converge or diverge the electromagnetic waves at least in one plane of radiation (E or H plane). 2.8 Label and compliance information The host device shall be labelled to identify the modules within the host device, which means that the host device shall be labelled to display the FCC ID of the module preceded by words "Contains transmitter module" or "Contains", E.g. Contains FCC ID: 2AQ6KA1003 If the module is installed such that it is not visible (e.g., behind the headliner), then the required equipment labeling in accordance with the provisions of 47 CFR 2.925 and 15.19 shall be provided in the vehicles Owners Manual. The module integrator must include below interference statement to vehicle Owner's manual:

This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. 2.9 Information on test modes and additional testing requirements Testing for the modular approval of the A111-003 has been performed using a binary file which represents highest Tx emission configuration. This test binary is available in the software provided by Acconeer and can be used for that the module as installed in a host complies with FCC requirements. 2.10 Additional testing, Part 15 Subpart B disclaimer The host product manufacturer is responsible for compliance to any other FCC rules that apply to the host not covered by the modular transmitter grant of certification. Page 31 of 36 2022-01-04 2021 Copyright by Acconeer A111-003 Pulsed Coherent Radar Operational description, User manual, and Installation instruction 10 Mechanical Data The A111 is available in fcCSP package for mounting on a substrate. The below table shows mechanical data:

Body Z (height) 0.821 0.899 Parameter Body X Body Y Ball pitch Ball diameter Ball height Ball count Min. 5.15 5.45 0.45 0.25 0.15 Typ. 5.20 5.50 0.50 0.30 0.24 50 Max 5.25 5.55 0.55 0.35 Unit mm mm mm mm mm mm

Table 10.1. Mechanical data The A111 footprint is shown in Figure 10.1. Figure 10.1. A111 footprint 2021 Copyright by Acconeer 2022-01-04 Page 32 of 36 A111-003 Pulsed Coherent Radar Operational description and User manual The physical layout of the A111 sensor is shown in Figure 10.2, 10.3 and 10.4. Figure 10.2. Physical layout of the A111 sensor, top view. Figure 10.3. Physical layout of the A111 sensor, side view. Page 33 of 36 2022-01-04 2021 Copyright by Acconeer A111-003 Pulsed Coherent Radar Operational description, User manual, and Installation instruction Primary datum C and seating plane are defined by the spherical crowns of the solder balls. Dimension is measured at the maximum solder ball diameter, parallel to primary datum C. All dimensions and tolerances conform to ASME Y14.5 2009. Figure 10.4. Physical layout of the A111 sensor, bottom view. The bottom view shows 50 solder balls. The pitch of the BGA balls is 500 m, the ball diameter is 300 m 5 m and the collapsed ball height is 0.244 0.050 mm. 10.1 Moisture Sensitivity Level and Recommended Reflow Profile Acconeer A111 sensor is a Moisture Sensitive Devices (MSD) in accordance to the IPC/JEDEC specification. The Moisture Sensitivity Level (MSL) relates to the packaging and handling precautions required. A111 sensor is rated at MSL level 3. Maximum number of reflow passes recommended for A111 is 2. Soldering process qualified during qualification with Preconditioning MSL 3: 30C. 60%r.h., 192h, according to JEDEC JSTD20, and qualified for soldering heat resistance according to JEDEC J-STD-

020. 10.2 RoHS and REACH Statement Acconeer A111 sensor meet the requirements of Directive 2011/65/EC of the European Parliament and of the Council on the Restriction of Hazardous Substances (RoHS) and the requirements of the REACH regulation (EC 1907/2006) on Registration, Evaluation, Authorization and Restriction of Chemicals. 2021 Copyright by Acconeer 2022-01-04 Page 34 of 36 A111-003 Pulsed Coherent Radar Operational description and User manual 11 Abbreviations Analog digital converter Antenna in package Application programming interface

"Conformit Europene" (which literally means "European Conformity") Ball grid array Bill of materials Clock phase Clock polarity Equivalent isotropically radiated power Electrostatic discharge European Telecommunications Standards Institute Federal Communications Commission Flip-chip chip-scale package ADC AiP API BGA BOM CE CPHA CPOL EIRP ESD ETSI FCC fcCSP GND HAL HPBW LDO MCU MISO MOSI NC PCR PLL PoR RCS RF RX SPI SS STD TCXO TX XTAL Ground Hardware abstraction layer Half power beamwidth Low-dropout regulator Microcontroller unit Master input, slave output Master output, slave input No connect Pulse coherent radar Phase locked loop Power on reset Radar cross section Radio frequency Receiver Serial peripheral interface Slave select Standard deviation Transceiver Crystal Temperature compensated crystal oscillator Page 35 of 36 2022-01-04 2021 Copyright by Acconeer A111-003 Pulsed Coherent Radar Operational description, User manual, and Installation instruction Disclaimer The information herein is believed to be correct as of the date issued. Acconeer AB (Acconeer) will not be responsible for damages of any nature resulting from the use or reliance upon the information contained herein. Acconeer makes no warranties, expressed or implied, of merchantability or fitness for a particular purpose or course of performance or usage of trade. Therefore, it is the users responsibility to thoroughly test the product in their particular application to determine its performance, efficacy and safety. Users should obtain the latest relevant information before placing orders. Unless Acconeer has explicitly designated an individual Acconeer product as meeting the requirement of a particular industry standard, Acconeer is not responsible for any failure to meet such industry standard requirements. Unless explicitly stated herein this document Acconeer has not performed any regulatory conformity test. It is the users responsibility to assure that necessary regulatory conditions are met and approvals have been obtained when using the product. Regardless of whether the product has passed any conformity test, this document does not constitute any regulatory approval of the users product or application using Acconeers product. Nothing contained herein is to be considered as permission or a recommendation to infringe any patent or any other intellectual property right. No license, express or implied, to any intellectual property right is granted by Acconeer herein. Acconeer reserves the right to at any time correct, change, amend, enhance, modify, and improve this document and/or Acconeer products without notice. This document supersedes and replaces all information supplied prior to the publication hereof. 2021 by Acconeer All rights reserved Acconeer AB Vstra Varvsgatan 19 211 77 MALM Sweden 2021 Copyright by Acconeer www.acconeer.com info@acconeer.com

+46 10 218 92 00 2022-01-04 Page 36 of 36

A111-003 Label declaration FCC A111-003 Label declaration FCC Table of Contents 1 Revision History ............................................................................................................................ 3 2 A111 Label Declaration ............................................................................................................... 4 2021 Copyright by Acconeer 2021-12-16 Page 2 of 4 A111-003 Label declaration FCC 1 Revision History Revision Comment V1.0 Released version Page 3 of 4 2021-12-16 2021 Copyright by Acconeer A111-003 Label declaration FCC 2 A111-003 Label Declaration The size of the A111-003, hereafter referred to as A111, package is 5.2 x 5.5 x 0.88 mm and thus FCC ID label not possible to be placed on the module. Note that the A111 package includes A111 marking information and thus not possible to add FCC ID labelling information due to the small form factor. See figure 1. Figure 1, Acconeer A111 marking FCC ID is placed in the User Manual (chapter 9), see separate document. FCC ID is also placed on the device packaging, see following picture of the packaging artwork with correct markings:

2021 Copyright by Acconeer 2021-12-16 Page 4 of 4

Date: 26th of January 2022 Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 TO WHOM IT MAY CONCERN Attestation Statement FCC ID: 2AQ6KA1003 In the matter of Acconeers and CTC Advanced submitted documentation for compliance of the electronic module assigned FCC ID 2AQ6KA1003, Acconeer hereby states that the product has been designed to fulfill the require-

ments under the FCC waiver order DA 21-814. Acconeer provides a user manual to the module integrator, which states the following:

The module integrator must include the below interference statement in the vehicle owner's manual:

This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions:

(1) this device may not cause interference, and (2) this device must accept any interference, including inter-

ference that may cause undesired operation of the device. The host manufacturer should refer to guidance in KDB 996369. In addition, the host manufacturer must seek guidance and manufacturer approval from Acconeer to ensure that the module limiting conditions are fulfilled for the host product and that the installation instructions provided by Acconeer in the User manual has been followed. Acconeer will review test data, host design, and host documentation prior to giving manufacturer approval. Changes or modifications not expressly approved by the Acconeer could void the users authority to operate the equipment. The host product manufacturer is responsible for compliance to any other FCC rules that apply to the host not covered by the modular transmitter grant of certification. Acconeer acknowledges that the waiver conditions for the module are not transferable to any third party via 2.933 or any other means of technology transfer. The module will only be marketed and sold to host integrators who will adhere with waiver conditions set forth in DA 21-814 for factory installation in the interior of new passenger motor vehicles sold in the United States. Acconeer acknowledges that the waiver is explicitly conditioned on any changes to FCC rules that may be adopted in a future rulemaking proceeding in accordance with the terms of DA21-814. Sincerely, Mikael Egard, COO Postal address Vstra Varvsgatan 19 SE-211 77 Malm Visiting address Vstra Varvsgatan 19 SE-211 77 Malm Telephone:

+46 (0)10 218 92 00 E-mail info@acconeer.com Website www.acconeer.com

Date: 20th of January 2022 Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 TO WHOM IT MAY CONCERN Attestation Statement FCC ID: 2AQ6KA1003 Justification for DA 21-814: Operations under this waiver may not be used to transmit data. It is not possible to justify by measurement that no data are transmitted. Therefore, hereby we declare, in our sole of responsibility, that the device is not able to submit data by design. The design does have data inputs and there is no possibility for the user to modulate data on the transmitted signal. Sincerely, Mikael Egard, COO Postal address Vstra Varvsgatan 19 SE-211 77 Malm Visiting address Vstra Varvsgatan 19 SE-211 77 Malm Telephone:

+46 (0)10 218 92 00 E-mail info@acconeer.com Website www.acconeer.com

CONFIDENTIALITY REQUEST for Certification Service in USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048

<2021-01-28>

TO WHOM IT MAY CONCERN Pursuant to Paragraphs 0.457 and 0.459 of the Commissions Rules (47 C.F.R.) and Section 552(b) (4) of the Freedom of Information Act, we requests confidentiality for the following products:

FCC ID 2AQ6KA1003 For the product stated above, we request that the following information be held confidential;

Model name A111-003/Module for SRD radar 60 GHz Exhibits Long-Term Confidentiality Short-Term Confidentiality Short-Term Confidentiality Days 180 180 180 180 External Photos Internal Photos Block Diagram Schematics Test Setup Photos Users Manual Parts List Tune Up Operational Descriptions The long-term confidentiality exhibits contain our trade secrets and proprietary information that could be of benefit to our competitors. The short-term confidentiality on the basis of ensuring that business sensitive information remains confidential until the actual marketing of our new device. If you have any questions, please feel free to contact me at the address shown below. Sincerely, Name / Title: Mikael Egard / COO Company: Acconeer AB Adress: Vstra Varvsgatan 19, 211 77 Malm, Sweden Phone: +46 (0)10 218 92 00 E-Mail: mikael.egard@acconeer.com

RSP-100, Issue 12, August 2019 Modular Approval Attestation Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 Certification and Engineering Bureau Innovation, Science and Economic Development Canada Spectrum Engineering Branch 3701 Carling Avenue, Building 94 Ottawa, Ontario K2H 8S2 Subject: FCC / ISED Modular Approval Statement Grantee Code Equipment Product Code Check your GC here. Click Grantee Search. Check your CN here. FCC ID:

CN:

(Company Number) HVIN:

(Hardware Version Id. Number) HMN:

(Host Marketing Name) UPN:

(Unique Product Number) PMN:

(Product Marketing Name) FVIN:

(Firmware Version Id. Number) TO WHOM IT MAY CONCERN Pursuant to Paragraphs RSP-100, Issue 12 and CFR 15.212, we herewith declare for our module. Modular approval requirement

(a) The radio elements shall have the radio frequency circuitry shielded. Physical/discrete and tuning capacitors may be located external to the shield, but shall be on the module assembly. Yes No *

*Please provide a detailed explanation if the answer is No.:

(b) If the module has modulation/data input(s), they shall be buffered in order to ensure that the module will comply with the requirements set out in the applicable Radio Standards Specification (RSS) and Part 15 under conditions of excessive data rates or over-modulation.

*Please provide a detailed explanation if the answer is No.:

(c) The module shall have its own power supply regulation on the module itself. This is to ensure that the module will comply with the requirements set out in the applicable standard regardless of the design of the power supplying circuitry in the host product that houses the module.

*Please provide a detailed explanation if the answer is No.:

(d) The module shall comply with the provisions for external power amplifiers and antennas detailed in the applicable RSS and rule part. The equipment certification application shall contain:

i. a detailed description of the configuration of highest antenna gain for each type of transmitting antenna for licence-exempt modules;

ii. the maximum transmitting antenna gain for licence modules; and iii. a detailed description of the configuration of lowest antenna gain for each type of receiving antenna for Dynamic Frequency Selection

(DFS) modules with removable antenna(s).

*Please provide a detailed explanation if the answer is No.:

Modular approval requirement

(e) The module shall be tested for compliance with the applicable standard in a stand-alone configuration

(i.e. the module shall not be inside another product during testing). Yes No *

*Please provide a detailed explanation if the answer is No.:

(f) The module complies or will comply with applicable RSS-102 exposure requirements and any applicable FCC RF exposure requirement (1.1307(b), 1.1310, 2.1091, and 2.1093) in its intended configuration/integration in a host.

*Please provide a detailed explanation if the answer is No.:

(g) The module must be labeled with its permanently affixed label (indicating ISED certification number, HVIN and FCC identifier), or use an electronic display (see KDB Publication 784748 and RSP-100, section 5).

*Please provide a detailed explanation if the answer is No.:

(h) The module must comply with all specific rules applicable to the transmitter, including all the conditions provided in the integration instructions by the grantee.

*Please provide a detailed explanation if the answer is No.:

(i) (Only applicable for FCC) The module must contain a permanently attached antenna, or contain a unique antenna connector, and be marketed and operated only with specific antenna(s), per 15.203, 15.204(b), 15.204(c), 15.212(a), 2.929(b). For further information concerning antenna connectors see: DA-00-1087.

*Please provide a detailed explanation if the answer is No.:

If you have any questions, please feel free to contact us at the address shown below Best regards, Company Name:

Company Address:

Contact Name:

Signature:

Phone:

Fax:

E-mail:

Signature Date:

INFO for applicant: Limited Modolar Approval (LMA) may be granted when one or more of the requirements in the table above cannot be demonstrated. LMA will also be issued in those instances where applicants can demonstrate that they will retain control over the final installation of the device, such that compliance of the end product is assured. In such cases, an operating condition on the LMA for the module must state that the module is only approved for use when installed in devices produced by a specificmanufacturer. When LMA is sought, the application for equipment certification must specifically state how control of the end product, into which the module will be installed, will be maintained, such that full compliance of the end product is always ensured. Document Version 2.1 2020-10-30

Federal Communications Commission Washington, D.C. 20554 July 9, 2021 DA 21-814 Ms. Laura Stefani Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C. 701 Pennsylvania Avenue, NW, Suite 900 Washington, DC 20004 Subject:

Request by Acconeer AB for Waiver of 47 CFR 15.255(c)(3) rules ET Docket No. 21-48 Dear Ms. Stefani:

This is in reply to your Request for Waiver of Section 15.255 of the Commissions rules filed on behalf of your client, Acconeer AB (Acconeer). Acconeer requests a waiver of Section 15.255 of the Commissions rules to permit a grant of equipment authorization for a radar designed to operate in the 57-64 GHz band at higher power than specified in the rules.1 Acconeer describes its technology as a pulse-coherent radar (PCR) sensor that consumes very low power and that will be used for vehicle safety and security applications, including the detection of children left in hot passenger motor vehicles who can be subject to heat stroke and death.2 In seeking the waiver, Acconeer states that the power levels in Section 15.255 do not allow it to achieve the signal-to-noise ratio needed for its radar technology to achieve high accurate measurements with low false positive rates.3 Acconeer claims that its PCR radar design, when operated under its requested technical limits, will result a maximum power spectral density that is lower than the maximum amount we had previously found permissible for radars operating under a Frequency Modulated Continuous Wave design. This, it states, is because the energy generated by the Acconeer radar design is spread across a wide band in a transitory manner.4 In response to a Public Notice seeking comment on Acconeer's filing, Alps Alpine, the Alliance for Automotive Innovation, NEXTY Electronics, and Volvo Car Corporation submitted filings during the comment and reply comment period in support of the application.5 Alps Alpine, for example, characterizes Acconeer's device as the best solution for providing vehicle safety and security applications because of its ability to provide high accuracy rates in a small form factor, and asserts that it has the potential to save lives, reduce injuries and provide enhanced security.6 In subsequent ex parte filings directed to Acconeer's request as well as those by other entities seeking waivers to operate 1 Acconeer AB Request for Waiver of Section 15.255 of the Commissions rules, ET Docket No. 21-48, (filed Dec. 23, 2020) (Acconeer Request). 2 Id. 3 Id.at 2-3. 4 Id. at 7 and Fig. 2 at 8. 5 OET Seeks Comment on Acconeer AB Request for Waiver of Section 15.255(c)(3) of the Commission Rules for Vehicle Radar Operation in the 57-64 GHz band, ET Docket No. 21-48, Public Notice, DA 21-155, 36 FCC Rcd 1531 (2021); Comments of Alps Alpine and Volvo Car Corporation and reply comments of NEXTY Electronics in ET Docket No. 21-48; See also Letter from Hilary M. Cain, Vice President, Alliance for Automotive Innovation, to Marlene H. Dortch, Secretary, FCC, filed March 12, 2021 in ET Docket No. 21-48. 6 Alps Alpine Comments in ET Docket No. 21-48 at 1. unlicensed 60 GHz radars, parties representing unlicensed communications device users raised concerns that, without unlicensed radars operating under appropriate duty cycle and other technical rules, unlicensed communications devices could be prevented from using virtual reality and other applications that are under development.7 Last month, Acconeer and representatives of unlicensed communications device interests jointly proposed technical operating conditions that they claim will allow Acconeer's radars and unlicensed communications devices to coexist. We discuss these most recent filings below. When Acconeer submitted its request in December 2020, it referred to the waiver we granted to Google in 2018 to operate unlicensed radars at a higher power than permitted by our rules and asked to operate under the same technical characteristics as those allowed for Google.8 In that 2018 Order, we waived Section 15.255(c)(3) for Google to deploy a mobile radar to enable touchless control of device functions or features at +10 dBm peak transmitter conducted output power, +13 dBm peak EIRP level, and +13 dBm/MHz peak power spectral density, with a 10% duty cycle in any 33 ms interval.9 Subsequently, in April 2021, we granted waivers to six parties to permit the use of radars operating at the higher power levels associated with the Google Waiver when installed in passenger motor vehicles.10 In granting those waivers, we waived Section 15.255(c)(3) based on our prior analysis from the Google Waiver; and also Section 15.255(a)(2), which limits radar operations to fixed operation or when used as short-range devices for interactive motion sensing, because of concern that this rule might otherwise limit use in some passenger motor vehicle use modes. After filing its initial petition for waiver, Acconeer amended its request in part to account for discussions it has had with unlicensed communications devices stakeholders. Acconeer, Facebook, Intel, and Qualcomm jointly submitted a letter on June 22 2021, which Acconeer further clarified in a June 28, 2021 letter.11 These submissions document the parties agreement as to the technical operating conditions under which Acconeer would be able to operate under a waiver.12 Specifically, Acconeer asks the Commission to waive the +10 dBm peak EIRP and -10 dBm peak conducted output power in section 15.255(c)(3) of the rules to allow its radar to operate at +3 dBm average EIRP without a limit on either peak EIRP or conducted output power; this 3 dBm average EIRP would be evaluated in 0.125 s time average window and also requires 5% duty cycle in 0.125 s time-averaged windows, with a pulse duration not to exceed 6 ns.13 Acconeer asserts that its radar operating under the amended requested technical parameters will not create a more interfering operating environment for licensed and authorized 7 See, e.g., Letter from Alan Norman, Facebook, Inc.; Carlos Cordeiro, Intel Corporation; and John Kuzin, Qualcomm Inc., to Marlene Dortch, FCC, ET Docket No. 21-48 (filed May 10, 2021). 8 Acconeer Request at 3, citing Google LLC Request for Waiver of Section 15.255(c)(3) of the Commission's Rules Applicable to Radars used for Short-Range Interactive Motion Sensing in the 57-64 GHz Frequency Band, ET Docket No. 18-70, Order, 33 FCC Rcd 12542 (OET 2018) (Google Waiver). 9 Id., 33 FCC Rcd at 12548-49, para. 14. Google developed the Soli sensor to capture motion in a three-dimensional space using a radar beam, which enables persons to use gestures and motions to control a smartphones functions or features. See www.google.com/soli. Google also received a waiver of 15.255(b)(2), which restricts airborne operation, and that is not relevant to Acconeer's automotive-related use model. Google Waiver, 33 FCC Rcd at 12542, para. 1. 10 Waiver of Section 15.255 of the Commissions rules, ET Docket Nos. 20-15, 20-121, 20-263, 20-264, 20-434, 20-

435, DA 21-407, Order (2021) (2021 Waiver Order). 11 Letter from Laura A. Stefani, counsel to Acconeer AB, Alan Norman, Public Policy Director, Facebook, Carlos Cordeiro, CTO Wireless, Intel, and John Kuzin, Vice President and Regulatory Counsel, Qualcomm to Marlene H. Dortch, Secretary, FCC in ET Docket No. 21-48 (filed June 22, 2021) (June 22 ex parte letter); Letter from Laura A. Stefani, counsel to Acconeer AB to Marlene H. Dortch, Secretary, FCC in ET Docket No. 21-48 (filed June 28, 2021) (June 28 ex parte letter). 12 Acconeer represents the conditions as a method to allow for equipment authorization under a waiver while new, permanent rules are being considered. June 22 ex parte letter. 13 June 22 ex parte letter and Jun 28 ex parte letter. 2 users in the band, in large part because the radars transmissions will be significantly lower than other devices operating in the band, and would be largely confined to within or immediately near vehicles.14 Acconeers amended request does not change the requested use cases as outlined in its original request, which continue to be vehicle-bound applications (i.e., passenger presence detection to include children inadvertently left in vehicles in hot weather; seat belt reminder/airbag suppression; intruder alarm; and automotive access gesture control to detect foot movement to close a sliding door).15 We are authorized to grant a waiver under Section 1.3 of the Commissions rules if the petitioner demonstrates good cause for such action.16 Good cause, in turn, may be found and a waiver granted where particular facts would make strict compliance inconsistent with the public interest.17 To make this public interest determination, the waiver cannot undermine the purposes of the rule, and there must be a stronger public interest benefit in granting the waiver than in applying the rule.18 As noted in our prior waiver orders, both Sections 15.255(c)(3) and 15.255(a)(2) are designed to prevent unlicensed devices from causing harmful interference to other authorized users in the band.19 Here, we find that Acconeers vehicular use cases are closely related to the waivers confined to the narrow deployment scenario in the automotive environment that we previously considered, and granted, in the 2021 Waiver Order.20 In the 2021 Waiver Order, we determined that radar operation in the 57-64 GHz band in passenger motor vehicles will be conducted at comparatively much lower power levels than the levels already permitted to communication devices (which operate both indoors and outdoors) in the same band.21 We also determined that, with the radar installed inside a vehicle, the vehicles metallic chassis and the glass windows will block or attenuate the radar signals;22 and when combined with the extensive radio frequency propagation loss in the 57-64 GHz band, the radar signals will be further attenuated outside the vehicle.23 Acconeers amended requested technical parameters are more restrictive than those specified in the Google Waiver and the 2021 Waiver Order. Specifically, the average EIRP limit is lower and the duty cycle is shorter, and the pulse-coherent radar technology employed by the Acconeer radar has lower peak power spectral density than the FMCW technology considered in the 2021 Waiver Order.24 Thus, our prior determination that the conditions in both the Google Waiver and the 2021 Waiver Order are 14 June 28 ex parte letter. 15 Acconeer Request at 3. 16 47 C.F.R. 1.3. See also ICO Global Communications (Holdings) Limited v. FCC, 428 F.3d 264 (D.C. Cir. 2005);

Northeast Cellular Telephone Co. v. FCC, 897 F.2d 1164 (D.C. Cir. 1990); WAIT Radio v. FCC, 418 F.2d 1153 (D.C. Cir. 1969). 17 Northeast Cellular, 897 F.2d at 1166; see also ICO Global Communications, 428 F.3d at 269 (quoting Northeast Cellular); WAIT Radio, 418 F.2d at 1157-59. 18 See, e.g., WAIT Radio, 418 F.2d at 1157 and Northeast Cellular, 897 F.2d at 1166. 19 2001 Waiver Order at para. 40. 20 Vayyar Imaging Ltd. Request for Waiver of Section 15.255(c)(3) of the Commissions Rules for Radars used for Interactive Motion Sensing in the frequency band 57-64 GHz, Order, DA 21-407 (OET 2021) at para. 40 (2021 Waiver Order). 21 2021 Waiver Order at para. 40. 22 Some researchers indicate that at 60 GHz, regular glass provides 11 dB/centimeter attenuation and mesh glass, 32 dB/centimeter. See e.g., C. Anderson and T. Rappaport, In-building Wideband Partition Loss Measurements at 2.5 and 60 GHz, IEEE Trans. Wireless Communications, vol. 3, no. 3, pp. 922928 (2004.) 23 Free space path loss (FSPL) for a 60 GHz signal is 77.56 dB at 3 meters from the transmitter (i.e., FSPL (in dB)=

20 log F + 20 log d 147.55, where F is the signal frequency in Hertz and d is the distance from the transmitter in meters). 24 Acconeer Request at 7-9. 3 sufficient to prevent harmful interference to licensed users in the band gives us confidence that the technical parameters under which Acconeer will operate its vehicle-specific radars are more than sufficient to prevent harmful interference to licensed users in the band. We further find that it serves the public interest to adopt technical standards here that differ from those that we previously adopted for Google and other automotive-related radar applications. As Acconeer and representatives of unlicensed communications device manufacturers state, Acconeer's PCR technology differs from the frequency modulated continuous wave radars that we had previously addressed, even while serving similar vehicular-safety purposes.25 For this reason, we agree with these parties that we should adopt technical parameters that are designed to be compatible with Acconeer's technology. Doing so will promote greater coexistence between Acconeer's unlicensed PCR radars and communication device operations while not increasing the likelihood of interference to licensed and authorized users. We also find that the second element of the waiver standard has been met. As in the vehicular use cases in the 2021 Waiver Order, granting Acconeers waiver will provide substantial public benefit in improving passenger safetymost notably the prevention of vehicular pediatric heatstroke deathswhile at the same time enhancing opportunities for additional vehicular automation and theft prevention applications.26 The same special circumstances that supported our decision in the 2021 Waiver Order apply here. There, we recognized that the automotive industry, consumer interest groups, and an expert Federal government agency had all identified the prevention of pediatric hot car deaths as a significant priority. Waiving our rules was necessary for 60 GHz radars to be used to meet this objective;

specifically, the waiver permitted the radars to be operated in mobile vehicles and at a power level that gives sufficient resolution to detect an infants respiration. Furthermore, granting a waiver to Acconeer can promote additional competition in the vehicular radar space and spread the benefits of preventing hot car child deaths to even more Americans. This further supports our finding that there is a stronger public interest in granting the waiver than in applying the rule. The conditions under which Acconeer must operate have been designed to facilitate coexistence between it and other unlicensed device users in the short term, while not precluding a more thorough consideration of this matter in the context of a rulemaking proceeding or other appropriate process. We note that a draft Notice of Proposed Rulemaking that considers unlicensed radar use under Section 15.255 has been circulated for the Commissioners consideration and potential adoption at the FCCs July 2021 Open Meeting.27 As with the prior waiver grants, we recognize that there are strong benefits in acting on the waiver request at this time regardless of any potential rulemaking activity. Here, the narrow relief we are providing will permit the deployment of innovative radar applications to provide potentially life-saving applications in this case, radars deployed in passenger motor vehicles to detect children left unattended in hot cars without posing interference threats to authorized users in the band. We condition the grant of this waiver on the outcome of any changes to our rules that may be adopted in a future rulemaking proceeding. We intend to revisit this waiver, as well as other 60 GHz band waivers that have been granted to date, if and when the Commission might revise its rules. We further emphasize that grant of this waiver and the conditions we associate with it are not intended to predetermine the outcome of this or any potential future rulemaking. Operation pursuant to this waiver is expressly conditioned on compliance with the Commissions rules except as waived, and where rules are modified as a result of any future Commission rulemaking 25 June 28 ex parte letter. 26 2021 Waiver Order at para. 50. 27 FCC Announces Tentative Agenda for July Open Meeting, News Release, rel. June 22, 2021. Further information about the draft document, https://www.fcc.gov/document/enabling-state-art-radar-sensing-technologies-60-ghz-

band, was posted on the Commissions July Open Meeting webpage. OET opened a new docket, 21-264 to collect comments associated with this item. 4 Acconeer will be subject to those modified rules. To ensure that harmful interference to authorized operations and other spectrum users will not occur, we impose explicit conditions on the installation, operation, and certification of Acconeer's radars under this waiver, as follows:

The Acconeer pulse-coherent radar shall be certified for compliance with all the technical specifications applicable to operation under 47 CFR Part 15, with the exception of the following provisions in 47 CFR 15.255(a)(2) and (c)(3), which are waived to allow the device to operate as a radar on new passenger motor vehicles in the 57-64 GHz band at 5%

duty cycle, evaluated in 0.125 s time-averaged windows, at a 3 dBm average EIRP evaluated in 0.125 s time-averaged windows, and a pulse duration not to exceed 6 ns.28 The radar shall be restricted to factory installation in the interior of new passenger motor vehicles for the primary purpose of in-cabin monitoring functions and shall not be marketed in after-market add-on products. The grantee shall include clear and complete installation instructions that explain this restriction and a copy of these instructions shall be submitted along with the application for equipment authorization. If the radar is installed such that it is not visible (e.g., behind the headliner), then the required equipment labeling in accordance with the provisions of 47 CFR 2.925 and 15.19 shall be provided in the vehicles Owners Manual. The certification grant shall specify these restrictions. Operations under this waiver may not be used to transmit data. Users of Acconeer radars must be made aware through a disclosure in the vehicle Owners Manual or an equivalent means that that operation is subject to the conditions that no harmful interference is caused and that any interference must be accepted. This waiver and its conditions shall apply only to Acconeer radars intended for installation in passenger motor vehicles as described herein and are not to be considered to apply generally to any other radars or field disturbance sensors that will operate in different environments where further analysis would be necessary to assess the potential for impact to other authorized users. The waiver conditions granted herein are not transferable to any third party via 2.933 or any other means of technology transfer. The waiver is explicitly conditioned on any changes to our rules that may be adopted in a future rulemaking proceeding in accordance with the terms of this order. Accordingly, pursuant to authority delegated in Sections 0.31 and 0.241 AND 1.3 of the Commissions rules, 47 C.F.R 0.31, 0.241, and 1.3, and Sections 4(i), 302, 303(e), and 303(r) of the Communications Act of 1934, as amended, 47 U.S.C 154(i), 302, 303(e), and 303(r), IT IS ORDERED that the Request for Waiver filed by Acconeer AB IS GRANTED, consistent with the terms of this Order, effective upon release of this Order. IT IS FURTHER ORDERED that, if no petitions for 28 A copy of this Order shall be provided with the application for certification of the device. 5 reconsideration or applications for review are timely filed in ET Docket No 21-48, the docket SHALL BE TERMINATED and CLOSED. FEDERAL COMMUNICATIONS COMMISSION Ronald T. Repasi Acting Chief, Office of Engineering and Technology 6