FCC ID: A3LWCT750M Wi-Fi/BT Transceiver

Operation Description of WCT750M WCT750Mis a Wi-Fi / Bluetooth Combo module compliant with IEEE802.11 a/b/g/n/ac/ax,MAC/baseband/radio and Bluetooth 5.0 optimized for low-power applications. Thecore chipset is from MediaTek part number MT7668AUN and MT7915DUN.. 1. Introduction 2. Hardware Architecture:

2.1 Main Chipset Information Item IEEE802.11a/b/g/n/acmac/baseband/radio Bluetooth 5.0 IEEE802.11 a/b/g/n/ac/axmac/baseband/radio Vendor MediaTek Part Number MT7668AUN MediaTek MT7915DUN/MT7975N Version 1.0 XuGuang Tech page 1 of 10 3. Operational Description WCT750Mis the 802.11a/b/g/n /ac/ax +Bluetooth 5.0 ComboModule that acts as a communication controller for users of a wirelessdevice to connect to SMART TV 3.1 Wi-Fi MAC Features Support all date rates of 802.11a/g including 6, 9, 12, 18, 24, 36, 48, and 54Mbps Support short GI and all data rates of 802.11n including MCS0 to MCS7 Support 802.11ac MCS0 to MCS9 Support 802.11ax MCS0 to MCS11 AMPDU/AMSDU RX (de-aggregation) and TX (aggregation) support TX beamformer and RX beamformee TX rate adaptation TX power control Management/control frame filtering Low power beacon filtering Supports BT/Wi-Fi coexistence. Adaptive frequency hopping (AFH) for reducing radio frequency interference 3.2Wi-Fi Baseband Features Wi-Fi baseband supports the following features:

20/40/80 MHz channels HE MCS0-11 BW20/40/80MHz with Nss=1~2 Short Guard Inerval Space-time block code(STBC) Low Density parity check(LDPC) Support digital pre-distortion to enhance PA performance Smoothing extension to MIMO case Support CDD MIMO tech Version 1.0 XuGuang Tech page 2 of 10 3.3Bluetooth Features WCT750M Bluetooth supports the following features:

BLE 2Mbps BLE Long Range BLE Advertising Extension BLE high duty cycle non-connectable ADV Compatible Bluetooth 4.2 Data length extension LE security connection Single-ended, RF port with integrated Balun and T/R switch Baseband and radio BDR and EDR packet type:1Mbps, 2Mbps, 3Mbos Fully functional Bluetooth baseband AFH, FEC,CRC Standard pairing, authentication, link key, and encryption operation Standard power saving mechanism: sniff mode and sniff subrating Integrated high efficiency PA and TSSI Interlaced scan for faster connection setup Up to 7 simultaneous active ACL connections with background inquiry and page scan Up to 16 BLE links Scatternet support Channel quality driven data rate control WB RSSI support. Monitor environment air condition to select good channel for AFH.

- Time base of the RF frequency For IF and RF frequency, 40MHzcrystal is a clock reference.

- Synthesizer Synthesizer inside Transceiver. Internal voltage controlled oscillator (VCO) provides the desired LO signal base on the phase-locked loop (PLL) with a relatively wide tuning range for this application. Internal fractional nPLL allows support for a wide range of reference clock frequencies

- Wi-FiTransmission Baseband data is modulated and upconverted to the 2.4GHz ISM and 5-GHz U-NII bands,respectively. Linear on chip power amplifier are included, which are capable of delivering high output powers while Meeting IEEE802.11ac/ax and IEEE802.a/b/g/n specifications without the need for external PAs.When using the internal PAs, closed-loop output power control is completely integrated.Base-band Processing

(BBP) IC has DSSS (BPSK/QPSK/CCK) and OFDM(BPSK/QPSK/16QAM/64QAM/25QAM) modulation function, it provides transmission data rate are 1, 2, 5.5, 11Mbps on DSSS and 6, 12, 18, 24, 36, 48, 54 Mbps on OFDM. Digital data signal will be converted toanalog (TX IQ) signals through DAC in BBP IC, TX IQ pass through to low pass filter. TX I/Q signaluse direct conversion (zero-IF) architecture converter to generate carrier frequency signal. Transceiver IC and internal PA magnify output power. Version 1.0 XuGuang Tech page 3 of 10

- Wi-FiReceiver The WCT750M has a wide dynamic range, direct conversion receiver that employs high-order on-chip channel filtering to ensure reliable operation in the noisy 2.4GHz ISM band or the entire 5GHz U-NII band

.Control signals are available that can support the use of optional LNAs for each band,which can increase the receive sensitivity by several decibels.Reverse direction isolation of LNA inside Transceiver IC suppresses unwanted radiation. Then RFsignal will bedirectly down to IF signal (RX IQ) and high frequency spurious emissions are suppressed by LPF. Atlast RX IQ signal will be demodulated digital data.

-Bluetooth Low Energy The WCT750M support the Bluetooth 4.2 LE and 5.0 BLE 2Mbps

- Link Control Layer The link control layer is part of the Bluetooth link control functions that are implemented in dedicated logic in the link control unit(LCU). Each task performs a different state in the Bluetooth Link Controller.

- Wideband speech The WCT750M provides supports for wideband speech(WBS) using on-chip SmartAudio technology. The WCT750M can perform modified Sub Band Codec(mSBC) encoding and decoding of linear 16bitsat 16kHz(256kbps rate) transferred over USB interface.

- Adaptive Frequency Hopping The WCT750M gathers link quality statistics on a channel by basis to facilitate channel assessment and Channel map selection. The link quality is determined using both RF and baseband signal processing to Provide a more accurate frequency-hop map. DSSS:CCK,BPSK,QPSK for 802.11b OFDM:BPSK,QPSK,16QAM,64QAM,256QAM for 802.11a,g,n,ac OFDMA:BPSK,QPSK,16QAM,64QAM,256QAM/1024QAM for 802.11ax FHSS:GFSK,OQPSK, 8DPSK, /4DPSK for Bluetooth 4. Product Details

-Data Modulation

-Frequency Range 2400-2483.5MHz 5150-5350MHz 5470-5725MHz 5725-5825MHz Version 1.0 XuGuang Tech page 4 of 10

- IEEE 802.11nHT20

- IEEE 802.11nHT40 Version 1.0 XuGuang Tech page 5 of 10

-IEEE 802.11ac MCS Modulation & Rage 20MHz 1x SS 20MHz 2x SS 40MHz 1x SS 40MHz 2x SS 80MHz 1x SS 80MHz 2x SS 0 1 2 3 4 5 6 7 8 9 BPSK 1/2 QPSK 1/2 QPSK 3/4 16-QAM 1/2 16-QAM 3/4 64-QAM 2/3 64-QAM 3/4 64 QAM 5/6 256 QAM 3/4 256-QAM 5/6 7.2 14.4 21.7 28.9 43.3 57.8 65.0 72.2 86.7

14.4 28.9 43.3 57.8 86.7 115.6 130.0 144.4 173.3

15.0 30.0 45.0 60.0 90.0 120.0 135.0 150.0 180.0 200.0 30.0 60.0 90.0 120.0 180.0 240.0 270.0 300.0 360.0 400.0 32.5 65.0 97.5 130.0 195.0 260.0 292.5 325.0 390.0 433.3 65.0 130.0 195.0 260.0 390.0 520.0 585.0 650.0 780.0 866.7 802.11ax channel puncturing is not implemented.

-Output Power tolerance Output power - 2.5dBm/+0.4dBm Version 1.0 XuGuang Tech page 6 of 10

-Recommended Operating conditions Operatingvoltage Operatingtemperature(ambient) Min 4.5

-20 Typ. Max Unit 5 25 5.5 50 V C Company Name:Samsung electronics CO.,LTD.

-AS Information Fax:+82-10-2965-6788 Tel:+82-10-2965-6788 Add:129 Samsung-ro, Yeongtong-guSuwon-Si Gyeonggi-do 16677 Korea (Republic Of)

-Certification Information 1) Name(Model name): Wi-Fi/BT Transceiver 2) Certification ID: FCC ID: A3LWCT750M, IC: 649E-WCT750M 3) CompanyName: Samsung Electronics Co., Ltd. 4) Production date 5) Vendor:

-Antenna Information:

Chipset Manufacture Antenna Part Number Max Gain (Peak) Antenna Type MT7668AUN INPAQ Pattern WA-P-LALBLB-12-001(WiFi 2) WA-P-LALBLB-12-001(WiFi 1) Min Gain

(Peak) 2.4GHz: -3.06dBi DFS Band:

5GHz: 2.22dBi

-6.35dBi 2.4GHz: -9.74dBi DFS Band:

5GHz: 0.79dBi

-8.29dBi WA-P-LALBLB-12-001 (BT)

-3.57dBi

Chipset Manufacture Antenna Part Number Max Gain (Peak) Min Gain

(Peak) MT7915DUN INPAQ Pattern WA-P-LBLB-04-075 (WiFi 3) WA-P-LBLB-04-075(WiFi 4) 2.4GHz: -2.86dBi 5GHz: -0.06dBi DFS Band:

-4.57dBi 2.4GHz: -7.48dBi 5GHz: -3.44dBi DFS Band:

-8.03dBi Antenna Type Version 1.0 XuGuang Tech page 7 of 10

-Pin Assignment Version 1.0 XuGuang Tech page 8 of 10 FCC Statement Federal Communication Commission Interference Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of the following measures:

Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the users authority to operate this equipment. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Manufacturers integrating the Radio Module into other devices should note the following:

The device is compliant with part 15.247 and 15.407 of Title 47 of the FCC rules. If the Link Module is integrated into a new host product, the final host product still requires Part 15 Subpart B compliance testing with the modular transmitter installed. Version 1.0 XuGuang Tech page 9 of 10 IC Statement This Class B digital apparatus complies with Canadian ICES-003. 5150-5250MHz is limited to use indoor only This device complies with Industry Canada license-exempt RSS standard(s). 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. Cetappareilestconforme aux normes RSS exempts de licenced'Industrie Canada. Son fonctionnementestsoumis aux deux conditions suivantes: (1) cetappareil ne doit pas causer dinterfrences et

(2) cetappareildoit accepter touteinterfrence, y compris les interfrencespouvantprovoquer un fonctionnementindsirable de lappareil. Cetappareilnumrique de la classe B estconforme la norme NMB-003 du Canada.

-Label and Compliance Information The final end product must be labeled in a visible area with the following: Contains FCC ID:

A3LWCT750M, contains IC: 649E-WCT750M. The grantee's FCC ID can be used only when all FCC/ IC compliance requirements are met.

-RF exposure The module willinstall into mobile device such as TV. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator

-Information on test modes and additional testing requirements Output power check, EVM(Error Vector Magnitude) check, center frequency check, PER check,

& your body. external inspection Version 1.0 XuGuang Tech page 10 of 10

THIS MUST BE SIGNED BY THE APPLICANT/AGENT AND SHOULD BE PLACED ON APPROPRIATE LETTERHEAD Date: December 31, 2019 Request for Modular/Limited Modular Approval Subject: Manufacturers Declaration for -Modular Approval

- Split Modular Approval

- Limited Modular Approval - Limited Split Modular Approval Confidentiality Request for: ______A3LWCT750M______ For Items Marked NO(*), the Limited Module Description Must be Filled Out on the Following Pages 1. The modular transmitter must have its own RF shielding. This is intended to ensure that the module Modular Approval Requirement Requirement Met 8 Basic Requirements FCC Part 15.212(a)(1) does not have to rely upon the shielding provided by the device into which it is installed in order for all modular transmitter emissions to comply with FCC limits. It is also intended to prevent coupling between the RF circuitry of the module and any wires or circuits in the device into which the module is installed. Such coupling may result in non-compliant operation. The physical crystal and tuning capacitors may be located external to the shielded radio elements. 15.212(a)(1)(i) Details: The module contains a metal shield which covers all RF components and circuitry. The shield is located on the top of the board next to antenna connector

- YES - NO(*) 2. The modular transmitter must have buffered modulation/data inputs (if such inputs are provided) to ensure that the module will comply with FCC requirements under conditions of excessive data rates or over-modulation. 15.212(a)(1)(ii) Details: the main chip include it. 3. The modular transmitter must have its own power supply regulation on the module. This is intended to

- YES - NO(*) ensure that the module will comply with FCC requirements regardless of the design of the power supplying circuitry in the device into which the module is installed. 15.212(a)(1)(iii) Details: The module contains its own power supply regulation. Please refer to schematic filed with this application>

- YES - NO(*) 4. The modular transmitter must comply with the antenna and transmission system requirements of 15.203, 15.204(b), 15.204(c), 15.212(a), and 2.929(b). The antenna must either be permanently attached or employ a unique antenna coupler (at all connections between the module and the antenna, including the cable). The professional installation provision of 15.203 is not applicable to modules but can apply to limited modular approvals under paragraph 15.212(b). 15.212(a)(1)(iv) Details: The module connects to its antenna using an UFL connector which is considered a non-standard connector. A list of antennas tested and approved with this device may be found in users manual provided with the application

- YES - NO(*) 5. The modular transmitter must be tested in a stand-alone configuration, i.e., the module must not be inside another device during testing. This is intended to demonstrate that the module is capable of complying with Part 15 emission limits regardless of the device into which it is eventually installed. Unless the transmitter module will be battery powered, it must comply with the AC line conducted requirements found in Section 15.207. AC or DC power lines and data input/output lines connected to the module must not contain ferrites, unless they will be marketed with the module (see Section 15.27(a)). The length of these lines shall be length typical of actual use or, if that length is unknown, at least 10 centimeters to insure that there is no coupling between the case of the module and supporting equipment. Any accessories, peripherals, or support equipment connected to the module during testing shall be unmodified or commercially available (see Section 15.31(i)). 15.212(a)(1)(v) Details: The module was tested stand-alone as shown in test setup photographs filed with this application

- YES - NO(*) Modular Approval Requirement Requirement Met 053019-02a THIS MUST BE SIGNED BY THE APPLICANT/AGENT AND SHOULD BE PLACED ON APPROPRIATE LETTERHEAD 6. The modular transmitter must be labeled with its own FCC ID number, or use an electron display (see KDB Publication 784748). If using a permanently affixed label with its own FCC ID number, if the FCC ID is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following: Contains Transmitter Module FCC ID: XYZMODEL1 or Contains FCC ID:

XYZMODEL1. Any similar wording that expresses the same meaning may be used. The Grantee may either provide such a label, an example of which must be included in the application for equipment authorization, or, must provide adequate instructions along with the module which explain this requirement. In the latter case, a copy of these instructions must be included in the application for equipment authorization. If the modular transmitter uses an electronic display of the FCC identification number, the information must be readily accessible and visible on the modular transmitter or on the device in which it is installed. If the module is installed inside another device, then the outside of the device into which the module is installed must display a label referring to the enclosed module. This exterior label can use wording such as the following: Contains FCC certified transmitter module(s). Any similar wording that expresses the same meaning may be used. The user manual must include instructions on how to access the electronic display. A copy of these instructions must be included in the application for equipment authorization. 15.212(a)(1)(vi) Details: There is a label on the module as shown in the labeling exhibit filed with this application. Host specific labeling instructions are shown in the installation manual .filed with this application.

- YES - NO(*) 7. The modular transmitter must comply with all specific rule or operating requirements applicable to the transmitter, including all the conditions provided in the integration instructions by the grantee. A copy of these instructions must be included in the application for equipment authorization. For example, there are very strict operational and timing requirements that must be met before a transmitter is authorized for operation under Section 15.231. For instance, data transmission is prohibited, except for operation under Section 15.231(e), in which case there are separate field strength level and timing requirements. Compliance with these requirements must be assured. 15.212(a)(1)(vii) Details: The module complies with FCC Part 15C and Part 15E requirements. Instructions to the OEM installer are provided in the installation manual filed with this application.

- YES - NO(*) 8. The modular transmitter must comply with any applicable RF exposure requirements. For example, FCC Rules in Sections 2.1091, 2.1093 and specific Sections of Part 15, including 15.319(i), 15.407(f), 15.253(f) and 15.255(g), require that Unlicensed PCS, UNII and millimeter wave devices perform routine environmental evaluation for RF Exposure to demonstrate compliance. In addition, spread spectrum transmitters operating under Section 15.247 are required to address RF Exposure compliance in accordance with Section 15.247(b)(4). Modular transmitters approved under other Sections of Part 15, when necessary, may also need to address certain RF Exposure concerns, typically by providing specific installation and operating instructions for users, installers and other interested parties to ensure compliance. 15.212(a)(1)(viii) Details: The module use more than 20cm distance.

- YES - NO(*) 053019-02a THIS MUST BE SIGNED BY THE APPLICANT/AGENT AND SHOULD BE PLACED ON APPROPRIATE LETTERHEAD Limited Module Description When Applicable

* If a module does NOT meet one or more of the above 8 requirements, the applicant may request Limited Modular Approval (LMA). This Limited Modular Approval (LMA) is applied with the understanding that the applicant will demonstrate and will retain control over the final installation of the device, such that compliance of the end product is always assured. The operating condition(s) for the LMA;

the module is only approved for use when installed in devices produced by grantee. A description regarding how control of the end product, into which the module will be installed, will be maintained by the applicant/manufacturer, such that full compliance of the end product is always ensured should be provided here. Details: N/A Software Considerations KDB 594280 / KDB 442812 (One of the following 2 items must be applied) 1. For non-Software Defined Radio transmitter modules where software is used to ensure Requirement Requirement Met compliance of the device, technical description must be provided about how such control is implemented to ensure prevention of third-party modification; see KDB Publication 594280. Details: Please refer to Operational Description-Software Configuration Control Declaration.

- Provided in Separate Cover Letter

- N/A 2. For Software Defined Radio (SDR) devices, transmitter module applications must provide a software security description; see KDB Publication 442812.

- Provided in Separate Cover Letter

- N/A Details: N/A Split Modular Requirements 1. For split modular transmitters, specific descriptions for secure communications Requirement between front-end and control sections, including authentication and restrictions on third-party modifications; also, instructions to third-party integrators on how control is maintained. Details: N/A Provided in Manual

- Provided in Separate Cover Letter

- N/A 053019-02a THIS MUST BE SIGNED BY THE APPLICANT/AGENT AND SHOULD BE PLACED ON APPROPRIATE LETTERHEAD OEM Integration Manual Guidance KDB 996369 D03 Section 2 Clear and Specific Instructions Describing the Conditions, Limitations, and Procedures for third-parties to use and/or integrate the module into a host device. Requirement Is this module intended for sale to third parties?

- YES

- No, If No, and LMA applies, the applicant can optionally choose to not make the following detailed info public. However there still needs to be basic integration instructions for a users manual and the information below must still be included in the operational description.If the applicant wishes to keep this info confidential, this will require a separate statement cover letter explaining the module is not for sale to third parties and that integration instructions are internal confidential documents. Items required to be in the manual See KDB 996369 D03, Section 2 As of May 1, 2019, the FCC requires ALL the following information to be in the installation manual. Modular transmitter applicants should include information in their instructions for all these items indicating clearly when they are not applicable. For example information on trace antenna design could indicate Not Applicable. Also if a module is limited to only a grantees own products and not intended for sale to third parties, the user instructions may not need to be detailed and the following items can be placed in the operational description, but this should include a cover letter as cited above. 1. List of applicable FCC rules. KDB 996369 D03, Section 2.2 a. Only list rules related to the transmitter. 2. Summarize the specific operational use conditions. KDB 996369 D03, Section 2.3 a. Conditions such as limits on antennas, cable loss, reduction of power for point to point systems, professional installation info 3. Limited Module Procedures. KDB 996369 D03, Section 2.4 a. Describe alternative means that the grantee uses to verify the host meets the necessary limiting conditions b. When RF exposure evaluation is necessary, state how control will be maintained such 4. Trace antenna designs. KDB 996369 D03, Section 2.5 that compliance is ensured, such as Class II for new hosts, etc. a. Layout of trace design, parts list, antenna, connectors, isolation requirements, tests for design verification, and production test procedures for ensuring compliance. If confidential, the method used to keep confidential must be identified and information provided in the operational description. 5. RF exposure considerations. KDB 996369 D03, Section 2.6 a. Clearly and explicitly state conditions that allow host manufacturers to use the module. Two types of instructions are necessary: first to the host manufacturer to define conditions (mobile, portable xx cm from body) and second additional text needed to be provided to the end user in the host product manuals. 6. Antennas. KDB 996369 D03, Section 2.7 a. List of antennas included in the application and all applicable professional installer instructions when applicable. The antenna list shall also identify the antenna types

(monopole, PIFA, dipole, etc note that omni-directional is not considered a type) 7. Label and compliance information. KDB 996369 D03, Section 2.8 a. Advice to host integrators that they need to provide a physical or e-label stating

- All Items shown to the left are provided in the Modular Integration Guide (or UM) for Full Modular Approval (MA) or LMA.

- An LMA applies and is approved ONLY for use by the grantee in their own products, and not intended for sale to 3rd parties as provided in a separate cover letter. Therefore the information shown to the left is found in the theory of operation. Contains FCC ID: with their finished product 8. Information on test modes and additional testing requirements. KDB 996369 D03, Section 2.9 a. Test modes that should be taken into consideration by host integrators including clarifications necessary for stand-alone and simultaneous configurations. b. Provide information on how to configure test modes for evaluation 9. Additional testing, Part 15 Subpart B disclaimer. KDB 996369 D03, Section 2.10 Sincerely, By:

(Signature/Manger1) _______Ben Cheng_______________

(Print name) 1 - Must be signed by applicant contact given for applicant on the FCC site, or by the authorized agent if an appropriate uthorized agent letter has been provided. Letters should be placed on appropriate letterhead. 053019-02a

Federal Communications Commission Authorization and Evaluation Division Date: Nov.15, 2019 ATTESTATION FCC ID: A3LWCT750M Product descriotion: Wi-Fi/BT Transceiver We,Samsung Electronics Co Ltd hereby declare that the [Wi-Fi/BT Transceiver, WCT750M] for being in compliance with KDB 594280 and KDB 848637 is disabled following bands/ functions by software 1. Ad-hoc and Wi-Fi Direct are disabled. 2. When the client in non-associated mode,This device is client software and associated drivers will not initate any transmissionon DFS frequencies without initiation by a master.without DFS detection function capability. This includes transmissions for beacon ad-hoc peer-to-peer modes. 3. The product is not able to operate in non-US/IC frequencies, and without country code selection function. Best regards _______________________________________ JenniChun Genernal Manager Samsung Electronics Co Ltd