2A7HDARC233millimeter wave radar

Rev11/20/07 NanjingChuhangTechnologyCo.,Ltd. FederalCommunicationsCommission AuthorizationandEvaluationDivision ConfidentialityRequestregardingapplicationforcertificationofFCCID:2A7HDARC233 PursuanttoSections0.457and0.459oftheCommission’sRules,weherebyrequestconfidential treatmentofinformationaccompanyingthisapplicationasoutlinedbelow: Exhibit Type (Block Diagram, Schematics, Operational Description, Tune up procedure, BOM) Theabovematerialscontaintradesecretsandproprietaryinformationnotcustomarilyreleasedto thepublic.Thepublicdisclosureofthesematerialsmaybeharmfultotheapplicantandprovide unjustifiedbenefitstoitscompetitors. TheapplicantunderstandsthatpursuanttoSection0.457oftheRules,disclosureofthis applicationandallaccompanyingdocumentationwillnotbemadebeforethedateoftheGrant forthisapplication. PursuanttoDA04-1705June15,2004oftheCommission’spublicnotice,wealsorequestthat theinformationattachedtothisapplicationbetemporarilyconfidentialfor180daysasoutlined below File Name (Block Diagram.pdf, Schematics.pdf, Operational Description.pdf, Tune up procedure.pdf, BOM.pdf) : ExhibitTypeFileName UserManual.pdf ExternalPhotos.pdf InternalPhotos.pdf TestSetupPhotos.pdf UserManual.pdf ExternalPhotos.pdf InternalPhotos.pdf TestSetupPhotos.pdf Sincerely, Signature: printedname:JiahuiLin Date:June27,2024

FCC ID:2A7HDARC233

Report No. : EED32Q80639902Page 1 of 6 RF Exposure Evaluation Report Product:millimeter wave radar Trade mark:CHUHANG TECH Model/Type reference:ARC2.33 Serial Number:N/A Report Number:EED32Q80639902 FCC ID:2A7HDARC233 Date of Issue:Jun. 18, 2024 Test Standards: 47 CFR Part 1.1307 47 CFR Part 1.1310 KDB 447498 D04 Interim General RF Exposure Guidance v01 Test result:PASS Prepared for: Nanjing Chuhang Technology Co., Ltd. 12F, Building A, No. 9, Yunzheng Street Nanjing, China Prepared by: Centre Testing International Group Co., Ltd. Hongwei Industrial Zone, Bao’an 70 District, Shenzhen, Guangdong, China TEL: +86-755-3368 3668 FAX: +86-755-3368 3385 Compiled by:Reviewed by: Frazer LiTom Chen Approved by:Date:Jun. 18, 2024 Aaron Ma Check No.:8614150524 Report No. : EED32Q80639902Page 2 of 6 Contents Page CONTENTS............................................................................................................................................................................2 1 GENERAL INFORMATION..............................................................................................................................................3 1.1 C LIENTINFORMATION................................................................................................................................................... 3 1.2 GENERALDESCRIPTION OFEUT...................................................................................................................................3 1.3 T EST LOCATION.............................................................................................................................................................4 1.4 D EVIATION FROMSTANDARDS......................................................................................................................................4 1.5 A BNORMALITIES FROMSTANDARDCONDITIONS..........................................................................................................4 1.6 O THERINFORMATIONREQUESTED BY THECUSTOMER................................................................................................4 2 SAR EVALUATION...........................................................................................................................................................5 2.1 RF EXPOSURECOMPLIANCEREQUIREMENT.................................................................................................................5 2.1.1 Limits....................................................................................................................................................................5 2.1.2 T estMode............................................................................................................................................................5 2.1.3 EUT RF Exposure Evaluation..........................................................................................................................6 Report No. : EED32Q80639902Page 3 of 6 1 General Information 1.1 Client Information Applicant: Nanjing Chuhang Technology Co., Ltd. Address of Applicant: 12F, Building A, No. 9, Yunzheng Street Nanjing, China Manufacturer: Nanjing Chuhang Technology Co., Ltd. Address of Manufacturer: 12F, Building A, No. 9, Yunzheng Street Nanjing, China Factory: Anqing Chuhang Electronic Technology Co., Ltd. Address of Factory: Building 1, New Energy Vehicle Industrial Park, Economic and Technological Development Zone, Anqing, 246000 Anhui, P.R. China 1.2 General Description of EUT Product Name: millimeter wave radar Model No.:ARC2.33 Trade mark: CHUHANG TECH Product Type: MobilePortableFix Location Type of Modulation: FMCW Operating Frequency77.80GHz Test Power Grade:Default Test Software of EUT:ChuHangDV1.4.10.exe Antenna Type:PCB Antenna Antenna Gain:11.90dBi Power Supply: DC 9.0V to DC 32.0V Test Voltage: DC 24V Sample Received Date:Jun. 04, 2024 Sample tested Date:Jun. 05, 2024 to Jun. 06, 2024 Remark: Company Name and Address shown on Report, the sample(s) and sample Information was/ were provided by the applicant who should be responsible for the authenticity which CTI hasn’t verified. Report No. : EED32Q80639902Page 4 of 6 1.3 Test Location All tests were performed at: Centre Testing International Group Co., Ltd Building C, Hongwei Industrial Park Block 70, Bao'an District, Shenzhen, China Telephone: +86 (0) 755 33683668 Fax:+86 (0) 755 33683385 No tests were sub-contracted. FCC Designation No.: CN1164 1.4 Deviation from Standards None. 1.5 Abnormalities from Standard Conditions None. 1.6 Other Information Requested by the Customer None. Report No. : EED32Q80639902Page 5 of 6 2 SAR Evaluation 2.1 RF Exposure Compliance Requirement 2.1.1Limits According to KDB 447498 D04 Interim General RF Exposure Guidance v01,for all devices,MPE limits in § 1.1310(e)(1) - Table1.The SAR-based exemption formula of § 1.1310(e)(1),Table 1 to § 1.1310(e)(1) sets forth limits for Maximum Permissible Exposure (MPE) to radiofrequency electromagnetic fields. Table 1 to § 1.1310(e)(1)—Limits for Maximum Permissible Exposure (MPE) f = frequency in MHz. * = Plane-wave equivalent power density. Friis Formula, Friis transmission formula: Pd = (Pout*G)/(4*pi*r 2 ); Where, Pd = power density in mW/cm 2 ; Pout = output power to antenna in mW; G = gain of antenna in linear scale Pi = 3.1416; R = distance between observation point and center of the radiator in cm . General population/uncontrolled exposure limits apply in situations in which the general public may be exposed, or in which persons who are exposed as a consequence of their employment may not be fully aware of the potential for exposure or cannot exercise control over their exposure. For example, RF sources intended for consumer use shall be subject to the limits for general population/ uncontrolled exposure in this section. 2.1.2TestMode TX mode_Make EUT continuously emit radar signals. Report No. : EED32Q80639902Page 6 of 6 2.1.3EUT RF Exposure Evaluation For Stand a…

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1.天线特性 Antenna characteristics 1.1 雷达天线布局 Radar antennas layout 1.2 天线仿真结果 Antenna simulation(77~79GHz) 天线 A ntenna 仿真增益(dBi) Simulation gain 尺寸Dimension TX1 11.5 9.0201mm*19.5334mm TX2 11.38 9.0201mm*19.5334mm TX3 11.9 9.0201mm*19.5334mm RX1 12.96 3.46mm*17.404mm RX2 12.16 3.46mm*17.404mm RX3 12.35 3.46mm*17.404mm RX4 12.05 3.46mm*17.404mm 1.3 天线方向图 Antenna pattern TX1 TX2 TX3 RX1 RX2 RX3 RX4 1.3.1 TX天线2D/3D方向图 TX 2D/3D antenna patterns 1. TX1/TX2/TX3天线最大辐射方向与雷达PCB板的法线夹角为50° 左右。The angle between TX1/TX2/TX3 beam peak direction and the normal line of the radar PCB is 50°. 参考示意图如下: Illustration is as follows: 2. TX1天线方位面方向图 TX1 azimuthal pattern TX1天线俯仰面方向图 TX1 elevational pattern 主波束方向 Main beam direction: TX2天线方位面方向图 TX2 azimuthal pattern TX2天线俯仰面方向图 TX2 elevational pattern TX3天线方位面方向图 TX3 azimuthal pattern TX3天线俯仰面方向图 TX3 elevational pattern 1 .3.2 RX天线2D/3D方向图 RX 2D/3D patterns 1. RX1/R X2/RX3/RX4天线最大辐射方向与雷达PCB板的法线夹角为 30°左右。The angle between RX1/RX2/RX3/RX4 beam peak direction and the normal line of the radar PCB is 30°. 参考示意图如下: Illustration is as follows: 主波束方向 Main beam direction 2. RX1天线方位面方向图 RX1 azimuthal pattern RX1天线俯仰面方向图 RX1 elevational pattern RX2天线方位面方向图 RX2 azimuthal pattern RX2天线俯仰面方向图 RX2 elevational pattern RX3天线方位面方向图 RX3 azimuthal pattern RX3天线俯仰面方向图 RX3 elevational pattern RX4天线方位面方向图 RX4天线俯仰面方向图 RX4 azimuthal pattern RX4 elevational pattern 天线制造商：汕头超声印制板公司 Antenna manufacturer: China Circuit Technology (Shantou) Corporation 供应商地址：广东省汕头市龙湖区万吉工业区 Address: Wanji Industrial Area, Longhu District, Shantou, Guangdong Province, China.

Report No. :EED32Q80639901Page 1 of 60 TEST REPORT Product:millimeter wave radar Trade mark:CHUHANG TECH Model/Type reference:ARC2.33 Serial Number:N/A Report Number:EED32Q80639901 FCC ID:2A7HDARC233 Date of Issue:Jun. 18, 2024 Test Standards:47 CFR Part 2 47 CFR Part 95 Subpart M Test result:PASS Prepared for: Nanjing Chuhang Technology Co., Ltd. 12F, Building A, No. 9, Yunzheng Street Nanjing, China Prepared by: Centre Testing International Group Co., Ltd. Hongwei Industrial Zone, Bao’an 70 District, Shenzhen, Guangdong, China TEL: +86-755-3368 3668 FAX: +86-755-3368 3385 Compiled by:Reviewed by: Frazer LiTom Chen Approved by:Date:Jun. 18, 2024 Aaron Ma Check No.:8614150524 Report No. :EED32Q80639901Page 2 of 60 1 Content 1 CONTENT............................................................................................................................................................................2 2 TEST SUMMARY............................................................................................................................................................... 3 3 GENERAL INFORMATION...............................................................................................................................................4 3.1 CLIENTINFORMATION....................................................................................................................................................4 3.2 GENERALDESCRIPTION OFEUT .................................................................................................................................4 3.3 T EST ENVIRONMENT.....................................................................................................................................................5 3.4 DESCRIPTION OFSUPPORTUNITS...............................................................................................................................5 3.5 T EST LOCATION.............................................................................................................................................................5 3.6 MEASUREMENTUNCERTAINTY(95%CONFIDENCE LEVELS, K=2) .............................................................................6 4 EQUIPMENT LIST..............................................................................................................................................................7 5 TEST RESULTS AND MEASUREMENT DATA...........................................................................................................9 5.1 MODULATION CHARACTERISTICS..................................................................................................................................9 5.2 99% OCCUPIED BANDWIDTH......................................................................................................................................11 5.3 EIRP(EFFECTIVEISOTROPICRADIATEDPOWER).....................................................................................................13 5.4 UNWANTED EMISSIONS...............................................................................................................................................17 5.5 F REQUENCY STABILITY................................................................................................................................................34 6 PHOTOGRAPHS OF TEST SETUP..............................................................................................................................36 7 PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS..................................................................................... 40 Report No. :EED32Q80639901Page 3 of 60 2 Test Summary Test ItemTest RequirementResult EIRP (Effective Isotropic Radiated Power) 47 CFR Part 95, Subpart M Section 95.3367 47 CFR Part 2, Subpart J Section 2.1046 PASS Modulation characteristics47 CFR Part 2, Subpart J Section 2.1047PASS 99% Occupied bandwidth47 CFR Part 2, Subpart J Section 2.1049PASS Unwanted emissions 47 CFR Part 95, Subpart M Section 95.3379 (a) 47 CFR Part 2, Subpart J Section 2.1053 PASS Frequency stability 47 CFR Part 95, Subpart M Section 95.3379 (b) 47 CFR Part 2, Subpart J Section 2.1055 PASS Remark: Company Name and Address shown on Report, the sample(s) and sample Information were provided by the applicant who should be responsible for the authenticity which CTI hasn’t verified. Report No. :EED32Q80639901Page 4 of 60 3 General Information 3.1 Client Information Applicant:Nanjing Chuhang Technology Co., Ltd. Address of Applicant:12F, Building A, No. 9, Yunzheng Street Nanjing, China Manufacturer:Nanjing Chuhang Technology Co., Ltd. Address of Manufacturer:12F, Building A, No. 9, Yunzheng Street Nanjing, China Factory:Anqing Chuhang Electronic Technology Co., Ltd. Address of Factory:Building 1, New Energy Vehicle Industrial Park, Economic and Technological Development Zone, Anqing, 246000 Anhui, P.R. China 3.2 General Description of EUT Product Name: millimeter wave radar Model No.:ARC2.33 Trade mark: CHUHANG TECH Product Type: MobilePortableFix Location Type of Modulation: FMCW(Frequency Modulated Continuous Wave) Operating Frequency77.80GHz Test Power Grade:Default Test Software of EUT:ChuHangDV1.4.10.exe Antenna Type:PCB Antenna Antenna Gain:11.90dBi Power Supply: DC 9.0V to DC 32.0V Test Voltage: DC 24V Sample Received Date:Jun. 04, 2024 Sample tested Date:Jun. 05, 2024 to Jun. 06, 2024 Report No. :EED32Q80639901Page 5 of 60 3.3 Test Environment Operating Environment: Temperature: 22~25.0  C Humidity:50~55 % RH Atmospheric Pressure:1010mbar 3.4 Description of Support Units The EUT has been tested with associated equipment below. 1）support equipment DescriptionManufacturerModel No.Certification Supplied by NetbookHP14-ce0061TXFCC&CECTI 3.5 Test Location All tests were performed at: Centre Testing International Group Co., Ltd Building C, Hongwei Industrial Park Block 70, Bao'an District, Shenzhen, China Telephone: +86 (0) 755 33683668 …

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