2ATDT-V18DASH CAM

Up key, short press the front and interior camera screen switching function, the menu interface is up selection, and playback is fast forward Down arrow key, short press to turn on/off microphone, menu interface for downward selection, fast rewind for playback If the recorder crashes or operates abnormally due to unexpected reasons, press the reset buttonbriefly toenter the POWER OFF state, and thenpress andhold the button torestart themachine FCC Warning Statement Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. NoteThis equipment has bee n 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 instruction, 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 or more 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. 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. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction FCCWarningStatement:Changesormodificationstothisunitnotexpressly approvedbythepartyresponsibleforcompliancecouldvoidtheuser’s authoritytooperatetheequipment.Thisequipmenthasbeentestedandfound tocomplywiththelimitsforaClassBdigitaldevice,pursuanttoPart15ofthe FCCRules.Theselimitsaredesignedtoprovidereasonableprotectionagainst harmfulinterferenceinaresidentialinstallation.Thisequipmentgenerates, usesandcanradiateradiofrequencyenergyand,ifnotinstalledandusedin accordancewiththeinstructions,maycauseharmfulinterferencetoradio communications. However,thereisnoguaranteethatinterferencewillnotoccurinaparticular installation.Ifthisequipmentdoescauseharmfulinterferencetoradioor televisionreception,whichcanbedeterminedbyturningtheequipmentoffand on,theuserisencouragedtotrytocorrecttheinterferencebyoneormoreof thefollowingmeasures: -Reorientorrelocatethereceivingantenna. -Increasetheseparationbetweentheequipmentandreceiver. - Connecttheequipmentintoanoutletonacircuitdifferentfromthatto whichthereceiverisconnected. - Consultthedealeroranexperiencedradio/TVtechnicianforhelp. ThisdevicecomplieswithPart15oftheFCCRules.Operationissubjecttothe followingtwoconditions:(1)thisdevicemaynotcauseharmfulinterference, and(2)thisdevicemustacceptanyinterferencereceived,including interferencethatmaycauseundesiredoperation. FCCRadiationExposureStatement ThedevicehasbeenevaluatedtomeetgeneralRFexposurerequirement.The devicecanbeusedinportableexposureconditionwithoutrestriction.

1/1 USAgentforServiceofProcessLETTEROFATTESTATION TO: OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USAgentforServiceofProcess: CompanyName:GOLDENVICTORYINTERNATIONALTRADINGCOLTD FRN:0036377570 ContactName:LeonHowar Address:11016THSTREETSUITE1400DENVER,CO80202UnitedStates TelephoneNo:(337)255-0461 Email:[email protected] Applicant: Companyname:ShenzhenHengxinWeiyeDigitalCo.,LTD. ProductDescription:DASHCAM Granteecode:2ATDT FRN:0028490589 FCCID:2ATDT-V18 ContactName:ZilongHu Address:6/F,BBuilding,YongqiIndustrial,YintianXifaRoad,BaoanDistrict,ShenzhenChina TelephoneNo.:0755-27951117 Email:[email protected] [ShenzhenHengxinWeiyeDigitalCo.,LTD.]certifiesthat,asofthedateofthis filingoftheapplicationwiththeTCB,[GOLDENVICTORYINTERNATIONAL TRADINGCOLTD]isourdesignatedUSagentforserviceofprocessforthe abovereferencedFCCID.[ShenzhenHengxinWeiyeDigitalCo.,LTD.]accepts tomaintainanagentfornolessthanoneyearafterthegranteehasterminated allmarketingandimportationortheconclusionofanycommissionrelated proceedinginvolvingequipment.[GOLDENVICTORYINTERNATIONAL TRADINGCOLTD]accepts,asofthedateofthefilingoftheapplication,the obligationofthedesignatedUSagentforserviceofprocessfortheabove referenceFCCID. TheUSAgentforServiceofProcessisawareofandagreestocomplywiththerequirements outlinedintheFCCEquipmentAuthorizationProgram,ReportandOrderFCC22-84,andclause §2.911. TheApplicantisawareofandagreestocomplywiththerequirementsoutlinedintheFCC EquipmentAuthorizationProgram,ReportandOrderFCC22-84,andclause§2.911. Date:2026.4.27 Applicant’sName:ZilongHuUSAgent’sName:LeonHowar Title:ManagerTitle:Manager Signature Signature

AttestationStatement. OldCode:C526609124NewCode:00015544Ed.3 Changereason:FRNisaddedtotheApplicantinformationsection. 1/1 TO: OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 TheCommissionadoptedrulesthatprohibitequipmentauthorizationfor“covered” telecommunicationsequipmentandvideosurveillanceequipmentproducedbyentitiesidentified ontheCommission’sCoveredList 1 ,whichisperiodicallyupdated.SeetheCoveredListformore details.ThisAttestationStatementistoconfirmthatwefollowtheSection2.911(d)(5)(i)-(ii) Applicant Companyname:ShenzhenHengxinWeiyeDigitalCo.,LTD. Granteecode:2ATDT FRN:0028490589 FCCID:2ATDT-V18 ContactName:ZilongHu Address:6/F,BBuilding,YongqiIndustrial,YintianXifaRoad,BaoanDistrict,ShenzhenChina TelephoneNo.:0755-27951117 Email:[email protected] i.ShenzhenHengxinWeiyeDigitalCo.,LTD.(“theapplicant”)certifiesthatthe equipmentforwhichauthorizationissoughtisnot“covered”equipment prohibitedfromreceivinganequipmentauthorizationpursuanttosection 2.903oftheFCCrules.Theapplicantmustsignthiscertification. ii.ShenzhenHengxinWeiyeDigitalCo.,LTD.“theapplicant”)certifiesthat,as ofthedateofthefilingoftheapplication,theapplicant[isnot](asa specificallynamedentityoranyofitssubsidiariesoraffiliates)identifiedon theCoveredListasanentityproducing“covered”equipment.Theapplicant mustsignthiscertification. [ShenzhenHengxinWeiyeDigitalCo.,LTD.](“theapplicant”)certifiesthat,asofthe dateofthefilingofthe application,theapplicant[isnot]identifiedontheCoveredList asanentityproducing“covered” equipment. Date:2026.4.27 Applicant’sName:ZilongHu Title:Manager Signature 1 TheCommission’sCoveredListispublishedbythePublicSafetyandHomelandSecurityBureauandpostedonthe Commission’swebsite.ThisCoveredList,whichisperiodicallyupdated,identifiesparticularequipment,producedby particularentities,thatconstitutes“covered”equipment.https://www.fcc.gov/supplychain/coveredlist

ShenzhenHengxinWeiyeDigitalCo.,LTD.1 Code00018768Ed.2 Item1.Thedeviceisabletoinstallsoftware/programinstallation? ☐ Yes,gotoItem2. ☒ No.Inthiscase,therestoftheitemsdonotapply.ThedevicecannotsupportinstallationofKaspersky cybersecurityoranti-virussoftware. Item2.TechnicalRequirementsforKasperskyCybersecuritySoftware: #GeneralRequirements(ForallDevices)Yes/NoorN/AComments 1Internetconnectionforactivationandupdates(ForallOperating Systems) N/A #GeneralRequirements(ForWindowsDevices)Yes/NoorN/AComments Device Companyname Granteecode FCCID FRN Contactname Address Telephonenumber E-mail Chipset/moduleinformation OperatingSystem(ifapplicable) StorageCapacity(harddriveorother permanentmemorystorage,ifapplicable) DASH CAM Shenzhen Hengxin Weiye Digital Co., LTD. 2ATDT 2ATDT-V18 0028490589 Zilong Hu 6/F, B Building, Yongqi Industrial, Yintian Xifa Road, Baoan District, Shenzhen China 0755-27951117 [email protected] MC U: CH03, RF:ASR5505S N/A N/A 2 1Storage:1500MBfreespaceontheharddriveN/A 2OperatingSystem: MicrosoftWindows8,8.1,10&11Home/Pro/Enterprise Microsoft Windows7Starter/HomeBasic&Premium/Professional/ UltimateSP1orhigher N/A 3Processor:1GHzorhigher(x86orx64)N/A 4Memory(RAM)1GB(32-bit)or2GB(64-bit)N/A 5ScreenResolution:Minimumresolutionof1024x768N/A #GeneralRequirements(FormacOSdevices)Yes/NoorN/AComments 1OperatingSystemmacOS®13–14N/A 2Memory(RAM)4GBN/A 3Storage:3455MBfreespaceontheharddriveN/A #GeneralRequirements(ForAndroidDevices)Yes/NoorN/AComments 1Storage:150MBfreespaceN/A 2OperatingSystem:Android™10–14N/A 3ScreenResolution:Minimumresolutionof320x480N/A #GeneralRequirements(foriOSdevices)Yes/NoorN/AComments 1Storage:150MBfreespaceN/A 2OperatingSystem:iOS®17N/A #GeneralRequirements(ForLinuxsystem)Yes/NoorN/AComments 1Harddrive:1GBoffreespaceN/A 3 2CPU:IntelPentium1GHzorhigherN/A 3RAM:1GBN/A 4Minimumsoftwarerequirements: AlmaLinuxOS8orlater; AlterOS7.5orlater; AstraLinuxCommonEdition2.12orlater; CentOS6.7orlater; DebianGNU/Linux10.0orlater; EulerOS2.0orlater; OracleLinux7.3orlater; RedHatEnterpriseLinux6.7orlater; RockyLinux8.5orlater; SUSELinuxEnterpriseServer12.5orlater; Ubuntu12.04orlater; UncomOSHome/Business/Education/Enterprise2.2orlater; ALTLinuxWorkstaton/WorkstationK/Server/Education8or later; ROSALinuxWorkstation/Server12orlater; REDOS7.3andlater; N/A Afterreviewedthetechnicalrequirements,isthedevicecapableofsupportingtheinstallationof Kasperskysoftware? ☐Yes,gotoItem3. ☒ No.Inthiscase,therestoftheitemsdonotapply.ThedevicecannotsupportinstallationofKaspersky software Item3.ConnectivityCapabilities: 4 #PhysicalInterfacePurposeJustification 1 1 #WirelessInterfacePurposeJustification 1 1 Afterthereviewofthisitems,thedevice: ☒Cannotsupportinstallationofanycybersecurityoranti-virussoftwareonthecoveredlist. ☐ Potentiallycanoperatewithanycybersecurityoranti-virussoftwareonthecoveredlist–additionalthird- partyproofisprovidedtodemonstratecompliancewithrequirementsasof2.911(d)5(i),(ii)–“Proofof CompliancewithCoveredListSoftwareRequirements”ofthisdocumentapplies Signature:Name:ZilongHu Date:2026.4.27 Oncethedocumentisfilledin,pleaseproceedtoprintaPDFofthisWord 1 Thejustificationfieldisusedtojustifywhythesoftwarecannotbereceivedthroughthatinterface.Checktheannexformore indications.

TCBCALLpágina1 PleaseuploadanexhibitthatexplainshowdoestheTCBverifythenewagentinformation File FCC ID:2ATDT-V18 : 1-IstheaddressoftheagentavalidphysicalUSmailingaddress(notaUSpostofficebox,notavirtualmailbox,notP.O.Boxes,notavacantlot,notapublicbuilding, etc.) ○Wehavecheckediftheaddressexistsinarealandpotentialbuilding(Googlemaps)+officialUSregister,afterthisverificationandtheevidencebelowwecan guaranteethefollowing: notaUSpostofficebox notavirtualmailbox notP.O.Boxes notavacantlot notapublicbuilding(note) ►WecheckedtheFCCFRNSearchbasedontheinformationprovidedbythegrantee. Ontheofficialregisterfrom: https://www.sos.state.co.us/biz/BusinessEntityDetail.do?quitButtonDestination=BusinessEntityResults&nameTyp=ENT&masterFileId=20248279136&entityId2=20248279136&fileId=20248279136&srchTyp=ENTITY TCBCALLpágina2 Google: EINNumber： TCBCALLpágina3 TCBCALLpágina4 ►CONCLUSIONbyTCB:TheASOPdefinedandprovidedbygranteeisVALIDandconfirmed.Thereforetheexhibit"C5266091_X23_Ed1_US_Agent_Letter" includedinthefileisok. 2-IstheagentphysicallylocatedatthatvalidUSaddresssuchthattheagentcanbelegallyservedatthataddress? Yes,checkabove 3-Hasthelistedagentclearlyagreedinwritingtoserveastheagentforthegranteeatthataddress? Yes,itisincludedintheexhibit"C5266091_X23_Ed1_US_Agent_Letter"

C5266091_X10_Ed.2 1/1 ShenzhenHengxinWeiyeDigitalCo.,LTD. OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 Date:2026.4.27 Subject:RequestforConfidentiality FCCID:2ATDT-V18 ToWhomItMayConcern, PursuanttotheprovisionsofSections0.457and0.459ofCommission'srules (47CFR0.457,0.459),wearerequestingtheCommissiontowithholdthefollowing attachment(s)asconfidentialdocumentfrompublicdisclosure. ExhibitsLong-Term Confidentiality Short-Term Confidentiality NOTE2 IDLabel/LocationNoNo AttestationStatementNoNo ExternalPhotosNo ☐ BlockDiagram ☒☐ Schematics ☒☐ TestReportNoNo TestSetupPhotosNo ☐ User’sManual ☐ NOTE 1 ☐ InternalPhotos ☐ NOTE 1 ☐ PartsList/TuneUp ☐☐ RFExposureInfoNoNo OperationalDescription ☒☐ CoverLetter(s)NoNo SDRSoftware/SecurityInfo ☐ No NOTE1:Long-TermConfidentialitymaybepermittedunderspecialconditions(SeeII.LONG-TERMCONFIDENTIALITY,Section3of KDB726920,uselastinforce) NOTE2:Short-TermConfidentialitycanberequestedforamaximumof180daysfromthedateofthegrant. Abovementioneddocumentcontainsdetailedsystemandequipmentdescriptionare consideredasproprietaryinformationinoperationoftheequipment.Thepublic disclosureofabovedocumentsmightbeharmfultoourcompanyandwouldgive competitoranunfairadvantageinthemarket. Incaseofshort-termConfidentiality,theapplicantrequeststheexhibitsselected abovearewithheldfrompublicviewforaperiodof______daysfromthedateofthe GrantofEquipmentAuthorizationandpriortomarketing. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondentduringcertificationreviewprocesscannotbegrantedasconfidential documentsandthoseinformationwillbeavailableforpublicreviewoncethegrantof equipmentauthorizationisissued. C5266091_X10_Ed.2 1/1 Sincerely, Signature: Name:ZilongHu Title:Manager

C5266091_X8_Ed.1 1/1 LetterofAuthorization ShenzhenHengxinWeiyeDigitalCo.,LTD. Company:ShenzhenHengxinWeiyeDigitalCo.,LTD. Address:6/F,BBuilding,YongqiIndustrial,YintianXifaRoad,Baoan District,ShenzhenChina ProductName:DASHCAM ModelNumber:V18 FCCIdentifier:2ATDT-V18 WeauthorizeLGAITechnologicalCenterS.A.,RondadelaFontdelCarme,s/n, 08193Bellaterra,Spain,toactonourbehalfonallmattersconcerningthe abovenamedequipment. AnyindividualwithinLGAITechnologicalCenterS.A.isauthorizedtoactonour behalfandtakeactionontheapplication. WedeclarethatauthorizeLGAITechnologicalCenterS.A.,RondadelaFontdel Carme,s/n,08193Bellaterra,Spain,isallowedtoforwardallinformation relatedtotheapprovalprojecttotheFederalCommunicationCommissionand todiscussanyissuesconcerningtheapprovalapplication.Anyandallacts carriedoutbyLGAITechnologicalCenterS.A.onourbehalfshallhavethe sameeffectasactsofourown. Name:ZilongHuDate:2026.4.27 Title:Manager Signatureofapplicant:

EUTPHOTO(ExternalPhotos) Model:V18 Photo1 Photo2 EUTPHOTO(ExternalPhotos) Photo3 Photo4 EUTPHOTO(ExternalPhotos) Photo5 Photo6 ※※※※※ENDOFREPORT※※※※※

Labelandlabellocation 4.5cm DASHCAM FCCID:2ATDT-V18 3.0cm

EUTPHOTO(InternalPhotos) Model:V18 Photo7 Photo8 EUTPHOTO(InternalPhotos) Photo9 Photo10 ANT EUTPHOTO(InternalPhotos) Photo11 ※※※※※ENDOFREPORT※※※※※

FCCID:2ATDT-V18 RFEXPOSUREEVALUATION AccordingtoKDB447498D01GeneralRFExposureGuidancev06andpart2.1093, UnlessspecificallyrequiredbythepublishedRFexposureKDBprocedures,standalone 1-gheadorbodyand10-gextremitySARevaluationforgeneralpopulationexposure conditions,bymeasurementornumericalsimulation,isnotrequiredwhenthe correspondingSARTestExclusionThresholdcondition(s),listedbelow,is(are)satisfied. For100MHzto6GHzandtestseparationdistances≤50mm,the1-gand10-gSARtest exclusionthresholdsaredeterminedbythefollowing: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance, mm)]*[√f (GHz) ]≤3.0for1-gSAR,and≤7.5for10-gextremitySAR,where f (GHz) istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation Theresultisroundedtoonedecimalplaceforcomparison Here, For2.4GWIFI Mode Frequency (MHz) Power (dBm) TuneUP tolerance (dBm) MaxTune UPpower (dBm) Power (mW) Min. distance(mm) Calc. thresholds limit 802.11b24123.5103±142.5150.780223.0 802.11g24373.7933±142.5150.784263.0 802.11n2024123.728 3±1 42.5150.780223.0 802.11n4024223.8393±142.5150.781843.0 Conclusion: 1.[(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparation distance,mm)]*[√f(GHz)]<3.0. 2.SARTestExclusionThresholdsis3.0forseparationdistance5mm.Therefore,SAR testisnotrequired.

ProjectNo.:ZKT-2603182798E Page 1 of 75 FCCPart15CTestReport FCCID:2ATDT-V18 ReportNumber...................................: ZKT-2603182798E DateofTest.......................................................: Mar.18,2026-Apr.08,2026 Dateofissue.........................................: Apr.08,2026 Totalnumberofpages .......................... 75 TestResult .......................................... : PASS TestingLaboratory. ........................... : ShenzhenZKTTechnologyCo.,Ltd. Address...............................................: 1/F,No.101,BuildingB,No.6,TangweiCommunityIndustrial Avenue,FuhaiStreet,Bao'anDistrict,Shenzhen,China Applicant'sname.............................: ShenzhenHengxinWeiyeDigitalCo.,LTD. Address...............................................: 6/F,BBuilding,YongqiIndustrial,YintianXifaRoad,BaoanDistrict, ShenzhenChina Manufacturer'sname......................: ShenzhenHengxinWeiyeDigitalCo.,LTD. Address...............................................: 6/F,BBuilding,YongqiIndustrial,YintianXifaRoad,BaoanDistrict, ShenzhenChina Testspecification: Standard................................................: FCCCFRTitle47Part15SubpartCSection15.247 ANSIC63.10-2020+Cor1-2023 Testprocedure.....................................: / Non-standardtestmethod................:N/A TestReportFormNo........................: TRF-EL-112_V0 TestReportForm(s)Originator.....: ZKTTesting MasterTRF ........................................ : Dated:2021-04-22 ThisdevicedescribedabovehasbeentestedbyZKT,andthetestresultsshowthattheequipmentunder test(EUT)isincompliancewiththeFCCrequirements.Anditisapplicableonlytothetestedsample identifiedinthereport. Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofZKT,thisdocumentmay bealteredorrevisedbyZKT,personalonly,andshallbenotedintherevisionofthedocument. Productname ..................................... : DASHCAM Trademark...........................................: N/A Model/Typereference.........................: V18 Ratings..................................................: Input:5V1A Battery:3.7V,150mAh,0.555Wh , ProjectNo.:ZKT-2603182798E Page 2 of 75 Testingprocedureandtestinglocation: TestingLaboratory .......................................... :ShenzhenZKTTechnologyCo.,Ltd. Address............................................................:1/F,No.101,BuildingB,No.6,TangweiCommunity IndustrialAvenue,FuhaiStreet,Bao'anDistrict, Shenzhen,China JimLiu Testedby(name+signature).......................: JacksonFang Reviewer(name+signature).......................: LakeXie Approved(name+signature) ....................... : ProjectNo.:ZKT-2603182798E Page 3 of 75 TableofContents Page 1.VERSION.....................................................................................................................5 2.SUMMARYOFTESTRESULTS..................................................................................6 2.1TESTFACILITY....................................................................................................................7 2.2MEASUREMENTUNCERTAINTY.......................................................................................7 3.GENERALINFORMATION..........................................................................................8 3.1GENERALDESCRIPTIONOFEUT....................................................................................8 3.2DESCRIPTIONOFTESTMODES......................................................................................9 3.3BLOCKDIGRAMSHOWINGTHECONFIGURATIONOFSYSTEMTESTED...............10 3.4DESCRIPTIONOFSUPPORTUNITS(CONDUCTEDMODE)........................................10 3.5EQUIPMENTSLISTFORALLTESTITEMS.....................................................................11 4.EMCEMISSIONTEST...............................................................................................13 4.1CONDUCTEDEMISSIONMEASUREMENT....................................................................13 4.1.1POWERLINECONDUCTEDEMISSIONLimits.....................................................13 4.1.2TESTPROCEDURE..................................................................................................13 4.1.3DEVIATIONFROMTESTSTANDARD.....................................................................13 4.1.4TESTSETUP.............................................................................................................14 4.1.5EUTOPERATINGCONDITIONS..............................................................................14 4.1.6TESTRESULT...........................................................................................................15 4.2.1RADIATEDEMISSIONLIMITS.................................................................................17 4.2.2TESTPROCEDURE..................................................................................................17 4.2.3DEVIATIONFROMTESTSTANDARD.....................................................................18 4.2.4TESTSETUP.............................................................................................................18 4.2.5EUTOPERATINGCONDITIONS..............................................................................19 4.2.6TESTRESULTS.........................................................................................................19 5.RADIATEDBANDEMISSIONMEASUREMENT.......................................................30 5.1TESTREQUIREMENT.......................................................................................................30 5.2TESTPROCEDURE..........................................................................................................30 5.3DEVIATIONFROMTESTSTANDARD.............................................................................30 5.4TESTSETUP......................................................................................................................31 5.5EUTOPERATINGCONDITIONS...............................................…

Text truncated - open the document above for the full version.

Application Note AN043 Small Size 2.4 GHz PCB antenna By Audun Andersen 1 KEYWORDS • CC25xx • CC24xx • CC2480 • PCB antenna • USB dongle • 2.4 GHz • Inverted F Antenna 2 INTRODUCTION The PCB antenna used on the CC2511 USB dongle reference design is described in this application note. Even if the antenna presented is for a USB dongle design it can be used in all 2.4 GHz designs, especially where small space is required for the antenna. This application note describes the antenna dimensions, the RF performance and considerations for complying with regulatory limits when using this design. The suggested antenna design requires no more than 15.2 x 5.7 mm of space and ensures a VSWR ratio of less than 2 across the 2.4 GHz ISM band when connected to a 50 ohm source. SWRA117D Page 1 of 21 Application Note AN043 Table of Contents 1 KEYWORDS...................................................................................................................1 2 INTRODUCTION.............................................................................................................1 3 ABBREVIATIONS...........................................................................................................2 4 ANTENNA DESIGN........................................................................................................3 4.1 D ESIGN G OALS ..........................................................................................................3 4.2 S IMULATION ...............................................................................................................3 4.3 L AYOUT AND I MPLEMENTATION ...................................................................................4 5 TEST RESULTS.............................................................................................................5 5.1 R EFLECTION ..............................................................................................................5 5.2 R ADIATION P ATTERN ..................................................................................................7 5.3 O UTPUT P OWER ......................................................................................................15 5.4 S PURIOUS E MISSION AND H ARMONICS ......................................................................17 6 CONCLUSION..............................................................................................................20 7 GENERAL INFORMATION..........................................................................................21 7.1 D OCUMENT H ISTORY ................................................................................................21 3 ABBREVIATIONS CAD Computer Aided Design CC24xx CC2400, CC2420, CC2430 and CC2431 CC25xx CC2500, CC2510, CC2511, CC2550 and CC2520 CC2480 Z-Accel ZigBee Processor IFA Inverted F Antenna ISM Industrial, Scientific and Medical LOS Line Of Sight PCB Printed Circuit Board PER Packet Error Rate VSWR Voltage Standing Wave Ratio SWRA117D Page 2 of 21 Application Note AN043 4 ANTENNA DESIGN The PCB antenna on the CC2511 USB dongle reference design is a meandered Inverted F Antenna (IFA). The IFA was designed to match an impedance of 50 ohm at 2.45 GHz. Thus no additional matching components are necessary. 4.1 Design Goals The reflection at the feed point of the antenna determines how much of the applied power is delivered to the antenna. A reflection of less than -10 dB across the 2.4 GHz ISM band, when connected to a 50 ohm source, was a design goal. Reflection of less than -10 dB, or VSWR less than 2, ensures that more than 90% of the available power is delivered to the antenna. Bandwidth is in this document defined as the frequency band where more than 90% of the available power is delivered to the antenna. Another design goal was to fit the size of the PCB antenna on a USB dongle and to obtain good performance also when the dongle is connected to a computer. 4.2 Simulation IE3D from Zeland, which is an electromagnetic simulation tool, was used to design the antenna. The accuracy of the simulation is controlled by the mesh. An increase of the mesh increases the simulation time. Thus, for initial simulations mesh = 1 should be used. When a fairly good result is achieved a higher mesh should be used to obtain more accurate results. Comparison of simulation and measurement results shows that the measured reflection is between the result obtained with mesh = 5 and mesh = 1; see Figure 2 for details. Figure 2: Comparison of Simulation and Measurements Results SWRA117D Page 3 of 21 Application Note AN043 4.3 Layout and Implementation Small changes of the antenna dimensions may have large impact on the performance. Therefore it is strongly recommended to make an exact copy of the reference design to achieve optimum performance. The easiest way to implement the antenna is to import the gerber or DXF file showing the antenna layout. These files are named IFA_USB.spl and IFA_USB.dxf respectively and are included in the CC2511 USB dongle reference design available from http://www.ti.com\lpw . The imported file can be used as a template when drawing the antenna. By using this procedure it should be possible to make an exact copy. If the PCB CAD tool being used does not support import of DXF or gerber files, Figure 3 and Table 1 should be used to ensure correct implementation. It is recommended to generate a gerber file for comparison with IFA_USB.spl when making a manual implementation. Most gerber viewers have the possibility to import several gerber files at the same time. Thus by placing the gerber file, showing the manually implemented antenna, on top of IFA_USB.spl it is easy to verify that the antenna is correctly implemented. It is also recommended to use the same thickness and type of PCB material as used in the reference design. Information about the PCB can be found in a separate readme file included in the reference design. To compensate for a thicker/thinner PCB th…

Text truncated - open the document above for the full version.

EUTTESTPHOTO Model:V18 ※※※※※ENDOFREPORT※※※※※