标签: rke

Small-apertureUHFantennasforremote-keyless-entry(RKE)applicationscanbeterminatedeitherasashortedoropenloopwithinafob.Dependingonhowtheloopisterminated,itsfar-fieldpatternandtheantenna'scharacteristicimpedancewillbeinfluenced.……

Low-costASKand/orFSKtransmitterandtransceiverICsarekeycomponentsinshort-rangeradiosystemsdesignedtoworkinunlicensedindustrial,scientific,andmedical(ISM)bandsbetween300MHzand450MHz.Applicationsfortheseshort-rangedevices(SRDs)includeremotekeylessentry(RKE),tire-pressuremonitoring(TPM),remote-controlandsecuritysystems.……

Inaremotekeylessentry(RKE)systemacarisunlockedfromadistancebyaradiocodesentfromakeyfobtoareceiverinthecar.RKEsystemsusuallyoperateatfrequenciesintheunlicensedISMbandthatincludes315MHzand433.92MHz.Withtheadventofremotestartingfeaturesandtwo-wayRKEwithverification,designerswanttoincreasetheusablerangeoftheseshort-rangedevices.ReplacingSAWresonatortransmitterswithhigh-frequency,tolerancephase-locked-looptransmittersallowsreceiverswithnarrowerbandwidthtobeused.RFICreceiverstakeadvantageofthesenarrowerbandwidthstoimprovesensitivity,whichinturnincreasestheusablerange.Oncethetransmittedpowerandthereceiversensitivityareestablished,thepathlossofthesignalfromtransmittertoreceiveristhemaindeterminationofusablerange.Thisapplicationnotedescribeshowpathlossisaffectedbythegroundbounceoftheradiosignalandgivesasimplifiedapproximateequationforpathloss.Graphspredictpathlossasafunctionofdistanceinanemptyparkinglot.Finally,thenoteoffersguidelinesforpredictingtheeffectsofmultipathsignalsandblockage.……

智能和互联汽车不再是未来的幻想，而是令人兴奋的事实。随着电子技术的发展，精密导航、安全和信息娱乐等功能特性在汽车中日渐普及，这个行业正见证着汽车技术与无线技术的最快融合。本次研讨会我们将讨论车联网，802.11p，无钥匙门禁(RKE/PKE)，蓝牙，汽车EMI电磁干扰以及相关测试方案。……

工作在工业、科学及医疗(ISM)波段,频率范围为260MHz～470MHz的近距离无线通信已广泛用于遥控无钥匙门禁系统(RKE)、家庭安防和遥控装置.FCC规范中对260MHz～470MHz频率范围提出了场强指标要求,讨论了该指标与辐射功率及接收机所测得的典型指标间的关系.ＵＨＦＩＳＭ波段发射器的辐射功率和场强测试ＬａｒｒｙＢｕ唱ｅｓｓ（美信集成产品公司）摘要：工作在工业、科学及医疗（ＩＳＭ）波段，频率范围为２６０ＭＨｚ～４７０ＭＨｚ的近距离无线通信已广泛用于遥控无钥匙门禁系统（ＲＫＥ）、家庭安防和遥控装置。ＦＣＣ规范中对２６０ＭＨｚ～４７０ＭＨｚ频率范围提出了场强指标要求，讨论了该指标与辐射功率及接收机所测得的典型指标间的关系。关键词：场强辐射功率测量接收功率测试接收电压ＭｅａｓｕｒｉｎｇｒａｄｉａｔｅｄｐｏｗｅｒａｎｄｆｉｅｌｄｓｔｒｅｎｇｔｈｆｒｏｍＵＨＦＩＳＭｔｒａｎｓｍｉｔｔｅｒｓｈｎ了Ｂｕｒｇｅｓ８……

摘要：MAX1441接近和触摸传感器是专为电容式接近感应应用，包括汽车被动遥控车门开关（PRKE）。该传感器具有嵌入式快闪记忆体的2-K字必须与用户的应用程序固件编程。这个程序员开发，以便在生产环境中的MAX1441闪存编程。程序员不断轮询通信MAX1441的USB-JTAG接口。MAX1441器件一旦被发现，它会删除，程序，并确认在嵌入式快闪记忆体约3秒钟。然后，它会启动下MAX1441的投票站进行编程。可以启动应用程序的多个实例在同一台计算机上。Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>Automotive>APP5280Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>EnergyMeasurement&Metering>APP5280Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>Sensors>APP5280Keywords:passivekeylessentry,PKE,remotekeylessentry,RKE,signalconditioner,lowpower,proximitysensor,touchsensor,RFIDreaders,metertamperingpreventionDec21,2011APPLICATIONNOTE5280MAX1441ProximityandTouchSensorProgrammerUserManualBy:YoussofFathiDec21,2011Abstract:TheMAX1441proximityandtouchsensorisdesignedforcapacitiveproximitysensing……

摘要：在电池供电的RF发射器，如车库门开启装置和汽车远程无钥匙进入电池水渠，发射功率通常落在。本应用笔记演示，结合高效率升压或升压，电压转换器与ISM发射机将保持恒定的发射功率超过电池电压范围内（下0.5分贝变化）。性能数据将显示，电池寿命为恒定的发射功率发射机电池电压下降，其功率下降的2倍。电压转换所产生的交流电压纹波不降低的幅度键控（ASK）数据链路的质量和不违反美国和欧洲的无线电排放标准的短程无线链路。Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>Automotive>APP5023Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>Power-SupplyCircuits>APP5023Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>WirelessandRF>APP5023Keywords:RF,ISM,transmitter,RKE,RFremotecontrol,shortrangeradioJan09,2012APPLICATIONNOTE5023ISMTransmitterHasConstantTransmitterPowerforVaryingSupplyVoltageJan09,2012Abstract:Inbattery-poweredRFtransmitterssuchasgaragedooropenersandremotekeylessentryforcars,asthebatterydrains,thetransmitpowertypicallyfalls.Thisapplicationnote……

摘要：作为一个在FOB短路或开环小孔径超高频天线用于远程无钥门禁（RKE）应用，可以终止。取决于如何终止循环，其远场模式和天线的特性阻抗会受到影响。Maxim>AppNotes>AutomotiveKeywords:UHFantenna,RKE,remotekeylessentryMar26,2006APPLICATIONNOTE3621SmallLoopAntennas:Part1―SimulationsandAppliedTheoryAbstract:Small-apertureUHFantennasforremote-keyless-entry(RKE)applicationscanbeterminatedeitherasashortedoropenloopwithinafob.Dependingonhowtheloopisterminated,itsfar-fieldpatternandtheantenna'scharacteristicimpedancewillbeinfluenced.InthisapplicationnotewewillexploreantennatheoryanddesignusingEZNEC,aneasy-to-useantennasimulator.Wewillmeasuretheantenna'scharacteristicimpedancethroughourapplicationboard.Theresultswillshowthetradeoffsbetweenopenandshortedloops,theeffectsoftheground……

移键控（ASK）和小康键控（OOK）接收器，用于间歇性低数据速率应用的RKE，安全回家，车库门开启装置，远程控制等。来从远程发射机的ASK或OOK接收的数据，在数据切片重建。数据切片，因此，一个组成部分，ASK和FSK接收机在260MHz到470MHz短距离UHF波段操作下的FCCPart15.231规则。本应用笔记介绍Maxim的UHF接收机，包括对MAX1470，MAX1473，MAX1471，MAX7030和MAX7032的像收发数据切片的运作。Maxim>AppNotes>BASESTATIONS/WIRELESSINFRASTRUCTUREWIRELESS,RF,ANDCABLEKeywords:amplitude-shiftkeying,ASK,On-OffKeying,OOK,RKE,dataslicers,FSK,short-rangeUHFband,260MHz,Dec22,2005470MHz,MAX1470,max1473,max1471,max7030,max7032,demodulatedASKsignalAPPLICATIONNOTE3671DataSlicingTechniquesforUHFASKReceiversAbstract:Amplitude-shiftkeying(ASK)andon-offkeying(OOK)receiversareusedforintermittentlow-data-rateapplicationslikeRKE,homesecurity,garage-dooropeners,andremotecontrols.ThedatathatcomestoanASKorOOKreceiverfromaremotetransmitterisreconstructedinthedataslicer.Thedatasliceris,therefore,anintegralpartofASKandFSKreceiversthatoperateinthe260MHzto470MHzshort-rangeUHFban……

Manyautomotivemechanicalfunctionshavebeenreplacedoramendedbyelectroniccircuitsinrecentyears.Oneconsequencehasbeenarapidincreaseinthenumberofmicrocontrollerspercar,producingasimilarincreaseinthetotalcurrentdrawnfromthecarbattery.Aslongthecarmotorisrunningandthealternatorisoperatingproperly,thispowerconsumptionisnotaconcern.……