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标签: rfpic12f675

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环形天线设计的rfPIC12F675

所需E币: 3

时间: 2019-12-24 21:18

大小: 560.31KB

上传者: 微风DS

Thisapplicationnotedescribesthedesignofasingle-endedloopantennaforrfPIC12F675transmitters.ThePCBdesignwillcoverall3frequencybandsfrom290MHzthrough930MHzwithafewcomponentvaluechanges.ThepreviousMicrochipRFtransmittershadbalancedoutputswhichrequiredtwiceasmanycomponentstobiasthepoweramplifierandmatchimpedance.TherfPIC12F675usesfewercomponents,deliversalmost10dBmoreoutputpowertotheantenna,andincreasesthemaximumfrequencyto930MHz.AN868DesigningLoopAntennasfortherfPIC12F675ThisapplicationnotealsodocumentsthetuningandtestingoftheantennadesigntoavoidamanufacturingAuthor:MyronLoewenstepfortuning.ApictureofthefinishedboardisshownMicrochipTechnologyInc.inFigure1.FormoredetailsonRFregulatorylimitsandcompliancetestingseeApplicationNoteAN242,……

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