所需E币: 4
时间: 2020-1-13 18:30
大小: 119.1KB
S-ParametersSheet1of11S-PARAMETERSScatteringMatrixV1iV2iI1I2V1V1rZ01Z02V2V2rt1InputT.LL1=0V1=V1i+V1rReferenceplanest2OutputT.LL2=0V2=V2i+V2rDefinenormalisedvoltagesa1=NoteUsingnormalisedvoltages≡makingthecharacteristicimpedances=1V1iZ01V1rZ01V2iZ01V2rZ01a2b1=a2=b2=a1b1b2t1Outgoingvoltagewaves∝ingoingvoltagewaves.t2b1=S11.a1+S12.a2b2=S21.a1+S22.a2S11S12a1b1b2=S21S22a2ScatteringMatrixSheet2of11MeasurementofS11&S12(1)ApplyinputtoPort1,terminateatPort2withaMatchedLoad∴a2=0.∴S11=b1=reflectioncoefficientatPort1(matchedloadatPort2).a1a2=0b2=VoltagetransferratioPort1toPort2(matchedloadatPort2).a1……