Slide 1Low Freq Common-Emitter BJT ModelABCD Parameters of Some CircuitsConversion Between Network RepsMicrowave Amplifier SubnetworksHigh Frequency BJT ModelS-Parameter Computation for T-NetworkSignal Flow DiagramsSignal Flow: Terminated Transmission LineSignal Flow: Building BlocksSignal Flow: Terminated Two PortSignal Flow: SimplificationSignal Flow: Simplification – Con’t 1Signal Flow: Simplification – ResultantSlide 15Measuring S11 & S21S-Parameter Measurement Signal FlowTRL Calibration MethodTRL Calibration Method – Con’tELEC 412 - Lecture 9 1ELEC 412 RF& Microwave EngineeringFall 2004Lecture 9ELEC 412 - Lecture 9 2Low Freq Common-Emitter BJT Model•Model is the hybrid- BJT model where rBE = r , rBC = r , and rCE = roELEC 412 - Lecture 9 3ABCD Parameters of Some CircuitsELEC 412 - Lecture 9 4Conversion Between Network RepsELEC 412 - Lecture 9 5Microwave Amplifier Subnetworks•Amplifier is separated into subnetworks•Add all subnetworks together for complete amplifier designELEC 412 - Lecture 9 6High Frequency BJT Model•Model is high-frequency hybrid- model•rBE=r, rCE=ro,CBE=C, CBC=CELEC 412 - Lecture 9 7S-Parameter Computation for T-NetworkT-NetworkS11 & S21 Circuit S12 & S22 CircuitELEC 412 - Lecture 9 8Signal Flow DiagramsELEC 412 - Lecture 9 9Signal Flow: Terminated Transmission LineELEC 412 - Lecture 9 10Signal Flow: Building BlocksELEC 412 - Lecture 9 11Signal Flow: Terminated Two PortELEC 412 - Lecture 9 12Signal Flow: SimplificationELEC 412 - Lecture 9 13Signal Flow: Simplification – Con’t 1ELEC 412 - Lecture 9 14Signal Flow: Simplification – ResultantELEC 412 - Lecture 9 15Signal Flow: Terminated Transmission LineELEC 412 - Lecture 9 16Measuring S11 & S21ELEC 412 - Lecture 9 17S-Parameter Measurement Signal FlowELEC 412 - Lecture 9 18TRL Calibration MethodELEC 412 - Lecture 9 19TRL Calibration Method –
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