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振蕩器的設計基礎知識MicrowaveOscillatorDesignApplicationNoteA008NOTE:ThispublicationisareprintofapreviouslypublishedApplicationNoteandisfortechnicalreferenceonly.IntroductionThisapplicationnotedescribesamethodofdesigningoscillatorsusingsmallsignalsparameters.Thebackgroundtheoryisfirstdevelopedtoproducethedesignequations.Theseequationsarethenappliedtodevelopthreedifferentoscillators:a4GHzbipolarlumpedresonatoroscillator,a4GHzbipolardielectricresonatoroscillator,anda12GHzGaAsFETdielectricresonatoroscillator.TheoryMicrowavetransistorscanbeusedforbothamplifierandoscillatorapplications.Fromthesmallsignalsparametersofthetransistor,thestabilityfactorkcanbecalculatedfrom:k=1+Ds11s222s21s12……