ChapterII RF-CIRCUITS

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Class Notes, 31415 RF-Communication Circuits Chapter IIRF-CIRCUITSJens Vidkj rNB230 iiContentsII RF-CIRCUITS , Concepts and 1II-1 Parallel Resonance 2Frequency 3Poles and 6Transient 8II-2 Series Resonance circuit 11II-3 Narrowband 14II-4 Series-to-Parallel 19Example II-4-1 ( impedance matching )............... 20Conversions in Narrowband 23Conversions in Broadband 26Example II-4-2 ( spiral inductor )................... 26II-5 Tuned 30Synchronously Tuned 32Example II-5-1 ( synchronous tuning ).

Fig.6 sketches the geometry of complex pole and zero positions. Starting from damping ζ=1 (18) ( Q=½) the poles are by Eq.(17)(a) constrained to move along a circle of radius ω0 from the real towards the imaginary axis with declining damping or growing Q. Once the poles and

  Circuit, Rf circuits, Damping