ChapterII RF-CIRCUITS - DTU

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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 )................ 33Butterworth Stagger Tuned 36Example II-5-2 ( Butterworth amplifier ).............. 41II-6 Transformers and Transformerlike 45Review of Mutual 45Equivalent Circuits for Two Coupled 53Example II-6-1 ( practical RF transformers )........... 55Tuned 57Example II-6-2 ( transformer-coupled tuned amplifier ).

circuit in Fig.1. The curves are symmetric around ωo due to the logarithmic fre-quency scales. (8) in Fig.3 , correspond to a denominator size equal to 2 in Eq.(7). The bounds are found setting the imaginary part of the denominator equal in magnitude to the real part, i.e. Both negative and positive frequencies are contained in the conditions.

  Circuit, Logarithmic, Rf circuits