Transcription of 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 2 Frequency 3 Poles and 6 Transient 8II-2 Series resonance circuit 11II-3 Narrowband 14II-4 Series-to-Parallel 19 Example II-4-1 ( impedance matching ).. 20 Conversions in Narrowband 23 Conversions in Broadband 26 Example II-4-2 ( spiral inductor ).. 26II-5 Tuned 30 Synchronously Tuned 32 Example II-5-1 ( synchronous tuning ).. 33 Butterworth Stagger Tuned 36 Example II-5-2 ( Butterworth amplifier ).. 41II-6 Transformers and Transformerlike 45 Review of Mutual 45 Equivalent Circuits for Two Coupled 53 Example II-6-1 ( practical RF transformers ).. 55 Tuned 57 Example II-6-2 ( transformer-coupled tuned amplifier ).
Scanning contents, the chapter starts summarizing basic properties of resonance circuits. Although significant by themselves, the importance of acquiring familiarity with ideal resonance circuits is the fact, that any narrowbanded resonance circuit may be approximated by the ideal ones around resonance frequencies.
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