FM receiver including a phase-quadrature polyphase if filter
作者： Willem A. Sloof , Kaveh Kianush , Wolter Bijker , Hendricus C. De Ruyter , Wolfdietrich G. Kasperkovitz
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摘要: An FM receiver having an RF section, a first tunable mixer stage for the frequency conversion of desired reception signal into intermediate signal, IF device and demodulator. In order to enhance integration apparatus, while maintaining processing ability which is free from distortion, includes circuitry incorporated in path converting single-phase pair signals mutual phase quadrature. The phase-quadrature applied in-phase quadrature paths device. polyphase filter has bandpass characteristic symmetrical around its resonance frequency. coupled
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