FM receiver including a phase quadrature IF filter

摘要: FM receiver comprising an RF section, a first tunable mixer stage for frequency conversion of desired reception signal into intermediate signal, IF device and demodulator. In order to render considerable degree integration possible, while maintaining processing which is free from distortion, the according invention comprises means incorporated in path converting single-phase pair signals mutual phase quadrature, said phase-quadrature being applied in-phase quadrature paths device, polyphase filter having bandpass characteristic symmetrical around its resonance frequency, coupled