Television receiver tuning circuit

摘要

A signal selecting circuit including a first, second and third inductors (66,38,40) coupled in series in the order named, a fourth inductor (36) coupled between an output terminal of the third inductor (40) and a reference potential, and varactor diodes (42,50) responsive to a tuning signal for varying the frequency response of the signal selecting circuit. The signal selecting circuit includes bandswitching circuitry for changing the configuration of the signal selecting circuit in response to the frequency band of the selected signal. <IMAGE>