Television receiver tuning circuit

Details Television receiver tuning circuit Television receiver tuning circuit

1992-08-28

1995-06-27

Urban, Edward F.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

4551804, 348733, H04B 116

Patent

active

054288282

ABSTRACT:
A signal selecting circuit including a first, second and third inductors coupled in series in the order named, a fourth inductor coupled between an output terminal of the third inductor and a reference potential, and varactor diodes 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.

REFERENCES:
patent: 4160213 (1979-07-01), Carter
patent: 4326295 (1982-04-01), Matsumoto
patent: 4598423 (1986-07-01), Hettiger
patent: 4771332 (1988-09-01), Metoki
patent: 4835608 (1989-05-01), Lackiw et al.
patent: 4905306 (1990-02-01), Anderson
patent: 4972509 (1990-11-01), Maejima et al.
Grundig Technische Informationen--vol. 29, No. 3, 1982; "PAL-SECAM-Tuner IF Combination for the CUC Color Television Set Chassis".
Grundig Technische Informationen-vol. 29, No. 3, 1982; "PAL-SECAM-Tuner ZF-Kobination fur das CUC-Farfernsehgerate-Chassis".

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