Television tuner having less distortion

Details Television tuner having less distortion Television tuner having less distortion

2005-03-08

2005-03-08

Lee, Michael H. (Department: 2614)

Television

Receiver circuitry

Tuning

C348S725000, C348S730000, C455S178100, C455S191300

Reexamination Certificate

active

06864925

ABSTRACT:
A television tuner includes an input tuning circuit and an interstage tuning circuit. Each of the tuning circuits comprises a band-switching tuning circuit having a tuning inductor and a switching diode for switching an inductance of the inductor. A power supply voltage is applied to the anode of each of the switching diodes via each of anode-side feed resistors, the anode being DC-grounded via a current-conductor. A tuning frequency band of each of the input tuning circuit and the interstage tuning circuit is switched by applying a high or low level switching voltage to the cathode of each of the switching diodes via each of cathode-side feed resistors.

REFERENCES:
patent: 3892983 (1975-07-01), Okada et al.
patent: 4305158 (1981-12-01), Fujishima et al.
patent: 4326295 (1982-04-01), Matsumoto et al.
patent: 4771332 (1988-09-01), Metoki
patent: 6583826 (2003-06-01), Sawamoto et al.
patent: 6665022 (2003-12-01), Yamamoto et al.
patent: 2836288 (1979-03-01), None
patent: 3240491 (1983-07-01), None
patent: 4028572 (1992-03-01), None
patent: 19819544 (1999-11-01), None
patent: 0065013 (1982-11-01), None
patent: 0929153 (1999-07-01), None
patent: 09-093091 (1997-04-01), None

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