Dual mode tuning arrangement

Details Dual mode tuning arrangement Dual mode tuning arrangement

2007-11-27

2007-11-27

Hsia, Sherrie (Department: 2622)

Television

Receiver circuitry

Television receiver adapted to receive radio broadcast or in...

C348S725000

Reexamination Certificate

active

10523382

ABSTRACT:
In a local oscillator for a tuning arrangement for both TV and FM signals there is substantial risk of parasitic oscillation. A special provision is disclosed for effectively reducing this risk. The special provision is a connection of a damping resistor (R1a) for suppressing parsitic oscillations between ground and a junction (J2) of a parallel LC resonator of the local oscillator.

REFERENCES:
patent: 5404052 (1995-04-01), Lange
patent: 6353462 (2002-03-01), Osada et al.
patent: 911960 (1999-04-01), None
patent: 61131919 (1986-06-01), None

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