Television tuner for balance-inputting signal to balanced mixer

Details Television tuner for balance-inputting signal to balanced mixer Television tuner for balance-inputting signal to balanced mixer

2008-04-29

2008-04-29

Natnael, Paulos M. (Department: 2622)

Television

Receiver circuitry

Tuning

Reexamination Certificate

active

07365804

ABSTRACT:
A television tuner includes an unbalanced tuning circuit and a balanced mixer provided at the next stage of the tuning circuit. An output port of the tuning circuit is grounded through a serial circuit composed of an inductive element and a capacitive means. The output port of the tuning circuit is connected to one input port of the mixer. A connection point provided between the inductive element and the capacitive means is connected to the other input port of the mixer. This permits phases of the signals input to two input ports of the mixer to be inverted to each other.

REFERENCES:
patent: 3828257 (1974-08-01), Puskas
patent: 4590616 (1986-05-01), van Glabbeek
patent: 4619001 (1986-10-01), Kane
patent: 4921465 (1990-05-01), Hietala et al.
patent: 6011966 (2000-01-01), Ono et al.
patent: 7-7452 (1995-01-01), None
patent: 3096169 (2003-06-01), None

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