Input circuit for television receiver

Details Input circuit for television receiver Input circuit for television receiver

1984-05-15

1986-06-17

Ng, Jin F.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455133, 455140, H04B 116

Patent

active

045960453

ABSTRACT:
An input circuit is provided for a television receiver for amplifying and transforming the input signals into an intermediate frequency signal. The output of the mixers is fed via intermediate-frequency bandpass filters to respective decoupling diodes, which are switched on depending on the selected receiver frequency range. The output of the decoupling diodes is fed to an impedance transformer such as an emitter follower and its output in turn is entered into an intermediate-frequency amplifier.

REFERENCES:
patent: 3268816 (1966-08-01), Featherston
patent: 3696302 (1972-10-01), Gossard
patent: 4227156 (1980-10-01), Mattfeld
patent: 4379271 (1983-04-01), Lehmann
Farbfernsehtachnik, B. Morgenstern, Teubner, Stuttgart, 1977, p. 134.
Nachrichtenelektronik, Europa-Lehrmittel No. 32254, Wuppertal, 116-124.

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