Intermediate frequency circuit with solid state trap

Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry

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H04N 550

Patent

active

044842228

ABSTRACT:
A color television receiver includes a surface acoustic wave intermediate frequency amplifier and a gain block feeding a synchronous detector. A non-adjustable solid state (piezonator) sound carrier trap is coupled between the gain block and the synchronous detector by impedance matching capacitors.

REFERENCES:
patent: 4107730 (1978-08-01), Jones

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