Remanent subcarrier component suppressing device for balanced mo

Details Remanent subcarrier component suppressing device for balanced mo Remanent subcarrier component suppressing device for balanced mo

1987-10-22

1988-11-29

LaRoche, Eugene R.

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

455 63, H03C 300

Patent

active

047885130

ABSTRACT:
A device to be incorporated with a balanced modulator included in a sub-channel of a stereophonic modulator circuit for suppressing a subcarrier component remaining in the output signal of the balanced modulator. This device only includes a full-wave rectifier for rectifying the subcarrier and a mixer for subtractively mixing the output of the modulator with the rectified subcarrier wave, thereby effectively cancelling the remanent subcarrier component in very simple and economical fashion.

REFERENCES:
patent: 4323731 (1982-04-01), Hershberger
"Broadcasters" published by Nippon Hoso Shuppan Kyokai on Apr. 20, 1983, pp. 66-70.

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