Multipath noise detecting circuit

Details Multipath noise detecting circuit Multipath noise detecting circuit

1986-08-25

1988-05-03

Masinick, Michael A.

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

455307, 455309, 381 94, H04B 110

Patent

active

047425709

ABSTRACT:
A multipath noise detecting circuit, which is not affected by ignition noise nor by the level of the antenna input voltage, includes a band pass filter having a mean frequency of 114 KH supplied with signals output from a FM demodulator, an AM detector for subjecting the signal input from said band pass filter to AM-detection, and a detector section for detecting as multipath noise the pulses included in the signal output from said AM-detector.

REFERENCES:
patent: 4301541 (1981-11-01), Tanaka et al.
patent: 4397040 (1983-08-01), Jandel et al.
patent: 4466133 (1984-08-01), Price
patent: 4480335 (1984-10-01), Kishi
patent: 4491957 (1985-01-01), Kamalski

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