Receiver having a modulation amplifier for enhancing reception o

Details Receiver having a modulation amplifier for enhancing reception o Receiver having a modulation amplifier for enhancing reception o

1986-04-04

1987-12-01

LaRoche, Eugene R.

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

375 58, 375 99, 455 63, 455296, H03D 104, H04B 110, H04B 1500

Patent

active

047107235

ABSTRACT:
To enhance the detection of a desired signal in the presence of interference, the degree of modulation of a received input signal is amplified. In the preferred embodiments, this is accomplished by amplifying the degree of amplitude modulation. This works especially well in situations where constant or substantially constant envelope jamming is employed. However, the arrangement is also effective in some cases where the jamming signal has a rapidly fluctuating envelope. The success of the technique in cases of rapidly fluctuating envelopes depends upon the probability distribution of the envelope.

REFERENCES:
patent: 3409834 (1968-11-01), Cullis et al.
patent: 4270223 (1981-05-01), Marston
patent: 4272846 (1981-06-01), Muratani et al.
patent: 4388723 (1983-06-01), Keen
patent: 4608701 (1986-08-01), Burgurs et al.

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