Wide band demodulator of phase modulated signals

Details Wide band demodulator of phase modulated signals Wide band demodulator of phase modulated signals

1980-03-10

1982-05-04

Brown, Thomas W.

Multiplex communications

Wide area network

Packet switching

250208, 324 77K, 329137, G01R 2317, G02F 139, H03D 306, H04J 116

Patent

active

043285767

ABSTRACT:
A wide band demodulator of phase modulated radio frequency signals is disclosed, wherein first and second sets of sonic waves are generated within a Bragg cell, one set being phase shifted with respect to the other set, together with means for directing a linear diffraction pattern of the light output of the Bragg cell at first and second phase displaced correlation masks, together with a first and second array of photodetectors which receive the integral of the light passing through associated masks, thereby to enable the simultaneous detection of a very large number of phase modulated signals on a real time basis, and wherein there is virtually no interference between channels and the need for a very large number of local oscillators is eliminated.

REFERENCES:
patent: 3942109 (1976-03-01), Crumly et al.
patent: 4126834 (1978-11-01), Coppock
patent: 4253060 (1981-02-01), Chen

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