Demodulator for spread spectrum communication

Details Demodulator for spread spectrum communication Demodulator for spread spectrum communication

1991-06-04

1993-02-16

Gregory, Bernarr E.

Pulse or digital communications

Repeaters

Testing

380 34, 375 96, 310313B, 333193, H04L 2730, H01L 4104, H01L 4108

Patent

active

051877180

ABSTRACT:
A demodulator for a spread spectrum communication system, including a piezoelectric substrate for causing elastic surface waves, an input electrode provided on the surface of the piezoelectric substrate, an intermediate electrode provided on the piezoelectric substrate surface a predetermined distance away from the input electrode, so as to form a matched filter together with the input electrode, and an output electrode provided on the piezoelectric substrate surface at a predetermined distance away from the intermediate electrode, so as to form a delay path together with the intermediate electrode.

REFERENCES:
patent: 3736587 (1973-05-01), Bush et al.
patent: 4247903 (1981-01-01), Grudkowski et al.
patent: 4675839 (1987-06-01), Kerr
patent: 4969159 (1990-11-01), Belcher et al.
patent: 4998261 (1991-03-01), Van Driest et al.

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