Receiver for a spread spectrum communication system having a tim

Details Receiver for a spread spectrum communication system having a tim Receiver for a spread spectrum communication system having a tim

1985-04-10

1987-06-23

Harkcom, Gary V.

Boots, shoes, and leggings

364861, 333150, 333154, G06G 7195

Patent

active

046758399

ABSTRACT:
A convolver having at least a first interdigital transducer for generating a first surface acoustic wave in response to an input signal and a second interdigital transducer for generating a second surface acoustic wave counter to the first surface acoustic wave in response to a time reversed-time multiplexed reference signal. A segmented summing bus having a plurality of fingers extending into the interaction region of the first and second surface acoustic waves generates a plurality of samples indicative of the convolution of the first and second surface acoustic waves. The convolver also includes a pair of acoustic horns, one disposed between the segmented summing bus and each of the interdigital transducers and a ground bus having a plurality of filler segments extending intermediate the fingers of the segmented summing bus.

REFERENCES:
patent: 4224683 (1980-09-01), Adkins
patent: 4388599 (1983-06-01), Gautier et al.
patent: 4428062 (1984-01-01), Michaels
patent: 4448805 (1984-05-01), Lewis
patent: 4473888 (1984-09-01), Smith
patent: 4592009 (1986-05-01), Masheff

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