Surface acoustic wave devices for processing and storing signals

Details Surface acoustic wave devices for processing and storing signals Surface acoustic wave devices for processing and storing signals

1976-05-27

1978-07-18

Gruber, Felix D.

Boots, shoes, and leggings

310313, 310366, 333 30R, 333 72, 357 51, 364861, 365175, G06G 719, H04R 1700

Patent

active

041019652

ABSTRACT:
A surface acoustic wave device utilizing a piezoelectric substrate capable of propagating traveling acoustic waves along a surface thereof and a semiconductive substrate positioned adjacent such surface, the latter substrate having an array of diodes, preferably Schottky diodes, disposed in the surface thereof opposite the piezoelectric substrate to form an interaction region. Application of a signal uniformly over the interaction region will charge the diodes uniformly and a traveling acoustic wave will interact with the uniformly applied signal to alter the charging pattern of the array in accordance with the acoustic wave amplitude to produce a corresponding altered conductivity pattern in the semiconductor substrate representing the interaction of the uniformly applied signal and the traveling wave signal. A second signal can thereupon be propagated along the piezoelectric substrate to interact with the stored altered conductivity pattern to provide either correlation or convolution operation depending on the direction of propagation thereof along the piezoelectric surface.

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