Surface wave device for treating signals

Details Surface wave device for treating signals Surface wave device for treating signals

1977-03-10

1978-11-07

Smith, Alfred E.

Wave transmission lines and networks

Coupling networks

With impedance matching

333 72, 357 15, 357 26, 364821, H03H 926, H03H 930, G06G 719, G11C 2702

Patent

active

041248287

ABSTRACT:
A device for treating electrical signals by correlation or convolution, by means of elastic surface waves. It comprises a semiconductor substrate on which a network of Schottky diodes is formed and which, in one embodiment, is covered by a thin layer of piezoelectric material. The end faces of the device each carry an electrode. The piezoelectric surface carries an electromechanical transducer at each of its ends. This device provides for the memorization of a reference signal applied to one of the transducers and for the correlation or convolution of that signal with a second signal applied to one of the transducers.

REFERENCES:
patent: 3935564 (1976-01-01), Quate et al.
patent: 3975696 (1976-08-01), Kantorowicz
patent: 3982113 (1976-09-01), Coldren
Ingebrigtsen et al.-"A Schottky-Diode Acoustic Memory and Correlator", Applied Physics Letters, vol. 26, No. 11, Jun. 1, 1975; pp. 596-598.
Maerfeld et al.-"Acoustic Storage and Processing Device Using P-N Diodes"-Applied Physics Letters, vol. 27, No. 11, Dec. 1, 1975; pp. 577-578.

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