Technique for mass production of coded surface acoustic wave dev

Details Technique for mass production of coded surface acoustic wave dev Technique for mass production of coded surface acoustic wave dev

1990-04-05

1992-07-28

Beck, Shrive

Coating processes

Electrical product produced

Piezoelectric properties

428195, 430 5, C23C 2600

Patent

active

051339900

ABSTRACT:
A technique of providing numerous distinct conductive patterns on a piezoelectric substrate is accomplished using only two masking apparatus. One masking apparatus defines a common portion or structure for each of the patterns. The second masking apparatus defines numerous distinct patterns, each corresponding to a different alignment position with respect to the common structure already formed on the substrate. One application for this technique is in economic production of coded SAW devices which may serve as coding or decoding devices, filters, or correlators, each of the SAW devices having a different individual code.

REFERENCES:
patent: 3701147 (1972-10-01), Whitehouse
patent: 3899666 (1975-08-01), Bolger
patent: 4427515 (1984-01-01), Yuhara
patent: 4595853 (1986-06-01), Nazatsuma
patent: 4679014 (1987-07-01), Bulst
patent: 4682130 (1987-07-01), Bulst
patent: 4686111 (1987-08-01), Cho
patent: 4737790 (1988-04-01), Skeie
patent: 4931664 (1990-06-01), Knoll
patent: 4951057 (1990-08-01), Nagel

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