Surface acoustic wave device and method of manufacturing same

Details Surface acoustic wave device and method of manufacturing same Surface acoustic wave device and method of manufacturing same

1975-02-14

1976-09-28

Smith, Alfred E.

Wave transmission lines and networks

Coupling networks

With impedance matching

310 82, 310 98, 333 72, H03H 926, H03H 930, H03H 932, H01L 4110

Patent

active

039835146

ABSTRACT:
The present invention relates to electromechanical devices for the transmission of surface acoustic waves between a launching transducer and a receiving transducer arranged upon the main face of a substrate. The transmission device in accordance with the invention comprises ground zones provided in order to scatter the vibrational energy of bulk waves propagating within the thickness of the substrate. The creation of the ground zones involves the use of a jet of sand directed on to the large faces of the substrate.

REFERENCES:
patent: 3633132 (1972-01-01), Hartemann
patent: 3753166 (1973-08-01), Worley et al.
patent: 3781721 (1973-12-01), Judd et al.
patent: 3836876 (1974-09-01), Marshall et al.
patent: 3887887 (1975-06-01), Wagers et al.

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