04773138 is referenced by 6 patents and cites 2 patents.

An improved manufacturing technique for producing a certain class of Surf Acoustic Wave (SAW) devices, namely those having input and output transducers in close proximity. A much higher manufacturing yield results from eliminating the cutting of a slot in the substrate between input and output transducers as formerly done. This frequently destructive step is replaced by ion-milling of a deep groove between the ports and backfilling with a metal of proper configuration to provide elecromagnetic shielding. The technique produces a new device that is at least equal to the prior art in rejection of unwanted couplings between input and output.

Title
Method of producing transducer isolation in surface acoustic wave processor
Application Number
375895
Publication Number
4773138
Application Date
July 27, 1983
Publication Date
September 27, 1988
Inventor
Elio A Mariani
Hamilton Square
NJ, US
Arthur D Ballato
Long Branch
NJ, US
Agent
Robert A Maikis
Sheldon Kanars
Assignee
The United States of America represented by the Secretary of the Army
DC, US
IPC
H01L 41/22
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