发明名称 |
Transducer isolation in surface acoustic wave processor |
摘要 |
The invention is an improved manufacturing technique for producing a certain class of Surface 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 electromagnetic 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.
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申请公布号 |
US4403165(A) |
申请公布日期 |
1983.09.06 |
申请号 |
US19820375895 |
申请日期 |
1982.05.07 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE ARMY |
发明人 |
BALLATO, ARTHUR D.;MARIANI, ELIO A. |
分类号 |
H03H9/44;(IPC1-7):H03H9/25 |
主分类号 |
H03H9/44 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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