Wave transmission lines and networks – Coupling networks – Electromechanical filter
Patent
1992-11-25
1994-12-20
Pascal, Robert J.
Wave transmission lines and networks
Coupling networks
Electromechanical filter
310313D, H03H 964
Patent
active
053749081
ABSTRACT:
A surface acoustic wave device for generating an output signal with only a symmetric or only an asymmetric vibration acoustic wave mode in a piezoelectric substrate. The device has first and second transversely spaced transducers and the device is driven from both the first and second transducers. A third transducer is between and acoustically coupled to the first two transducers. The electrodes of all three transducers are arranged with respect to each other so as to cause only a symmetrical acoustic vibration mode or only an asymmetrical acoustic vibration mode in the piezoelectric substrate.
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Gambino Darios
Pascal Robert J.
RF Monolithics, Inc.
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