Surface acoustic wave resonator

Details Surface acoustic wave resonator Surface acoustic wave resonator

1977-09-28

1979-07-24

Smith, Alfred E.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

333195, H03H 902, H03H 926, H03H 932, H03H 904

Patent

active

041624661

ABSTRACT:
Applicants have discovered that the performance of Surface Acoustic Wave Resonators can be markedly improved by digressing from the accepted techniques of sensing standing waves set up by resonation in the SAW device. Applicants have developed a SAW resonator which employs one or more unidirectional transducers which are sensitive to traveling rather than standing waves. This construction obviates the deletevious action of direct, broad band, input to output coupling and avoids the high position sensitivity which occurs when bidirectional transducers are utilized to sense standing wave patterns.

REFERENCES:
patent: 4081769 (1978-03-01), Shreve

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