Resonator structure

Details Resonator structure Resonator structure

1986-01-24

1988-03-15

LaRoche, Eugene R.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

310313D, H03H 915

Patent

active

047315954

ABSTRACT:
A surface acoustic wave resonator device having a resonant cavity formed on a substrate between a transducer and its related grating that causes a symmetric frequency response with one major resonant frequency response and low spurious frequency responses, with no etched grooves or recessed electrodes, with a minimum electrode geometry of .lambda./4, with single level fabrication and uniform wave velocity throughout the structure and being frequency insensitive to electrode reflections.

REFERENCES:
patent: 3886504 (1975-05-01), Hartmann et al.
patent: 4081769 (1978-03-01), Shreve
patent: 4281301 (1981-07-01), Stevens et al.
patent: 4325037 (1982-04-01), Bulst et al.
patent: 4467235 (1984-08-01), De Wames et al.
patent: 4507581 (1985-03-01), Tabuchi et al.
patent: 4616197 (1986-10-01), Wright
patent: 4635009 (1987-01-01), Ebata

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