Surface acoustic wave filter

Details Surface acoustic wave filter Surface acoustic wave filter

1982-01-13

1984-05-22

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

310313D, 310367, 333195, H03H 964

Patent

active

044504209

ABSTRACT:
A surface acoustic wave filter comprises aluminum input and output transducers, an aluminum 3db coupler, an aluminum reflector, and a triangularly configured substrate constructed from lithium niobate. In a specific configuration the lengths of the sides of the substrate are equal to approximately 6.06, 9.25 and 11.05 millimeters respectively. The triangular configuration not only reduces the amount of substrate material required but also attenuates the degree of signal reflection encountered.

REFERENCES:
patent: 4247835 (1981-01-01), Lewis
patent: 4350963 (1982-09-01), Iwamoto et al.

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