Surface acoustic wave filter

Details Surface acoustic wave filter Surface acoustic wave filter

1988-02-10

1989-05-09

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

333195, 333196, G03H 964, G03H 9145

Patent

active

048292737

ABSTRACT:
A frequency characteristic of a surface acoustic wave filter having at least a first transducer and a second transducer is determined by a product of a frequency amplitude characteristic of the first transducer and that of the second transducer so that the electrodes of the both transducers are formed in such a way that third harmonics band in the frequency characteristic of the first transducer is shifted out that of the second transducer in order to prevent third harmonics.

REFERENCES:
patent: 3968461 (1976-07-01), Mitchell et al.
patent: 4075582 (1978-02-01), Walker
IEEE Ultrasonic Symposium Proceeding, "Applications of Double Electrodes in Acoustic Surface Wave Device Design," T. W. Bristol et al., 1972, pp. 343-345.

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