Three terminal type piezoelectric filter

Details Three terminal type piezoelectric filter Three terminal type piezoelectric filter

1981-02-06

1982-12-21

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

310366, H03H 915, H03H 954

Patent

active

043652182

ABSTRACT:
A piezoelectric filter of three terminal type which includes a piezoelectric substrate having one main surface at its one face and the other main surface at its other surface, an input electrode and an output electrode respectively provided on the one main surface of the piezoelectric substrate and a common electrode provided on the other main surface of the piezoelectric substrate. The output electrode is provided so as to face or confront the input electrode in a spaced relation from the input electrode, while the common electrode is arranged selectively not to confront, or to confront, to a certain extent at its peripheral edge portion, the output electrode through the piezoelectric substrate.

REFERENCES:
patent: 2969512 (1961-01-01), Jaffe et al.
patent: 3638146 (1972-01-01), Takaku et al.
patent: 4066986 (1978-01-01), Takano et al.

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