Piezoelectric monolithic crystal element having improved respons

Details Piezoelectric monolithic crystal element having improved respons Piezoelectric monolithic crystal element having improved respons

1977-10-31

1979-04-10

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310366, H01L 4110

Patent

active

041491025

ABSTRACT:
A piezoelectric monolithic crystal filter operating in the trapped energy mode and having a capacitor plated on the piezoelectric wafer within energy coupling distance of the main electrodes has its output response improved by trapping wave energy, at the frequencies of the main electrodes, engendered by the capacitor and conducting such energy to the edges of the piezoelectric wafer where it is dissipated. Such energy is therefore not coupled into the filter structure and does not appear as an undesirable response.

REFERENCES:
patent: 3382381 (1968-05-01), Horton
patent: 3659123 (1972-04-01), Oya
patent: 3676724 (1972-07-01), Berlincourt et al.
patent: 3898489 (1975-08-01), Grady et al.

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