Stacked diezoelectric resonator ladder-type filter with at least

Details Stacked diezoelectric resonator ladder-type filter with at least Stacked diezoelectric resonator ladder-type filter with at least

1994-08-08

1997-07-15

Lee, Benny T.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

310368, H03H 954

Patent

active

056487460

ABSTRACT:
A ladder-type filter having a circuit structure obtained by connecting a plurality of series resonators and a plurality of parallel resonators with each other. At least one plate type series resonator and at least one plate type parallel resonator are stacked with each other. At least one of the series and parallel resonators is an energy trap type piezo-resonator having a plate type piezoelectric vibrating part, a support part which is coupled to the piezoelectric vibrating part, and a holding part which is coupled to the support part.

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