Ladder filter containing piezoresonator with conductive elastic

Details Ladder filter containing piezoresonator with conductive elastic Ladder filter containing piezoresonator with conductive elastic

1995-05-23

1997-01-28

Lee, Benny

Wave transmission lines and networks

Coupling networks

Electromechanical filter

333190, 333186, 310348, H03H 900, H03H 958

Patent

active

055981330

ABSTRACT:
A ladder filter wherein an inside of a case is partitioned by a vertical partition wall into four containing portions. Each containing portion contains at least one piezoresonator, and an input terminal, an output terminal and junction terminals are portioned out into the containing portions. A grounding terminal is contained at a bottom of the case.

REFERENCES:
patent: 4353045 (1982-10-01), Matsui et al.
patent: 4656385 (1987-04-01), Tanaka
patent: 4737742 (1988-04-01), Takeshima et al.
patent: 4864259 (1989-09-01), Takamoro et al.
patent: 5057802 (1991-10-01), Ozaki et al.
patent: 5260675 (1993-11-01), Ogama et al.
patent: 5392012 (1995-02-01), Iwata et al.

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