Ladder type band-pass filter comprising of assembled plural vibr

Details Ladder type band-pass filter comprising of assembled plural vibr Ladder type band-pass filter comprising of assembled plural vibr

1990-07-18

1992-10-27

LaRoche, Eugene R.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

310348, 310355, H03H 910

Patent

active

051593025

ABSTRACT:
There is disclosed a ladder type band-pass filter comprising plural vibrator blocks. Each vibrator block comprises a plate-shaped vibrator arranged in an electrically insulating frame. First and second metallic plates are fixed in the frame, and then, support the vibrator for vibration in the frame by arranging the vibrator between the first and second metallic plates. A pair of leading electrodes are formed on the frame so that a pair of leading electrodes are electrically connected to the first and second metallic plates, respectively, when the first and second metallic plates are fixed in the frame. Plural vibrator blocks are bonded in the axis direction of the frames, and the first and second leading electrodes of plural vibrator blocks are electrically connected so as to produce a ladder type band-pass filter.

REFERENCES:
patent: 2639393 (1953-05-01), Birt et al.
patent: 4323865 (1982-04-01), Tanaka et al.
patent: 4656385 (1987-04-01), Tanaka
patent: 4684843 (1987-08-01), Ohya et al.

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