Piezoelectric filter stage selectably connectable in series with

Details Piezoelectric filter stage selectably connectable in series with Piezoelectric filter stage selectably connectable in series with

1991-03-29

1992-11-10

LaRoche, Eugene R.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

333189, H03H 946

Patent

active

051627590

ABSTRACT:
A band-pass filter includes a first filter, a second filter, and switching elements. The first filter is constituted by a plurality of filter elements. The second filter is constituted by a plurality of filter means and connected in series with the first filter. The switching elements can short-circuit either one of the first and second filters.

REFERENCES:
patent: 3469213 (1969-09-01), Baker
patent: 3526858 (1970-09-01), Heinlein et al.
patent: 3566312 (1971-02-01), McDonald
patent: 3886316 (1975-05-01), Getgen
patent: 4378538 (1983-03-01), Gignoux
patent: 5019794 (1991-05-01), Letessier et al.

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