Ladder-type ceramic filter

Details Ladder-type ceramic filter Ladder-type ceramic filter

1988-07-19

1989-06-06

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

333190, H03H 958

Patent

active

048375330

ABSTRACT:
A ladder-type ceramic filter formed of a plurality of series and parallel resonators arranged in series and in parallel between the input and output terminals. In this filter, resonators are arranged in a manner that a resonator (or resonators) in which each difference between resonant and antiresonant frequencies thereof is minimum is (or are) positioned in the center of the resonator arrangement, and that resonators in which respective differences between resonant and antiresonant frequencies thereof are a larger value or values are positioned on the sides of the input and output terminals, respectively.

REFERENCES:
patent: 3460073 (1969-08-01), Thelen

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