Dielectric filter with a unitary external coupling device couple

Details Dielectric filter with a unitary external coupling device couple Dielectric filter with a unitary external coupling device couple

1998-09-03

2000-06-27

Pascal, Robert

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

3332191, 333230, H01P 1201

Patent

active

060811730

ABSTRACT:
A dielectric filter utilizing a plurality of serially coupled resonators having attenuation maximums at the lower side or higher side, or both, of a pass band frequency region. The filter may include an input element which is coupled with both of a first resonator and a second resonator, and may also include an output element which is coupled with both the last and the next-to-last resonator. In the dielectric filter, it is not necessary to provide an external wire connection to generate such attenuation maximums.

REFERENCES:
patent: 4642591 (1987-02-01), Kobayashi
patent: 4996506 (1991-02-01), Ishikawa et al.
patent: 5831496 (1998-11-01), Sonoda et al.

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