Microwave filter with means for coupling degenerate modes

Wave transmission lines and networks – Coupling networks – Wave filters including long line elements

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333212, 333 99005, H01P 1208

Patent

active

060669969

ABSTRACT:
A microwave filter has at least two resonators, with at least two degenerated wave types resonance-capable in one resonator. The resonators are in operative connection with one another so that possible couplings of the degenerated wave types are only overcouplings and these overcouplings are located outside the resonator in which the two degenerated wave types are resonance-capable. As a result, the microwave filter has higher quality, improved selection properties and optimal polarization adapation.

REFERENCES:
patent: 2795763 (1957-06-01), Tillotson
patent: 4734665 (1988-03-01), Rosenberg et al.
patent: 4760361 (1988-07-01), Kobayashi
patent: 4772863 (1988-09-01), Rosenberg et al.
patent: 5083102 (1992-01-01), Zaki
patent: 5498171 (1996-03-01), Mansoor et al.

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