Dielectric resonator filter

Details Dielectric resonator filter Dielectric resonator filter

2005-03-01

2005-03-01

Pascal, Robert (Department: 2817)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

C333S235000

Reexamination Certificate

active

06861928

ABSTRACT:
A dielectric resonator filter comprises dielectric resonators, an enclosure having a main body, a lid, and partition walls, interstage-coupling tuning windows, interstage-coupling tuning bolts, input/output terminals, and input/output coupling probes. Resonance-frequency tuning members each composed of a conductor plate and a bolt coupled integrally thereto are attached to the enclosure lid. Undesired-mode suppressing means such as rings attached to the bolts of the resonance-frequency tuning members or bolts attached to the conductor plates or to the enclosure lid are disposed in an undesired-mode excitation space, whereby the occurrence of a disturbed characteristic in the pass band (or stop band) is suppressed.

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Wang, Chi et al.; “Mixed Modes Cylindrical Planar Dielectric Resonator Filters with Rectangular Enlosure”; IEEE Transactions on Microwave Theory and Techniques; Dec. 1995; No. 12, Part 2; New York, US; pp. 2817-2823.

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