Planar dielectric resonator dual-mode filter

Details Planar dielectric resonator dual-mode filter Planar dielectric resonator dual-mode filter

H - Electricity

01

P

333/69

H01P 1/208 (2006.01)

Patent

CA 1194160

ABSTRACT A bandpass filter has a plurality of cascade cavities that operate in a dual-mode and are mounted in a planar relationship to one another. Each cavity contains a dielectric resonator and resonates at its resonant frequency in two HE11.delta. modes. An iris is located between adjacent cavities and contains an aperture that can independently control inter-cavity coupling. The dielectric resonator is cylindrical in shape and an adjustable metallic plunger is located in a wall of each cavity so that the cavity can be tuned over a relatively broad range. The filter has good mechanical and thermal stability as well as being extremely flexible in the arrangement of cavities.

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