Dual-mode filters using dielectric resonators with apertures
AssigneeCom Dev Ltd.
InventorRaafat R. Mansour
Life of this patent
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Abstract
A dual-mode filter has a dielectric resonator in each cavity, with each resonator containing one or more apertures. The aperture or apertures are located to shift a resonance frequency of a spurious mode to a higher frequency range distance from a principal mode. The principal mode can be an HEH.sub.11 mode and the spurious mode can be an HEE.sub.11 mode or vice-versa. The dielectric resonators can be a solid block or two or more discs that are laminated to one another. Previous dual-mode filters cannot attain the results required for current satellite systems.
Claims16
A dual-mode filter comprising at least one cavity resonating in a dual-mode, said at least one cavity containing a dielectric resonator, said resonator containing at least one aperture, said at least one aperture extending partially through said resonator and being sized and located to shift a resonance frequency of a spurious mode to a higher frequency range distance from a principal mode.
Dependencies are inferred from the claim text.