Dielectric microwave filter

Details Dielectric microwave filter Dielectric microwave filter

1996-09-12

1999-08-10

Ham, Seungsook

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333206, H01P 120, H01P 1205

Patent

active

059364890

ABSTRACT:
A dielectric microwave filter includes a dielectric body, a trinity of first, second and third resonant slots, a pair of cavities for transmitting input/output signals, a pair of slits, and a trinity of first, second and third resonant holes. Each of the resonant slots (and an associated resonant hole in some embodiments) functions as a resonator having a quarter wavelength. Each of the slits modulates a coupling of electromagnetic fields among the resonant slots (and resonant holes if present). All surfaces of the dielectric microwave filter are completely covered with an electrically conducting material, except for front and top surfaces of the dielectric body. Since the resonators having a quarter wavelength may have reduced surface dimensions, the filter may accommodate associated surface input/output coupling cavities and also be more easily manufactured in a miniaturized structure. In addition, since the filter provides inductive coupling between resonators, it may better preserve a desired overall filter performance.

REFERENCES:
patent: 5486799 (1996-01-01), Komazaki et al.
patent: 5512866 (1996-04-01), Vangala et al.

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