Dielectric resonator apparatus having adjustable external struct

Details Dielectric resonator apparatus having adjustable external struct Dielectric resonator apparatus having adjustable external struct

1994-12-15

1996-07-23

Lee, Benny

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333222, H01P 1205

Patent

active

055393632

ABSTRACT:
A dielectric resonator apparatus contains coaxial resonators in a dielectric block made of a dielectric material, having a first end surface, a second end surface and a plurality of side surfaces therebetween. The block is formed with resonator-forming throughholes penetrating therethrough and having openings on the first and second end surfaces. Inner conductors are formed inside these resonator-forming throughholes, and an outer conductor is formed at least on the side surfaces and the first end surface. A molded resin member made of a dielectric resin material, having pin-accepting holes therethrough, is attached to the resonator-forming throughholes. Input/output terminals are formed on the molded resin member so as to be insulated from the inner and outer conductors. Metallic pins are inserted into the pin-accepting holes to thereby contact the input-output terminals and to provide external-connection capacitance with the inner conductors. A conductive film is formed at least on the second end surface or the molded resin member for preventing electromagnetic waves from leaking outside. Functional characteristics of such an apparatus can be adjusted by controlling the external-connection capacitance by varying the distance by which the metallic pins are inserted into the pin-accepting holes.

REFERENCES:
patent: 5345202 (1994-09-01), Kobayashi et al.
patent: 5379012 (1995-01-01), Shimizu et al.

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