Dielectric resonator having an elongated non-conductive resonato

Details Dielectric resonator having an elongated non-conductive resonato Dielectric resonator having an elongated non-conductive resonato

1994-12-19

1998-09-29

Lee, Benny T.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333206, 333207, 333222, 333223, H01P 1205

Patent

active

058150560

ABSTRACT:
In a dielectric resonator, through holes are formed between opposing two surfaces of a dielectric block, an outer conductor is provided on an outer peripheral surface of the dielectric block, and a plurality of inner conductors are formed on the inner surfaces of the through holes, isolated by non-conducting portions where the inner conductor is not provided. Near the open end of the inner conductor of the resonator hole, a non-conducting portion is formed by partially removing the inner conductor in the axial direction, at a position opposing to an adjacent through hole, or a position near the outer conductor, so as to increase odd mode or even mode characteristic impedance near the open end, whereby inductive coupling is adjustable.

REFERENCES:
patent: 4800348 (1989-01-01), Rosar et al.
patent: 5162760 (1992-11-01), Phillips et al.
patent: 5175520 (1992-12-01), Inoue
patent: 5406236 (1995-04-01), Newell et al.
Patent Abstracts of Japan, vol. 12, No. 379 (E-667) (3226), Oct. 11, 1988; JP-A-63 127 605 (Toko Inc) May 31, 1988.
Patent Abstracts of Japan, vol. 12, No. 379 (E-667) (3226), Oct. 11, 1988; JP-A-63 127 606 (Toko Inc) May 31, 1988.
Patent Abstracts of Japan, vol. 17, No. 599 (E-1455), Nov. 2, 1993; JP-A-05 183 308 (Uniden Corp) Jul. 23, 1993.
Soviet Inventions Illustrated, Section EI, Week C45, Dec. 17, 1980, Derwent Publications, Ltd., London, GB; Class W02, AN K8456 C/45; SU-A-723 701 (Batalov) Mar. 28, 1980.
European Search Report dated Mar. 30, 1995.

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