Dielectric resonator

Details Dielectric resonator Dielectric resonator

1997-02-06

1998-08-18

Ham, Seungsook

Wave transmission lines and networks

Resonators

Dielectric type

333235, H01P 710

Patent

active

057963207

ABSTRACT:
A dielectric resonator includes a cylindrical hole formed in the intersection of two resonator elements forming a TM dual-mode dielectric resonator element. The hole extends in a direction across the thickness of the TM dual-mode dielectric resonator element. Furthermore, a quadrangular pyramid-shaped hole having a closed end is formed in each connecting part between each resonator element and a cavity wall so manner that each hole extends from the outer surface of the cavity wall toward the inner portion of each resonator element, wherein the inner wall of each hole is covered with a conductor electrically connected to a cavity conductor. The shapes of the above holes are determined so that the TM dual-mode dielectric resonator element has the same resonance frequency for both TM 110 and TM 111-modes. The above arrangement makes it possible to provide a low-cost high-performance dielectric resonator having characteristics similar to those of a three-mode dielectric resonator, which can be produced in a small overall size.

REFERENCES:
patent: 4642591 (1987-02-01), Kobayashi
patent: 5638037 (1997-06-01), Kurisu et al.
patent: 5642085 (1997-06-01), Abe et al.
Patent Abstracts Of Japan, vol. 17, No. 115 (E-1330), Mar. 10, 1993 & JP 04 296104 A, Oct. 28, 1992.
Y. Ishikawa, et al., "800 MHz High Power Duplexer Using TM Dual Mode Dielectric Resonators", International Microwave Symposium Digest, vol. 3, Jun. 1992.

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