Dielectric block apparatus having two opposing coaxial resonator

Details Dielectric block apparatus having two opposing coaxial resonator Dielectric block apparatus having two opposing coaxial resonator

1995-02-17

1996-10-08

Lee, Benny

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333222, H01P 1202

Patent

active

055635610

ABSTRACT:
A compact multi-stage dielectric resonator apparatus is formed either by placing two or more axially elongated inner conductors axially separated from each other inside a throughhole through a dielectric block such that the mutually separated inner conductors are coupled capacitively across an electrode-free region which separates them and a multi-stage resonator is thereby formed, or by attaching a plurality of single-stage dielectric resonators to such a multi-stage resonator to form a unistructural apparatus. Each of these single-stage dielectric resonators has a dielectric block with a throughhole containing an axially extending inner conductor. Outer surfaces of the resonators are substantially entirely covered by outer conductors but openings in the outer conductor and coupling-providing conductors insulated from and entirely surrounded by the outer conductor are provided for magnetically and electrostatically coupling the resonators which are attached together. Signal input-output terminals separated from and surrounded by the outer conductors may also be provided for easy mounting of the apparatus on a circuit board.

REFERENCES:
patent: 4151494 (1979-04-01), Nishikawa et al.
patent: 4245198 (1981-01-01), Nishikawa et al.
Hano et al., "A Bandpass Filter Using Direct-Coupled Quarter Wavelength Coaxial Dielectric Resonators," Microwave Journal, Nov. 1987, pp. 141-160.

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