Half wavelengh and quarter wavelength dielectric resonators coup

Details Half wavelengh and quarter wavelength dielectric resonators coup Half wavelengh and quarter wavelength dielectric resonators coup

1995-02-17

1996-09-17

Lee, Benny

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333222, H01P 1202

Patent

active

055572464

ABSTRACT:
A compact multi-stage dielectric resonator apparatus is formed by attaching together many dielectric resonators having different resonant frequencies. Each of these dielectric resonators has a dielectric block with a throughhole containing an axially extending inner conductor. The length of the inner conductor for each resonator is either about one-quarter or one-half wavelength of the corresponding resonant frequency. Outer surfaces of the resonators are substantially entirely covered by outer conductors but openings and/or coupling-providing conductors insulated from and entirely surrounded by the outer conductor are provided for magnetically and/or electrostatically coupling the resonators which are attached together. Signal input-output terminals may also be provided separated from and surrounded by the outer conductors for easy mounting of the apparatus on a circuit board.

REFERENCES:
patent: 4223287 (1980-09-01), Nishikawa et al.
patent: 5130683 (1992-07-01), Agahi-Kesheh et al.

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