Dual-mode filters using dielectric resonators with apertures

Details Dual-mode filters using dielectric resonators with apertures Dual-mode filters using dielectric resonators with apertures

1991-11-19

1993-04-06

Dzierzynski, Paul M.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

3332191, 333212, H01P 120, H01P 710

Patent

active

052007219

ABSTRACT:
A dual-mode filter has a dielectric resonator in each cavity, with each resonator containing one or more apertures. The aperture or apertures are located to shift a resonance frequency of a spurious mode to a higher frequency range distance from a principal mode. The principal mode can be an HEH.sub.11 mode and the spurious mode can be an HEE.sub.11 mode or vice-versa. The dielectric resonators can be a solid block or two or more discs that are laminated to one another. Previous dual-mode filters cannot attain the results required for current satellite systems.

REFERENCES:
patent: 4028652 (1977-06-01), Wakino et al.
patent: 4630012 (1986-12-01), Fuller et al.
patent: 4652843 (1987-03-01), Tang et al.
patent: 4706052 (1987-11-01), Hattori et al.
patent: 5059929 (1991-10-01), Tanaka
Zaki et al. "New Results in Dielectric-Loaded Resonators", IEEE Trans. on Microwave Theory & Tech. vol. MTT-34, No. 7, Jul. 1986, pp. 815-824.

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