Dielectric filter with attenuation poles

Wave transmission lines and networks – Coupling networks – Wave filters including long line elements

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333205, H01P 1203

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active

051929260

ABSTRACT:
A first dielectric block or blocks have a cut out portion and the cut out space is filled with a second dielectric block. A bypass pattern is formed on the second dielectric block and is capacitively coupled with two resonance elements formed on the first dielectric block or blocks. the dielectric filter is compact, and the position and intensity of attenuation poles can be freely designed and easily adjusted.

REFERENCES:
patent: 4418324 (1983-11-01), Higgins
patent: 4423396 (1983-12-01), Makimoto et al.
patent: 4703291 (1987-10-01), Nishikawa et al.
patent: 4757286 (1988-07-01), Konishi et al.
1988 IEEE International Symposium on Circuits and Systems, Jun. 7-9, 1988, Espoo, FI, IEEE, New York, U.S., 1988, "Suspended Substrate Strip Line Filters with Flat Delay", I. H. Zabalawi, pp. 2777-2780.
Frequenz, vol. 34, No. 3, Mar. 1980, Berlin, Del., "Cauerparameter-Bandpasse in Mikrostreifenleiter-Technik", H. Fechner, pp. 78-89.

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