Filter having elements with distributed constants which associat

Details Filter having elements with distributed constants which associat Filter having elements with distributed constants which associat

1988-03-30

1991-02-12

Lee, Benny

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333219, H01P 1203

Patent

active

049927590

ABSTRACT:
A filter having elements with distributed constants is made up of resonators providing two different types of coupling. The use of two types of coupling makes it possible to obtain the desired geometry and in particular to limit the coupling between variable capacitors in the construction of combline filters as well as the construction of filters having two transmission zeros and involving the use of hairpin resonators.

REFERENCES:
patent: 3504618 (1970-04-01), McKee
patent: 4418324 (1983-11-01), Higgins
patent: 4423396 (1983-12-01), Makimoto et al.
patent: 4701727 (1987-10-01), Wong
patent: 4731596 (1988-03-01), Cruchon et al.
patent: 4740765 (1988-04-01), Ishikawa et al.
Patent Abstracts of Japan, vol. 10, No. 27 (E-378) [2084], Feb. 4, 1986, JP-A-60 185 402 (Nippon Denki K.K.) 9/20/1985.

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