Wave transmission lines and networks – Coupling networks – Wave filters including long line elements
Patent
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.
Giraudeau Patrick
Rousseau Philippe
"Thomson-CSF"
Lee Benny
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