Ceramic band-stop filter

Details Ceramic band-stop filter Ceramic band-stop filter

1992-03-31

1994-04-26

Ham, Seungsook

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333206, H01P 1205

Patent

active

053070364

ABSTRACT:
In order to provide a sufficient isolation between the resonators of a band-stop filter, prior art band-stop filters must be manufactured from separate ceramic resonator blocks. According to the invention the band-stop filter can be manufactured in a single ceramic block (1), having on one side surface strip-like areas (14; 15) of electrically conducting material extending perpendicularly from the bottom edge to the top edge and being located in the area between the resonators (A and B, B and C) and having dimensions selected so that they substantially cancel the electric and magnetic field between the resonators. If necessary, the coupling between the resonators can be adjusted by changing the width of the strip-like areas (14; 15) or by providing them with discontinuities.

REFERENCES:
patent: 4028652 (1977-06-01), Wakino et al.
patent: 4255729 (1981-03-01), Fukasawa et al.
patent: 4423396 (1983-12-01), Makimoto et al.
patent: 4431977 (1984-02-01), Sokola et al.
patent: 4559508 (1985-12-01), Nishikawa et al.
patent: 4692726 (1987-09-01), Green et al.
patent: 4703291 (1987-10-01), Nishikawa et al.
patent: 4716391 (1987-12-01), Moutrie et al.
patent: 4740765 (1988-04-01), Ishikawa et al.
patent: 4742562 (1988-05-01), Kommrusch
patent: 4761624 (1988-08-01), Igarashi et al.
patent: 4800347 (1989-01-01), Yorita et al.
patent: 4800348 (1989-01-01), Rosar et al.
patent: 4821006 (1989-04-01), Ishikawa et al.
patent: 4823098 (1989-04-01), DeMuro et al.
patent: 4829274 (1989-05-01), Green et al.
patent: 4879533 (1989-11-01), de Muro et al.
patent: 4896124 (1990-01-01), Schwent
patent: 4954796 (1990-09-01), Green et al.
patent: 4965537 (1990-10-01), Kommrusch
patent: 5097236 (1992-03-01), Wakino et al.
patent: 5103197 (1992-04-01), Turunen et al.
patent: 5109536 (1992-04-01), Kommrusch
Matthaei et al., Microwave Filters, Impedance--Mathing Networks and Coupling Structures, McGraw-Hill, pp. 497-506 & 733-737 (1964).
Nagle, High Frequency Diversity Receiver From the 1930's, Ham Radio, pp. 34-43 (Apr., 1990).
Patent Abstracts of Japan--vol. 14, No. 297, (E-945) Jun. 27, 1990 & JP-A-094 901 (Toko Inc.) Apr. 5, 1990.
Patent Abstracts of Japan--Vol. 7, No. 292 (E-219)(1437) Dec. 27, 1983 & JP-A-58-168 302 (Fujitsu K.K.) Oct. 4, 1983.
Patent Abstracts of Japan--vol. 5, No. 11 (E-42)(683) Jan. 23, 1981 & JP-A-55 141 802 (Alps Denki K.K.) Nov. 6, 1980.
Patent Abstracts of Japan--vol. 12, No. 106 (E-596)(2953) Apr. 6, 1988 & JP-A-62 235 801 (Fuji Electrochem Co. Ltd.) Oct. 16, 1987.

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