Wave transmission lines and networks – Coupling networks – Wave filters including long line elements
Patent
1996-12-11
1999-06-15
Ham, Seungsook
Wave transmission lines and networks
Coupling networks
Wave filters including long line elements
333222, H01P 1205
Patent
active
059126035
ABSTRACT:
A dielectric filter includes: a dielectric block having a pair of opposing end faces; a through-hole formed between the pair of opposing end faces of the dielectric block; an inner conductor formed on the inner surface of the through-hole, the inner conductor being open-circuited at both its ends; an outer conductor formed on the outer surface of the dielectric block; and a connection conductor by which a central part of the inner conductor between its two opposing ends is connected to the outer conductor. Although the dielectric filter is composed of the single dielectric block, it behaves as a band-elimination filter having pass-bands around the elimination-band centered at a trap frequency wherein elimination occurs at both edges of the pass-bands.
REFERENCES:
patent: 4151494 (1979-04-01), Nishikawa et al.
patent: 5130683 (1992-07-01), Agahi-Kesheh et al.
patent: 5489882 (1996-02-01), Ueno
patent: 5525946 (1996-06-01), Tsujiguchi et al.
patent: 5712604 (1998-01-01), Tada et al.
Patents Abstracts of Japan-E-1257 Sep. 2, 1992, vol. 16/No. 415.
Ogura Hiromi
Tada Hitoshi
Ham Seungsook
Murata Manufacturing Co. Ltd.
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