Resonator, filter, nonreciprocal circuit device, and...

Details Resonator, filter, nonreciprocal circuit device, and... Resonator, filter, nonreciprocal circuit device, and...

2004-08-26

2008-12-30

Jones, Stephen E (Department: 2817)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

C333S001100, C333S202000

Reexamination Certificate

active

07471173

ABSTRACT:
A dielectric substrate is provided with first and second conductor openings communicating with each other via a first slit, and third and fourth conductor openings communicating with each other via a second slit, and the slits intersect each other. With this structure, two resonant modes including an even mode in which magnetic field vectors are directed from the first to third conductor openings and from the fourth to second conductor openings, and an odd mode in which magnetic field vectors are directed from the third to second conductor openings and from the first to fourth conductor openings, or two resonant modes including an X mode in which magnetic field vectors are directed from the first to second conductor openings, and a Y mode in which magnetic field vectors are directed from the third to fourth conductor openings are generated.

REFERENCES:
patent: 5805034 (1998-09-01), Evans et al.
patent: 6472960 (2002-10-01), Ishikawa et al.
patent: 6762655 (2004-07-01), Wichern
patent: 2003/0201941 (2003-10-01), Aikawa et al.
patent: 08-059210 (1996-10-01), None
patent: 2001-85935 (2001-03-01), None
patent: 2001-203513 (2001-07-01), None
patent: 2002-9515 (2002-01-01), None
patent: 2003-142919 (2003-05-01), None
International Search Report PCT/JP2004/012260, Sep. 9, 2004.

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