Nonreciprocal circuit device

Details Nonreciprocal circuit device Nonreciprocal circuit device

2011-03-29

2011-03-29

Jones, Stephen E (Department: 2817)

Wave transmission lines and networks

Plural channel systems

Nonreciprocal gyromagnetic type

C333S024200

Reexamination Certificate

active

07915971

ABSTRACT:
A nonreciprocal circuit device includes a ferrite-magnet element having ferrite provided with first and second central electrodes intersecting each other in an insulated manner and two permanent magnets arranged to sandwich the ferrite to apply a DC magnetic field thereto, a substrate on which the ferrite-magnet element and matching circuit elements are mounted, and a flat plate yoke. A first resin layer made of a cured liquid resin is provided at bonding portions of the ferrite-magnet element to the substrate, and a second resin layer made of a cured soft sheet-shaped resin adhered to a rear surface of the flat plate yoke is provided around the ferrite-magnet element and the matching circuit elements.

REFERENCES:
patent: 6559732 (2003-05-01), Makino et al.
patent: 2002/0033742 (2002-03-01), Makino et al.
patent: 2007/0063784 (2007-03-01), Kawanami
patent: 2007/0236304 (2007-10-01), Kawanami
patent: 2002-198707 (2002-07-01), None
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patent: 2004-328476 (2004-11-01), None
patent: 2006-238286 (2006-09-01), None
patent: 2008-092147 (2008-04-01), None
patent: 2008-119693 (2008-05-01), None
patent: 2006/093039 (2006-09-01), None
patent: 2007/046229 (2007-04-01), None
Official Communication issued in corresponding Japanese Patent Application No. 2008-119693, mailed on Apr. 13, 2010.

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