Wave transmission lines and networks – Coupling networks – Nonreciprocal gyromagnetic type
Reexamination Certificate
2007-06-04
2008-09-02
Jones, Stephen E (Department: 2817)
Wave transmission lines and networks
Coupling networks
Nonreciprocal gyromagnetic type
C333S001100
Reexamination Certificate
active
07420435
ABSTRACT:
A non-reciprocal circuit element is equipped with a ferrite-magnet assembly which includes a pair of permanent magnets and a ferrite sandwiched between the permanent magnets. A first center electrode and a second center electrode defined by conducting films are provided on principal surfaces of the ferrite, such that the first center electrode and the second center electrode are insulated from each other and intersect each other. The permanent magnets have principal surfaces having substantially the same shape as the principal surfaces of the ferrite. The ferrite has upper and lower surfaces provided with recesses. The recesses have a conductor material embedded therein, whereby intermediate electrodes and connector electrodes are provided.
REFERENCES:
patent: 2002/0079981 (2002-06-01), Tanaka
patent: 2004/0263278 (2004-12-01), Hino
patent: 2002-076711 (2002-03-01), None
patent: 2005-020195 (2005-01-01), None
Official Communication for PCT Application No. PCT/JP2006/319568; mailed on Dec. 19, 2006.
Jones Stephen E
Murata Manufacturing Co. Ltd.
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