Nonreciprocal circuit device

Details Nonreciprocal circuit device Nonreciprocal circuit device

2010-05-19

2010-11-02

Jones, Stephen E (Department: 2817)

Wave transmission lines and networks

Coupling networks

Nonreciprocal gyromagnetic type

C333S001100

Reexamination Certificate

active

07825744

ABSTRACT:
A nonreciprocal circuit device attenuates unnecessary waves having a higher frequency than that of a fundamental wave, without increasing insertion loss. The nonreciprocal circuit device in the form of a 2-port type isolator includes a ferrite on which a first central electrode and a second central electrode are arranged to cross each other and so as to be electrically insulated from each other. A bypass circuit including a phase shifter and a filter is provided between an input port and an output port, and the bypass circuit does not allow signals in the fundamental wave band to pass through and also attenuates harmonics.

REFERENCES:
patent: 6262639 (2001-07-01), Shu et al.
patent: 7737801 (2010-06-01), Kishimoto
patent: 2007/0030089 (2007-02-01), Hino
patent: 2000-031706 (2000-01-01), None
patent: 2006-033482 (2006-02-01), None
patent: 2006-211373 (2006-08-01), None
patent: 2006/080172 (2006-08-01), None
Official Communication issued in International Patent Application No. PCT/JP2009/054253, mailed on Jun.16, 2009.

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