Non-reciprocal circuit element and communication device

Details Non-reciprocal circuit element and communication device Non-reciprocal circuit element and communication device

2008-01-15

2008-01-15

Jones, Stephen E. (Department: 2817)

Wave transmission lines and networks

Plural channel systems

Nonreciprocal gyromagnetic type

C333S024200

Reexamination Certificate

active

07319369

ABSTRACT:
A non-reciprocal circuit element includes permanent magnets, a ferrite having center electrodes, a circuit substrate on which the permanent magnets and the ferrite are disposed, and an annular yoke. The circuit substrate has substantially rectangular surfaces. The permanent magnets and the ferrite are disposed on a front surface of the circuit substrate. The permanent magnets and the ferrite have principal surfaces that are disposed facing each other and are substantially perpendicular to the front surface of the circuit substrate. The permanent magnets and the ferrite have longitudinal sides that are substantially parallel to longitudinal edges of the circuit substrate.

REFERENCES:
patent: 6522216 (2003-02-01), Makino et al.
patent: 2002/0033742 (2002-03-01), Makino et al.
patent: 2006/0158279 (2006-07-01), Kinoshita
patent: 03-206701 (1991-09-01), None
patent: 08-070195 (1996-03-01), None
patent: 2000-156601 (2000-06-01), None
patent: 2002-026615 (2002-01-01), None
patent: 2002-198707 (2002-07-01), None
patent: 2003-101310 (2003-04-01), None
Official Communication for PCT Application No. PCT/JP2006/321728; mailed Feb. 6, 2007.

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