Non-reciprocal circuit element

Details Non-reciprocal circuit element Non-reciprocal circuit element

2009-07-01

2010-10-05

Jones, Stephen E (Department: 2817)

Wave transmission lines and networks

Coupling networks

Nonreciprocal gyromagnetic type

C333S001100

Reexamination Certificate

active

07808339

ABSTRACT:
A non-reciprocal circuit element (for example, a 2-port isolator) includes a tabular yoke, permanent magnets, a ferrite to which a direct current magnetic field is applied from the permanent magnets, a first center electrode and a second center electrode disposed on the ferrite, and a circuit board. The tabular yoke is disposed on the upper surface of a ferrite magnet assembly with a dielectric layer therebetween. For example, the dielectric layer could be an adhesive agent layer made of an epoxy-based resin. The above arrangement provides a non-reciprocal circuit element having a simplified structure, a stable electrical characteristic, and a high reliability is provided.

REFERENCES:
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Official Communication issued in International Patent Application No. PCT/JP2007/072477, mailed on Jan. 29, 2008.

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