The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jul. 20, 1999

Filed:

Jan. 13, 1998
Applicant:
Inventors:

Katuyuki Ohira, Ohtsu, JP;

Yutaka Ishiura, Kyoto, JP;

Hiromu Tokudera, Nagaokakyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01P / ;
U.S. Cl.
CPC ...
333-11 ; 333 242 ;
Abstract

A nonreciprocal circuit device with a plurality of central conductors each formed of a respective plurality of laminated strip conductors extending in the same direction. The central conductors overlap with each other at a specified angle. A ferrite is disposed where the central conductors overlap, and a DC magnetic field is applied to the overlapping portion. The strip conductors constituting two central conductors among the plurality of central conductors may be alternately laminated. Or, the strip conductors constituting one central conductor may sandwich those of another central conductor, to achieve strong electromagnetic coupling.


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