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:
Mar. 27, 2001

Filed:

May. 11, 1999
Applicant:
Inventors:

Yutaka Ishiura, Kyoto, JP;

Hiromu Tokudera, Nagaokakyo, JP;

Katsuyuki Ohira, Otsu, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01P 1/32 ; H01P 3/16 ;
U.S. Cl.
CPC ...
H01P 1/32 ; H01P 3/16 ;
Abstract

A dielectric wave guide nonreciprocal circuit device wherein the efficiency of applying a DC magnetic field to ferrite plates is increased, the effect on other components of magnetic field leakage from magnets is reduced, and changes in the DC magnetic field, when other magnetic bodies are nearby, are reduced. The dielectric wave guide has dielectric strips clasped between conductive plates. Ferrite plates are provided at a center portion where the dielectric strips converge. Magnets are provided in concavities formed in outer sides of the conductive plates. A closed magnetic path is formed by surrounding the whole structure with magnetic members having side walls.


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