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.
Patent No.:
Date of Patent:
Mar. 01, 2005
Filed:
Aug. 06, 2003
Yuichi Shimizu, Fukushima-ken, JP;
Yuichi Shimizu, Fukushima-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
An irreversible circuit device with small insertion loss and excellent isolation is to be provided. An irreversible circuit device according to the invention has a flat plate shaped ferrite member and first, second and third central conductors placed on the ferrite member. In the central conductors, second conductor parts are placed on the ferrite member as input or output first conductor parts are placed on notch parts of the ferrite member. Therefore, when a magnetic flux passes through V-shaped extension parts as a magnetic path, the current generation is reduced and the energy transmission is increased in the first conductor part placed therebetween. Consequently, the insertion loss is reduced, and the isolation becomes excellent.