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:
May. 25, 2004
Filed:
Jul. 12, 2001
Yuichi Shimizu, Fukushima-ken, JP;
Nobuhiko Suzuki, Kanagawa-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
An electronic circuit unit having a circulator is formed of a circuit board made by laminating a plurality of dielectric substrates; first, second, and third central conductors disposed at intervals of 120 degrees on a plurality of dielectric substrates and partially intersecting in the upper and lower directions; a magnet and a ferrite member disposed above and below the intersection of the central conductors; a first yoke covering the outside of the magnet; and a second yoke covering the outside of the ferrite member. One end of each of the central conductors serves as an input and output terminal, and the ends are disposed at intervals of 120 degrees. Adjacent input and output terminals are connected by inductive elements.