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:
Apr. 29, 2008
Filed:
Oct. 20, 2004
Shigeru Takeda, Kumagaya, JP;
Hideto Mikami, Kumagaya, JP;
Koji Ichikawa, Saitama, JP;
Hitachi Metals, Ltd., Tokyo, JP;
Abstract
A non-reciprocal element with three central conductors and a communication apparatus are disclosed, in which the insertion loss is small and the bandwidth is wide. Three central conductors are arranged in proximity to a ferrite thin plate in such a manner as to cross each other in a mutually electrically insulated state. A static magnetic field is applied to the ferrite thin plate by a permanent magnet. An end each of the three central conductors makes up three input/output terminals, respectively, and the other end thereof is connected to a common portion. Three matching capacitors are connected between an end each of the three input/output terminals, respectively, and the common portion. At least one of the angle between the first and second central conductors and the angle between the second and third central conductors is not more than 90 degrees.