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:
Nov. 09, 2010
Filed:
Feb. 05, 2010
Nobumasa Kitamori, Nagaokakyo, JP;
Takashi Hasegawa, Omihachiman, JP;
Nobumasa Kitamori, Nagaokakyo, JP;
Takashi Hasegawa, Omihachiman, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
A non-reciprocal circuit device capable of preventing and minimizing disturbances in magnetic field distribution in a ferrite to thereby improve insertion loss characteristics and isolation characteristics includes a ferrite to which a DC magnetic field is applied by permanent magnets and first and second center electrodes disposed on the ferrite. A conductive material is embedded in a recess provided in an end surface of the ferrite that is perpendicular or substantially perpendicular to the first and second principal surfaces of the ferrite, and the first and second center electrodes are electrically connected to the conductive material to define a circuit. Opening portions of the recess facing the first and second principal surfaces are arranged such that the opening portion at a downstream side of a direction of application of the DC magnetic field by the permanent magnets is larger than the opening portion at an upstream side thereof.