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:
Oct. 07, 2008
Filed:
Jan. 28, 2008
Takashi Kawanami, Kanazawa, JP;
Takashi Kawanami, Kanazawa, JP;
Murata Manufacturing Co., Ltd, Kyoto, JP;
Abstract
An isolator includes five center electrodes coupled at radio frequencies to a ferrite member to which a DC bias magnetic field is applied from a permanent magnet. First and third electrodes do not intersect each other. The first and third electrodes intersect the second, fourth and fifth electrodes with electrical insulation therebetween. Connection is established so that a magnetic field generated when current flows from one end to the other end of the first electrode and a magnetic field generated when current flows from one end to the other end of the third electrode are in phase and in the same direction. Connection is established so that a magnetic field generated when current flows from one end to the other end of the second electrode, a magnetic field generated when current flows from one end to the other end of the fourth electrode, and a magnetic field generated when current flows from one end to the other end of the fifth electrode are in phase and in the same direction. The one end of the first electrode and the other end of the third electrode define balanced input ports, and the one end of the fourth electrode defines an unbalanced output port.