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. 03, 2007
Filed:
Mar. 06, 2006
Mitsunari Suzuki, Tokyo, JP;
Noriyuki Hirabayashi, Tokyo, JP;
Yoshihiro Saitoh, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A noise suppressor capable of obtaining a favorable attenuation characteristic even in the case where a plurality of inductors on a conductive wire are magnetically coupled to each other. The noise suppressor includes a first inductor and a second inductor which are magnetically coupled to each other on a first conductive wire, a third inductor having one end connected to the other end of a first capacitor and the other end of a second capacitor and the other end connected to ground, and a fourth inductor and a fifth inductor which are magnetically coupled to each other on a second conductive wire. While it is considered that the coupling coefficients kthrough kbetween the inductors are smaller than 1 in reality, in particular, on the basis of the condition that the coupling coefficients Kthrough kare smaller than 1, the inductance of the third inductor is set to a value corresponding to the actual values of the coupling coefficients kthrough kso as to obtain a desired noise attenuation characteristic.