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:
Dec. 11, 2007
Filed:
Jun. 21, 2005
Rina Kaji, Chuo-ku, JP;
Akifumi Kamijima, Chuo-ku, JP;
Susumu Aoki, Chuo-ku, JP;
Kenji Takeo, Chuo-ku, JP;
Yoshikazu Sato, Chuo-ku, JP;
Rina Kaji, Chuo-ku, JP;
Akifumi Kamijima, Chuo-ku, JP;
Susumu Aoki, Chuo-ku, JP;
Kenji Takeo, Chuo-ku, JP;
Yoshikazu Sato, Chuo-ku, JP;
TDK Corporation, Tokyo, JP;
Abstract
The present invention provides a coil structure capable of improving a differential transmission characteristic by reducing capacitance as much as possible. A common mode choke coil is constructed so that a section of each of two coil patterns constructing a thin film coil has an inverted trapezoid shape which is bilaterally asymmetrical. Because of the structural characteristic that the section of each of the two coil patterns has an inverted trapezoid shape which is bilaterally asymmetrical, the facing area of the two coil patterns contributing to capacitance is minimized. Thus, the capacitance of the thin film coil can be reduced as much as possible.