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:
Jan. 22, 2008
Filed:
Jan. 31, 2006
Qiang Richard Chen, Phoenix, AZ (US);
Hajime Kuwajima, Tokyo, JP;
Qiang Richard Chen, Phoenix, AZ (US);
Hajime Kuwajima, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A bandpass filter includes at least two thin-film layers, a first resonant circuit including a first inductor, and a second resonant circuit including a second inductor. In one embodiment, the first inductor comprises a coil having a counter-clockwise rotation positioned in two or more of the at least two thin-film layers and the second inductor comprises a coil having a clockwise rotation positioned in two or more of the at least two thin-film layer. In this case, the first inductor is coupled to the second inductor in at least one of the at least two thin-film layers when the bandpass filter is energized. In another embodiment, the first inductor has a clockwise rotation and the second has a counter-clockwise rotation positioned. In this case, the first inductor is coupled to the second inductor in at least two of the at least two thin-film layers when the bandpass filter is energized.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile