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. 05, 2010
Filed:
Mar. 07, 2007
Wataru Koga, Kyoto, JP;
Takeshi Takenoshita, Kyoto, JP;
Takanori Ikuta, Kyoto, JP;
Kyocera Corporation, Kyoto, JP;
Abstract
Provided is a demultiplexer capable of improving attenuation characteristic and isolation characteristic of a filter having a lower transmission frequency band among two filters having different transmission frequency bands, outside the transmission frequency band of a high-frequency side. A communication device using the demultiplexer is also disclosed. A first spiral wiring portion () and a sixth wiring portion () are formed so that an angle defined by a direction of a part (L) of the first spiral wiring portion () and a direction of a part (L) of the sixth spiral wiring portion () on a predetermined virtual plane is, for example, 0 degree and the direction of the current flowing in the part (L) of the first spiral wiring portion () is opposite to the direction of the current flowing in the part (L) if the sixth wiring portion ().