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:
Sep. 29, 2009
Filed:
Feb. 25, 2005
Katsuro Nakamata, Kokubu, JP;
Hiroshi Ninomiya, Kokubu, JP;
Masafumi Horiuchi, Kokubu, JP;
Shinji Isoyama, Kokubu, JP;
Tooru Takahashi, Kokubu, JP;
Katsuro Nakamata, Kokubu, JP;
Hiroshi Ninomiya, Kokubu, JP;
Masafumi Horiuchi, Kokubu, JP;
Shinji Isoyama, Kokubu, JP;
Tooru Takahashi, Kokubu, JP;
Kyocera Corporation, Kyoto, JP;
Abstract
The present invention provides a high-frequency switching circuit comprising: two or more high-frequency switches SWand SWprovided correspondingly to a plurality of communication systems having mutually different frequency bands; and a control circuit DECadapted to control the switching of the two or more high-frequency switches SWand SW, in which a common antenna terminal ANTand common terminals ANTand ANTof the respective high-frequency switches SWand SWare connected via a matching circuit MAThaving a filtering function capable of allowing passage of direct current. When one path of the high-frequency switch SWis turned on, the other paths of the high-frequency switch SWand all paths of the high-frequency switch SWcan be turned off.