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. 16, 2008
Filed:
Jul. 12, 2005
Takashi Ogawa, Tokyo, JP;
Shinichiro Takatani, Koganei, JP;
Akishige Nakajima, Higashiyamato, JP;
Yasushi Shigeno, Maebashi, JP;
Eigo Tange, Takasaki, JP;
Takashi Ogawa, Tokyo, JP;
Shinichiro Takatani, Koganei, JP;
Akishige Nakajima, Higashiyamato, JP;
Yasushi Shigeno, Maebashi, JP;
Eigo Tange, Takasaki, JP;
Renesas Technology Corp., Tokyo, JP;
Abstract
An object of the present invention is to provide an antenna switch circuit that effectively reduces signal leakages at a cross point even at higher operating frequencies and a high frequency module containing said antenna switch module. The antenna switch circuit comprises: a high frequency signal line to transmit a transmitting signal to be input to transmitting terminals to an antenna terminal and also to transmit a receiving signal to be input to the antenna terminal to receiving terminals; switches that are connected in the middle of the high frequency signal line between transmitting terminal and antenna terminal; switches that are connected in the middle of the high frequency signal line between receiving terminal and antenna terminal; and signal lines to transmit control signals for controlling turning on and off of the switches.