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:
Mar. 05, 2013
Filed:
Jun. 01, 2006
Hiroshi Okabe, Koganei, JP;
Hiroshi Okabe, Koganei, JP;
Renesas Electronics Corporation, Kanagawa, JP;
Abstract
In a radio frequency circuit for multi-mode operation on which multiple transceivers complying with multiple communication systems are disposed, signal interference between circuits is reduced. The PA, and the output matching networksandof GSM system, which are circuits independent of the circuit operation of W-CDMA, are disposed in a section of the shortest distance between the PAthat handles RF transmission signals of W-CDMA being a first communication system, a third output matching network and an isolator, and a receiver that handles RF received signal of W-CDMA, and in a section of the shortest distance between the PAand the transmitterof W-CDMA. The PA, which is a circuit independent of the circuit operation of W-CDMA, is disposed in a section of the shortest distance between the PAand the inter stage filterof W-CDMA.