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. 12, 2013
Filed:
Apr. 01, 2010
Ryo Kitamura, Kanagawa, JP;
Kaoru Ishida, Kanagawa, JP;
Mikihiro Shimada, Osaka, JP;
Hiroshi Komori, Shiga, JP;
Ryo Kitamura, Kanagawa, JP;
Kaoru Ishida, Kanagawa, JP;
Mikihiro Shimada, Osaka, JP;
Hiroshi Komori, Shiga, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A transmitter circuit is provided which is capable of reducing modulation distortion even when an output power of a power amplifying sectionis low. A signal generation sectiongenerates an amplitude signal and a phase signal. A regulatoroutputs a current based on the amplitude signal. A phase modulation sectionphase-modulates the phase signal, and outputs a phase-modulated signal. The power amplifying sectionreceives the current which is based on the amplitude signal and supplied as a bias current from the regulator, and amplifies the phase-modulated signal by using the supplied current. Further, to the power amplifying section, a predetermined DC voltage is supplied as a collector voltage.