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:
Dec. 07, 2010
Filed:
Jan. 22, 2008
Shigeru Morimoto, Osaka, JP;
Kaoru Ishida, Osaka, JP;
Shigeru Morimoto, Osaka, JP;
Kaoru Ishida, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
Provided is a transmission circuit which is capable of compensating for an offset voltage and a sensitivity characteristic of a PA, and operating with low distortion and high efficiency. A regulatorsupplies, to a PA, a voltage which is controlled in accordance with an amplitude signal to which a first offset value has been added. A regulatorsupplies, to a PA, a voltage which is controlled in accordance with an amplitude signal to which a second offset value has been added. The PAamplifies, in accordance with the voltage supplied from the regulator, a phase-modulated signal outputted from a phase modulator. The PAamplifies, in accordance with the voltage supplied from the regulator, an output signal of the PA. A digital blockcontrols the first and second offset values in accordance with temperature information T measured by a temperature measuring section