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:
Nov. 23, 2010
Filed:
Oct. 11, 2007
Yoshihiro Hara, Osaka, JP;
Shigeru Morimoto, Osaka, JP;
Yoshihiro Hara, Osaka, JP;
Shigeru Morimoto, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A modulatorcorrects an amplitude signal Rd by adding thereto an offset value α and generates, based on the corrected amplitude signal Rd, an amplitude signal Ra for amplitude-modulating a radio-frequency signal. The modulatorincludes: an offset voltage measurement sectionoperable to measure an offset voltage Vof the amplitude signal Ra; a correction value calculation sectionoperable to obtain a difference value ΔVbetween the offset voltage Vmeasured by the offset voltage measurement sectionand an initial value of the offset voltage Vand operable to calculate, based on the difference value ΔV, a correction value Vfor correcting the offset voltage V; and an addition sectionoperable to add the correction value Vcalculated by the correction value calculation sectionto a signal processed until the amplitude signal Ra is generated from the amplitude signal Rd.