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:
Aug. 16, 2011
Filed:
Dec. 24, 2007
Maki Nakamura, Osaka, JP;
Shigeru Morimoto, Osaka, JP;
Maki Nakamura, Osaka, JP;
Shigeru Morimoto, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A polar modulation transmission apparatus is disclosed, which reduces the circuit scale by removing isolators and which reduces the heat loss of a power amplifier. In this apparatus, current detecting sectiondetects current value Icc of current flowing from power supply voltage sectionto power amplifier, and power control sectionoutputs control signal Sto power apply sectionbased on power control signal Sto be inputted and current value Icc. Power apply sectionforms amplitude modulation signal Sby multiplying baseband amplitude modulation signal Sby control signal S, and regulatorsupplies to power amplifierpower supply voltage Sconverted into power supply voltage Sby amplitude modulation signal S. Power amplifierobtains RF transmission signal Sby amplifying the power of phase modulation high-frequency signal Sas the power supply of power supply voltage S