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:
Jul. 20, 2010
Filed:
Feb. 27, 2007
Maki Nakamura, Osaka, JP;
Kaoru Ishida, Osaka, JP;
Maki Nakamura, Osaka, JP;
Kaoru Ishida, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
Provided is a polar modulation apparatus capable of performing power limit with a simple configuration even when controlling a transmission power and increasing the transmission signal output power control range. A polar modulation device () includes an amplitude limit unit () for limiting an amplitude component of an amplitude signal, a D/A converter () for converting an inputted digital signal into an analog signal, a power control unit () for performing power control so that the inputted signal is an output signal based on the power control signal, a voltage control circuit () for supplying voltage to an amplitude modulator () according to the output signal from the power control unit (), an angle modulator () for performing angle modulation according to a phase signal, and an amplitude modulator () for performing amplitude modulation on the signal subjected to angle modulation, according to the voltage supplied from the voltage control circuit ().