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. 07, 2009
Filed:
Jun. 09, 2006
System and method for providing a transmitter for polar modulation and power amplifier linearization
Sanjay Nandipaku, North Andover, MA (US);
Roxann Blanchard, Chester, NH (US);
Robert Broughton, Chester, NH (US);
Robert G. Gels, Boston, MA (US);
Cecile Masse, Methuen, MA (US);
Sanjay Nandipaku, North Andover, MA (US);
Roxann Blanchard, Chester, NH (US);
Robert Broughton, Chester, NH (US);
Robert G. Gels, Boston, MA (US);
Cecile Masse, Methuen, MA (US);
Mediatek Inc., Hsin-Chu, TW;
Abstract
A transmitter circuit is disclosed for use in a multi-frequency wireless communication system. The transmitter circuit includes an input modulation unit, a phase modulation system, and an amplitude modulation system. The input modulation unit receives at least one signal that is representative of information to be modulated. The phase modulation system is coupled to the input modulation unit and provides a phase modulation on an output signal. The phase modulation system includes a phase detection system and an adjustable power amplifier. The amplitude modulation system is coupled to the input modulation unit and provides amplitude modulation on the output signal. The amplitude modulation system includes an amplitude detection system for providing an output signal to the adjustable power amplifier, and a variable gain amplifier coupled to the adjustable power amplifier.