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:
May. 09, 2017
Filed:
Nov. 16, 2011
Hua Wang, San Francisco, CA (US);
Chao LU, Fremont, CA (US);
Julia Liu, San Jose, CA (US);
Chun-hsien Peng, Nantou County, TW;
Sang Won Son, Palo Alto, CA (US);
Paul Cheng Po Liang, Hsinchu County, TW;
Hua Wang, San Francisco, CA (US);
Chao Lu, Fremont, CA (US);
Julia Liu, San Jose, CA (US);
Chun-Hsien Peng, Nantou County, TW;
Sang Won Son, Palo Alto, CA (US);
Paul Cheng Po Liang, Hsinchu County, TW;
MediaTek Singapore PTE, Ltd., Solaris, SG;
Abstract
A radio frequency (RF) transmitter has at least one digital signal processing module and at least one power amplifier module. The digital signal processing module includes at least one digital pre-distortion component arranged to receive at least one complex input signal, perform two-dimensional non-uniform mapping of the complex input signal to a first, in-phase, digital pre-distortion control word and a further, quadrature, digital pre-distortion control word, and output the in-phase and quadrature pre-distortion digital control words. The power amplifier module includes a first, in-phase, array of switch-mode power cells and at least one further, quadrature, array of switch-mode power cells. The two-dimensional non-uniform mapping has a pre-distortion profile at least partly based on an input/output relationship for the power amplifier module arranged to generate an analog RF signal based at least partly on the in-phase and quadrature digital pre-distortion control words.