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:
Feb. 09, 2016
Filed:
Feb. 06, 2013
Applicant:
Mstar Semiconductor, Inc., Hsinchu Hsien, TW;
Inventors:
Dennis Mahoney, Greensboro, NC (US);
Khurram Muhammad, Garland, TX (US);
Assignee:
MStar Semiconductor, Inc., Hsinchu Hsien, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04K 1/02 (2006.01); H04L 1/00 (2006.01); H03F 1/32 (2006.01); H04L 27/36 (2006.01);
U.S. Cl.
CPC ...
H04L 1/0033 (2013.01); H03F 1/3241 (2013.01); H03F 2200/336 (2013.01); H03F 2201/3233 (2013.01); H04L 27/367 (2013.01);
Abstract
A predistortion function is evaluated with in-phase (I) and quadrature (Q) data words as arguments, while additive I and Q data words are generated in accordance with a comparison of the I and Q data words with a full scale value that generates maximum current in a digital power amplifier. The additive I and Q data words are added to the computed I and Q data words to produce predistorted I and Q data words. The predistorted I and Q data words are provided in a sequence to the digital power amplifier, which generates a corresponding radio-frequency (RF) analog signal.