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. 03, 2021
Filed:
May. 10, 2018
Applicant:
Mediatek Inc., Hsin-Chu, TW;
Inventors:
Ching-Shyang Maa, Tainan, TW;
Chun-Hsien Peng, Nantou County, TW;
Hua-Lung Yang, Taipei, TW;
I-No Liao, Hsinchu County, TW;
Chen-Jui Hsu, Hsinchu County, TW;
Jen-Yang Liu, Taipei, TW;
Assignee:
MEDIATEK INC., Hsin-Chu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/04 (2006.01); H03F 1/32 (2006.01); H03F 3/21 (2006.01); H03F 3/19 (2006.01); H03F 1/30 (2006.01); H03F 1/02 (2006.01); H03F 3/24 (2006.01);
U.S. Cl.
CPC ...
H03F 1/3258 (2013.01); H03F 1/0211 (2013.01); H03F 1/0261 (2013.01); H03F 1/30 (2013.01); H03F 3/19 (2013.01); H03F 3/21 (2013.01); H03F 3/245 (2013.01); H03F 2200/18 (2013.01); H03F 2200/447 (2013.01); H03F 2200/451 (2013.01); H03F 2200/468 (2013.01); H03F 2201/3209 (2013.01); H03F 2201/3224 (2013.01); H03F 2201/3233 (2013.01);
Abstract
A method of reducing memory effect of a power amplifier (PA), for a look-up table (LUT) based memory digital pre-distortion (DPD) circuit of an electronic device is disclosed. The method comprises generating a pre-distorted signal according to a LUT including parameters of an input signal amplitude and an input signal delay associated with a bandwidth of a signal inputted to the memory DPD circuit, and outputting the pre-distorted signal to the PA for improving the nonlinearity of the PA.