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. 01, 2018
Filed:
Jul. 12, 2017
Applicant:
Mediatek Inc., Hsin-Chu, TW;
Inventors:
Chien-Cheng Lin, Taichung, TW;
Ming-Da Tsai, Miaoli County, TW;
Assignee:
MEDIATEK INC., Hsin-Chu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/00 (2006.01); H04L 27/36 (2006.01); H03D 7/16 (2006.01); H03F 1/32 (2006.01); H03C 3/08 (2006.01); H04B 1/04 (2006.01);
U.S. Cl.
CPC ...
H04L 27/366 (2013.01); H03C 3/08 (2013.01); H03D 7/166 (2013.01); H03F 1/3264 (2013.01); H04B 2001/0408 (2013.01);
Abstract
A compensation circuit of a power amplifier includes a varactor, a voltage sensor and a control circuit. The varactor is coupled to an input terminal of the power amplifier. The voltage sensor is arranged for detecting an amplitude of an input signal of the power amplifier to generate a detecting result. The control circuit is coupled to the varactor and the voltage sensor, and is arranged for controlling a bias voltage of the varactor to adjust a capacitance of the varactor according to the detecting result.