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:
Apr. 25, 2017
Filed:
Apr. 15, 2014
Applicant:
Mediatek Inc., Hsin-Chu, TW;
Inventors:
Chao Lu, Fremont, CA (US);
Chun-Hsien Peng, Nantou County, TW;
Paul Cheng Po Liang, Hsinchu County, TW;
Assignee:
MEDIATEK INC., Hsin-Chu, TW;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03F 3/24 (2006.01); H03F 3/21 (2006.01); H03F 3/45 (2006.01); H03F 1/02 (2006.01); G11C 7/22 (2006.01);
U.S. Cl.
CPC ...
H03F 3/245 (2013.01); G11C 7/22 (2013.01); H03F 1/0211 (2013.01); H03F 1/0266 (2013.01); H03F 3/211 (2013.01); H03F 3/45179 (2013.01); H03F 2200/321 (2013.01); H03F 2200/336 (2013.01); H03F 2203/45302 (2013.01);
Abstract
A radio frequency transmitter includes a digital power amplifier and a bias control circuit. The digital power amplifier is arranged for receiving at least a radio frequency input signal, a digital amplitude control word signal and at least one bias voltage to generate a radio frequency output signal. The bias control circuit is coupled to the digital power amplifier, and is arranged for adjusting the at least one bias voltage according to a power control signal.