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:
Sep. 18, 2018
Filed:
Feb. 09, 2016
Mediatek Inc., Hsin-Chu, TW;
Hsing-ting Yu, San Jose, CA (US);
Fei Song, San Jose, CA (US);
I-Chang Wu, Fremont, CA (US);
YuenHui Chee, Redwood City, CA (US);
Chiyuan Lu, San Jose, CA (US);
Keng Leong Fong, Sunnyvale, CA (US);
Osama K. A. Shana'a, San Jose, CA (US);
MediaTek Inc., Hsin-Chu, TW;
Abstract
Methods and apparatus for providing adaptive biasing to power amplifiers. Adaptive bias circuits are configured to provide sharp turn on and/or current clamping to improve the efficiency of a power amplifier over a wide input signal bandwidth. Sharp turn on may be achieved using a subtraction technique to subtract outputs from multiple detectors. Clamping may be achieved using MOSFET device characteristics to pull the device from the triode region into the saturation, subtraction techniques to subtract the outputs from multiple detectors, and/or by using circuit devices, such as diodes.