Title :
A design of high efficiency class-E power amplifier for wireless power transfer system
Author :
HyungGu Park ; Joon-Sung Park ; YoungGun Pu ; Seung-Ok Lim ; Yeon-Kuk Moon ; Sun-Hee Kim ; Kang-Yoon Lee
Author_Institution :
Dept. of Electron. Eng., Konkuk Univ., Seoul, South Korea
Abstract :
In this paper, class-E power amplifier (PA) with automatic power control loop and load compensation circuit is presented. The transmitted power is controlled by adjusting the signal applied to the gate of the power control transistor. In addition, a parallel capacitor is also controlled to enhance the efficiency and compensate for the load variation. This chip is implemented in a 0.35 μm BCD technology, and provides the output power control range of 10-30.2 dBm. The maximum power efficiency of the power amplifier is 71.5%.
Keywords :
inductive power transmission; load regulation; power amplifiers; power control; BCD technology; automatic power control loop; high efficiency class E power amplifier; load compensation circuit; load variation; parallel capacitor; power control transistor; transmitted power; wireless power transfer system; Capacitors; Control systems; Load management; Power amplifiers; Power control; Power generation; Wireless communication; Class-E; Load Compensation; Power Amplifier; Power Control; Wireless Power Transfer;
Conference_Titel :
Intelligent Radio for Future Personal Terminals (IMWS-IRFPT), 2011 IEEE MTT-S International Microwave Workshop Series on
Conference_Location :
Daejeon
Print_ISBN :
978-1-4577-0961-6
Electronic_ISBN :
978-1-4577-0963-0
DOI :
10.1109/IMWS2.2011.6027207
