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

fYear

2011

fDate

24-25 Aug. 2011

Firstpage

1

Lastpage

2

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/IMWS2.2011.6027207

Filename

6027207