Title :
High gain and high PAE power amplifier by employing adaptive bias control circuit for resonant WPT
Author :
Hyunwook Hwang ; Seungin Yang ; Chulhun Seo
Author_Institution :
Sch. of Electron. Eng., Soongsil Univ., Seoul, South Korea
Abstract :
In this paper, high-efficiency power amplifier is implemented using adaptive bias control circuit for the wireless power transmission (WPT). The high efficiency power amplifier uses the Class-E amplifier structure because the efficiency of the WPT system is strongly affected by the efficiency of power amplifier. The adaptive bias control circuits consist of the directional coupler, power detector and operation amplifier. And the high gain two-stage amplifier using the drive amplifier is performed for the low input stage of power amplifier. The proposed power amplifier using the adaptive bias control circuit can have high efficiency at lower power level.
Keywords :
adaptive control; power amplifiers; adaptive bias control circuit; class E amplifier structure; directional coupler; drive amplifier; high PAE power amplifier; high efficiency power amplifier; high gain amplifier; operation amplifier; power detector; resonant WPT system; wireless power transmission; Detectors; Logic gates; Power amplifiers; Radio frequency; Switching circuits; Voltage control; Wireless communication; High efficiency; adaptive bias control; high gain; power amplifiers; wireless power transmission;
Conference_Titel :
Microwave Conference Proceedings (APMC), 2012 Asia-Pacific
Conference_Location :
Kaohsiung
Print_ISBN :
978-1-4577-1330-9
Electronic_ISBN :
978-1-4577-1331-6
DOI :
10.1109/APMC.2012.6421642
