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Design of a High Efficiency Class E Amplifier for Wireless LAN  

Park Chan-Hyuck (Dept. of Electronics Eng., University of Incheon)
Koo Kyung-Heon (Dept. of Electronics Eng., University of Incheon)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.43, no.8, 2006 , pp. 91-96 More about this Journal
Abstract
High efficiency switching mode circuits such as class I amplifiers have been well known in the MHz frequency range. The class E amplifier is a type of switching mode amplifier offering very high efficiency approaching 100%. In this paper, the class E amplifier has been designed by using the harmonic balance method of circuit simulator. The designed amplifier is realized by using pHEMT and microstrip line, shows 66% power added efficiency (PAE) at 2.4GHz with 17.6dBm output power. With -3dBm input power of wireless LAN, measured output spec01m can meet the required IEEE 802.11g standard spectrum mask. That means the required amplifier back off of 9dB from $P_{ldB}$ to satisfy the required wireless LAN spectrum mask.
Keywords
class E amplifier; pHEMT; switching mode; high efficiency;
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