Home

About

Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network
FAQHELPSITE MAPCONTACT US


  Advanced Search  

 
4086 IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 54, NO. 12, DECEMBER 2006 An Improved Power-Added Efficiency 19-dBm
 

Summary: 4086 IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 54, NO. 12, DECEMBER 2006
An Improved Power-Added Efficiency 19-dBm
Hybrid Envelope Elimination and Restoration Power
Amplifier for 802.11g WLAN Applications
Feipeng Wang, Student Member, IEEE, Donald F. Kimball, Member, IEEE, Jeremy D. Popp,
Annie Hueiching Yang, Student Member, IEEE, Donald Y. Lie, Senior Member, IEEE,
Peter M. Asbeck, Fellow, IEEE, and Lawrence E. Larson, Fellow, IEEE
Abstract--A comparison of envelope elimination and restoration
(EER) and envelope tracking (ET) is discussed and a "hybrid"
wideband EER power amplifier (PA) for the WLAN 802.11g
system is proposed. A 60% efficiency (the output envelope signal
power/input dc power) DC-20-MHz wideband envelope amplifier
is designed for wideband EER and wideband ET (WBET) appli-
cations. A design method is developed to optimize the efficiency
of the envelope amplifier for a given peak-to-average ratio and
average slew rate of the envelope signal. An experimental "hybrid"
Class-E EER system shows an overall efficiency (modulated RF
output power/envelope amplifier dc input power) of 36% and
power-added efficiency (the modulated RF output power/en-
velope amplifier dc input power plus RF input power) of 28%

  

Source: Asbeck, Peter M. - Department of Electrical and Computer Engineering, University of California at San Diego
Larson, Larry - Department of Electrical and Computer Engineering, University of California at San Diego

 

Collections: Engineering