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IEEE BCTM 7.1 High Dynamic Range, High Efficiency Power Amplifiers for
 

Summary: IEEE BCTM 7.1
High Dynamic Range, High Efficiency Power Amplifiers for
Wireless Communications
Peter Asbeck, Larry Larson, Don Kimball, Yu Zhao, Feipeng Wang and Dongjiang Qiao
Department ofElectrical and Computer Engineering, MS 0407
La Jolla, CA 92093-0407
Abstract - This paper provides an overview of power
amplifier architectures for high efficiency and linearity over
a wide range of output power levels, as required in CDMA,
WLAN and other mobile wireless applications. Envelope
Tracking and Doherty amplifiers are described and issues
for their implementation with HBTs are discussed. Envelope
tracking implementation issues are reviewed. A Doherty
CDMA amplifier with high overall efficiency (averaged over
output power levels) is presented.
Index Terms - RF power amplifiers, HBT circuits, high
efficiency techniques.
I. INTRODUCTION
In many wireless communication systems, the signal
to be transmitted varies in power level over a very large

  

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

 

Collections: Engineering