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IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 49, NO. 11, NOVEMBER 2001 2163 Synergistic Design of DSP and Power Amplifiers for
 

Summary: IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 49, NO. 11, NOVEMBER 2001 2163
Synergistic Design of DSP and Power Amplifiers for
Wireless Communications
Peter M. Asbeck, Fellow, IEEE, Lawrence E. Larson, and Ian G. Galton, Member, IEEE
Abstract--Co-design of digital signal-processing (DSP) algo-
rithms and power-amplifier characteristics can lead to improved
efficiency and linearity through a variety of strategies including:
predistortion, DSP control over bias conditions, particularly
the power supply voltage, and DSP generation of digital input
signals for switching amplifiers. This paper discusses several am-
plifier architectures that exemplify these approaches, including:
bias-controlled amplifiers, linear amplification with nonlinear
components amplifiers, and class-S amplifiers. We envision for the
future a generation of "smart power amplifiers," in which DSP
optimization of amplifier parameters is carried out for changing
environments.
Index Terms--Delta­sigma modulation, digital radio, RF power
amplifier.
I. INTRODUCTION
DIGITAL signal processing (DSP) using Si CMOS in-

  

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