Towards a scalable architecture for class-A power amplifiers

In this paper we present a preliminary study on a scalable class-A power amplifier (PA) architecture, which improves PA's efficiency by dynamically scaling biasing current as well as compensating the gain. Simulation results indicate the potential of 71% efficiency improvement, as well as 50% r...

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Bibliographic Details
Published in2005 Asia-Pacific Microwave Conference Proceedings Vol. 2; p. 4 pp.
Main Authors Yanbo Tian, Xinghao Chen, Scheinberg, N.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2005
Subjects
Circuit simulation
Cities and towns
Educational institutions
Electric resistance
Gain control
Heterojunction bipolar transistors
Linearity
Power amplifiers
Signal detection
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Summary:In this paper we present a preliminary study on a scalable class-A power amplifier (PA) architecture, which improves PA's efficiency by dynamically scaling biasing current as well as compensating the gain. Simulation results indicate the potential of 71% efficiency improvement, as well as 50% reduction of power consumption, with the input range near the -8 dBm level. We discuss simulation setups as well as results, and identify future research areas with the goal to have a complete and flexible architecture allowing dynamic current scaling for higher PA efficiency and other operation parameters.
ISBN:078039433X
9780780394339
ISSN:2165-4727
2165-4743
DOI:10.1109/APMC.2005.1606456