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Theory and experimental validation of a Class E PA above theoretical maximum frequency

Published online by Cambridge University Press:  19 June 2009

Elisa Cipriani ,
Paolo Colantonio ,
Franco Giannini  and
Rocco Giofré
Elisa Cipriani*
Affiliation:
Electronic Engineering Department, Università di Roma Tor Vergata, Via del Politecnico 1, 00133 Roma, Italy.
Paolo Colantonio
Affiliation:
Electronic Engineering Department, Università di Roma Tor Vergata, Via del Politecnico 1, 00133 Roma, Italy.
Franco Giannini
Affiliation:
Electronic Engineering Department, Università di Roma Tor Vergata, Via del Politecnico 1, 00133 Roma, Italy.
Rocco Giofré
Affiliation:
Electronic Engineering Department, Università di Roma Tor Vergata, Via del Politecnico 1, 00133 Roma, Italy.
*
Corresponding author: E. Cipriani E-mail: elisa.cipriani@uniroma2.it
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Abstract

This paper reports an investigation and a proposed solution to design Class E power amplifiers above the theoretical maximum frequency allowed by the adopted active device. Starting from the traditional time domain analysis, a numerical algorithm has been developed and presented in order to extend Class E feasibility through the optimization of the output voltage waveform. A hybrid Class E amplifier in laterally diffused metal oxide semiconductor (LDMOS) technology has been designed and measured. The final amplifier shows an output power of more than 10 W with an associated efficiency of 49% (power added efficiency (PAE) = 45%) over a 100-MHz bandwidth around 2.14 GHz.

Keywords

Class EPower amplifierHigh efficiencyHigh frequencyLDMOS
Type
Original Article
Information
International Journal of Microwave and Wireless Technologies , Volume 1 , Special Issue 4: European Microwave Week 2008 , August 2009 , pp. 293 - 299
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2009

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References

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