One GHz class E RF power amplifier for a polar transmitter

Authors:
Simo Hietakangas;Timo Rautio;Timo Rahkonen
Affiliations:
Department of Electrical and Information Engineering, University of Oulu, Oulu, Finland;Department of Electrical and Information Engineering, University of Oulu, Oulu, Finland;Department of Electrical and Information Engineering, University of Oulu, Oulu, Finland
Venue:
Analog Integrated Circuits and Signal Processing
Year:
2008

Citing 2
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Abstract

This paper describes advantages and characteristics of a class E power amplifier when used in a polar transmitter system. Basic principles of class E operation and information about different nonlinearities are given. Also, modifying the transistor model for switch-mode use is discussed briefly. A 1 GHz, 0.5 W class E power amplifier was implemented for a polar transmitter. Performance measurements of a total transmitter system with and without predistortion are presented.