Title :
An exact analysis of Class-E power amplifiers for RF communications
Author :
Klehn, Brett E. ; Islam, Syed S.
Author_Institution :
Dept. of Electr. Eng., Rochester Inst. of Technol., NY, USA
Abstract :
An exact analytical approach to the design of a Class-E high frequency power amplifier is presented. The analysis will optimize the load network parameters at the output of the switching transistor, while accounting for harmonics injected into the circuit from the choke inductor, finite quality factor of the output load network, and an exponential decay of the drain/collector current during OFF state. Calculated power performances in terms of efficiency and Total Harmonic Distortion (THD) as a function of decay angle and finite choke inductance are presented.
Keywords :
Q-factor; harmonic distortion; inductors; power amplifiers; radiocommunication; RF communications; choke inductor; class-E high frequency power amplifier; decay angle; drain-collector current; exponential decay; finite choke inductance; harmonics injector; load network parameters; quality factor; radiofrequency communications; switching transistor; total harmonic distortion; Communication switching; Harmonic analysis; High power amplifiers; Inductors; Power amplifiers; Q factor; Radio frequency; Radiofrequency amplifiers; Switching circuits; Total harmonic distortion;
Conference_Titel :
Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on
Print_ISBN :
0-7803-8251-X
DOI :
10.1109/ISCAS.2004.1328994
