Title :
AC-driven class E amplifiers
Author :
Ong, Brian ; Zulinski, Robert E. ; Mandojana, Julio C.
Author_Institution :
Dept. of Electr. Eng., Michigan Technol. Univ., Houghton, MI, USA
Abstract :
Because of its high efficiency (about 96 percent) the class E tuned power amplifier has found applications in DC-to-AC inverters and DC-to-DC converters, and also frequency multipliers. The most basic configuration of a class E amplifier consists of a transistor operating as a switch connected to a load network which, in turn, contains a capacitor parallel to the switch and a series RLC output circuit. As the switch changes state, the response of the load network is varied. Previous analytical solutions are based on a DC-powered class E tuned power amplifier. This paper presents a mathematical approach towards generating an analytical solution for an AC-powered class E power amplifier. The equations that determine the circuit operation are derived using Laplace transforms, Fourier analysis and a high Q assumption
Keywords :
Fourier analysis; Laplace transforms; network analysis; power amplifiers; switching circuits; AC-driven amplifiers; Fourier analysis; Laplace transforms; class E amplifiers; high Q assumption; series RLC output circuit; switching; tuned power amplifier; DC-DC power converters; Frequency conversion; High power amplifiers; Inverters; Power amplifiers; RLC circuits; Switched capacitor circuits; Switched capacitor networks; Switches; Switching circuits;
Conference_Titel :
Circuits and Systems, 1997. Proceedings of the 40th Midwest Symposium on
Conference_Location :
Sacramento, CA
Print_ISBN :
0-7803-3694-1
DOI :
10.1109/MWSCAS.1997.666069
