Title :
Power gain of Class E and Class B VHF tuned power amplifiers
Author :
Modzelewski, Juliusz
Author_Institution :
Inst. of Radioelectron., Warsaw Univ. of Technol., Poland
Abstract :
The main advantage of Class E tuned power amplifiers is a very high efficiency (above 90%). In contrast, the power gain of the HF Class E amplifiers is low compared to conventional Class C or Class B amplifiers. The input powers of the equivalent Class E and Class B amplifiers are analyzed using the simplified model of power transistors. It is proved that the power gain of the Class E amplifier is above 2 times lower than the Class B amplifier power gain.
Keywords :
HF amplifiers; VHF amplifiers; amplification; network analysis; power amplifiers; semiconductor device models; transistor circuits; Class B power amplifiers; Class E power amplifiers; HF amplifiers; VHF amplifiers; VHF power amplifiers; power gain; simplified power transistor model; tuned power amplifiers; Driver circuits; Frequency; Hafnium; High power amplifiers; MOSFETs; Power amplifiers; Power generation; Power transistors; Pulse amplifiers; Voltage;
Conference_Titel :
Microwaves, Radar and Wireless Communications, 2004. MIKON-2004. 15th International Conference on
Print_ISBN :
83-906662-7-8
DOI :
10.1109/MIKON.2004.1356850
