Title :
Maximum Operating Frequency of Class-E Amplifier at Any Duty Ratio
Author :
Suetsugu, Tadashi ; Kazimierczuk, Marian K.
Author_Institution :
Dept. of Electron. Eng. & Comput. Sci., Fukuoka Univ., Fukuoka
Abstract :
This paper shows that the maximum operating frequency of the class-E power amplifier depends on the transistor duty ratio. The maximum operating frequency increases as the duty ratio decreases under zero-voltage switching and zero-derivative switching conditions at fixed values of the output power, dc supply voltage, and shunt capacitance.
Keywords :
numerical analysis; power amplifiers; zero voltage switching; RF power amplifiers; class-e amplifier; duty ratio; frequency limitation; maximum operating frequency; zero-derivative switching; zero-voltage switching; Class-E power amplifiers; RF power amplifiers; frequency limitation; maximum operating frequency; zero-derivative switching (ZDS) operation; zero-voltage-switching (ZVS) operation;
Journal_Title :
Circuits and Systems II: Express Briefs, IEEE Transactions on
DOI :
10.1109/TCSII.2008.922407
