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Off-Nominal Operation of Class-E Amplifier at Any Duty Ratio

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2 Author(s)
Tadashi Suetsugu ; Fukuoka Univ., Fukuoka ; Marian K. Kazimierczuk

Design equations for satisfying the suboptimum operating condition, i.e., only the zero-voltage switching (ZVS) condition, of a class-E amplifier with a linear shunt capacitance at any duty ratio are derived. By exploiting the suboptimum class-E operation, various amplifier parameters such as operating frequency, output power, load resistance, and component values can vary, while the ZVS operation and high efficiency can be achieved. An example of a design procedure of the class-E amplifier is given. The theoretical results were verified with PSpice simulation and an experiment.

Published in:

IEEE Transactions on Circuits and Systems I: Regular Papers  (Volume:54 ,  Issue: 6 )