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Optimization of a Class E Power Amplifier in the Transmitting Part of an Inductive Power Transfer System
Authors
	Selyutina E.V.
	Gurov K.O.
	Mindubaev E.A.
	Danilov A.A.
Date of publication
	2022
DOI
	10.31114/2078-7707-2022-3-183-189
Abstract
	A class E power amplifier (PA) is widely used for designing the inductive power transfer (IPT) systems to supply various electronic devices. However, it is difficult to design the class E PA to obtain the required IPT system output characteristics. Design difficulties lead to increase of development time. To optimize the class E PA design, output characteristics of IPT systems with a class E PA and IPT systems with a resonance LC-circuit have been compared. During the investigation, IPT systems have been modeled numerically in the LTSpice and Matlab software. Capacitors in the class E PA load network have been tuned statically or dynamically. In the case of static tuning, a class E PA operated in the nominal conditions for the one coupling coefficient value of IPT system inductive coils. In the case of dynamic tuning, a class E PA operated in the nominal conditions for the range of coupling coefficient values. As a result, similarity has been noted between output characteristics of IPT systems with dynamically tuned class E PA and output characteristics of IPT systems with a resonant LC-circuit in the transmitter. Using the investigation results, rules of class E PA design have been proposed. According to these rules, class E PA design depends on the coupling of IPT system inductive coils.
Keywords
	implantable medical devices, wireless power transfer, inductive coupling, class E power amplifier.
Library reference
	Selyutina E.V., Gurov K.O., Mindubaev E.A., Danilov A.A. Optimization of a Class E Power Amplifier in the Transmitting Part of an Inductive Power Transfer System // Problems of Perspective Micro- and Nanoelectronic Systems Development - 2022. Issue 3. P. 183-189. doi:10.31114/2078-7707-2022-3-183-189
URL of paper
	http://www.mes-conference.ru/data/year2022/pdf/D027.pdf