Constant current power amplifier for MHz magnetic resonance wireless power transfer systems

This paper introduces the concept of constant current power amplifier (PA) for magnetic resonance wireless power transmitters, where the current output of the PA remains almost constant when the load impedance varies. The solution enables the wireless power transfer system to simultaneously support...

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Bibliographic Details
Published in2017 IEEE MTT-S International Microwave Symposium (IMS) pp. 1050 - 1052
Main Authors Songnan Yang, Bin Xiao, Tiefeng Shi
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.06.2017
Subjects
Impedance
Magnetic resonance
Network topology
power amplifiers
Power harmonic filters
Switches
Topology
Transmitters
wireless power transmission
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Summary:This paper introduces the concept of constant current power amplifier (PA) for magnetic resonance wireless power transmitters, where the current output of the PA remains almost constant when the load impedance varies. The solution enables the wireless power transfer system to simultaneously support multiple devices and naturally supply the power demanded by receivers without feedback control. In this paper, the design methodology of such PA will be discussed in detail followed by a design example.
DOI:10.1109/MWSYM.2017.8058772