Abstract

The variable gap simultaneous of wireless information and power transmission (SWIPT) is a hotspot of wireless power transmission system. Based on the single coil and dual band resonant structure, an energy transmission method is proposed by using the nonlinear gain saturation mechanism of voltage amplifier with variable transmission gap. The accurate analytical solutions of system transmission efficiency and harmonic frequency are deduced by analyzing the circuit model of the system, and the correctness of the theoretical model is verified by using a simulation method.

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