In this paper, a steady-state matrix analysis method is introduced to analyze the output\ncharacteristics of the class-E power amplifier used in a wireless power transfer (WPT) system, which\ntakes the inductance resistance, on-resistance and leakage current of metal-oxide-semiconductor\nfield effect transistor (MOSFET) into account so that the results can be closer to the actual value.\nOn this basis, the parameters of the class-E power amplifier are optimized, and the output power is\nimproved under the premise of keeping the efficiency unchanged. Finally, the output characteristics\nof the amplifier before and after optimization are compared by an experiment, while the B-field\nstrength around the WPT system is studied through simulation. The experimental results verify the\ncorrectness and feasibility of the optimization method based on steady-state matrix analysis.
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