Investigation on magnetic resonant coupling for low voltage application

This paper describes the characteristics of magnetic resonant coupling at 27.12 MHz for low voltage wireless power transfer system (WPT). Based on spiral magnetic inductance coupling, four single layer air coils are mutually coupled and parameterized to represent power coil, transmitter, receiver and load. The system was simulated using electromagnetic full wave simulator and analysis was performed to characterize the effect of coupling for maximum efficiency of power transfer.