Wireless power supply system

A wireless power supply system, comprising:

• an internal device installed inside a human body for driving an artificial device installed inside the human body;
• and
• an external device installed outside the human body, wherein
• an electric power is configured to be supplied from the external device to the internal device in a noncontact manner using Parity-Time symmetry,
• an external power source is connected to the external device,
• an inverter circuit is provided in the external device for converting a DC voltage supplied from the external power source into an AC voltage,
• a power transmission side resonance circuit and a power transmission side coil are provided in the external device for converting the AC voltage converted by the inverter circuit into an AC magnetic field and transmitting the electric power to the internal device,
• a power reception side coil and a power reception side resonance circuit are provided in the internal device for interlinking the AC magnetic field generated in the power transmission side coil,
• a rectifier circuit is provided in the internal device for converting the AC voltage outputted from the power reception side coil and the power reception side resonance circuit into the DC voltage,
• the artificial device is configured to be driven by DC power converted by the rectifier circuit,
• the power transmission side resonance circuit is formed by connecting the power transmission side coil and a power transmission side resonance capacitor in series with each other and connecting the power transmission side coil and the power transmission side resonance capacitor with the inverter circuit,
• the power reception side resonance circuit is formed by connecting the power reception side coil with at least one of power reception side resonance capacitors, and
• resonance frequencies are matched with each other between the power transmission side resonance circuit and the power reception side resonance circuit.