COMMUNICATION DEVICE, SENDING DEVICE AND RECEIVING DEVICE

原文（中国語）

There is provided a communication device including a sending unit which includes a first coil and a receiving unit which includes a second coil, wherein a resonance phenomenon of a magnetic field is generated in at least one of the first coil or the second coil, which causes the sending unit to send a signal to the receiving unit, and the signal is a signal at a secondary or higher resonant frequency. There may be provided a sending device including a sending unit which includes a coil, wherein a resonance phenomenon of a magnetic field at a secondary or higher resonant frequency in the coil causes a change in a magnetic field in a receiving unit, which causes communication from the sending unit to the receiving unit at the secondary or higher resonant frequency.