WIRELESS COMMUNICATION SYSTEM, AND SMALL PORTABLE DEVICE, HOUSING CASE FOR A SMALL PORTABLE DEVICE, AND COMMUNICATION DEVICE FOR A SMALL PORTABLE DEVICE TO BE USED IN THE WIRELESS COMMUNICATION SYSTEM

摘要

A wireless communication system may include a first coil having at least a function of transmitting signal information, a relay coil, and a second coil having at least a function of receiving the signal information, and satisfying Equation (1): RO1RO2RO3, where RO1 represents an outer diameter of the first coil, RO2 represents an outer diameter of the relay coil, and RO3 represents an outer diameter of the second coil, and a small portable device, a housing case for a small portable device, and a communication device for a small portable device to be used in the wireless communication system.