| 摘要 |
PROBLEM TO BE SOLVED: To restrain reduction in reception sensitivity even when a second coil having at least a signal information receiving function is further downsized.SOLUTION: There is provided a wireless communication system which includes a first coil having at least a function to transmit signal information, a relay coil, and a second coil having at least a function to receive signal information, and which also satisfies the expression (1) given below. Also provided are a portable compact device, a portable compact device housing case, and a portable compact device communication apparatus which are each used in the wireless communication system. Expression (1) RO1>RO2>RO3, where RO1 denotes the outside diameter of the first coil, RO2 denotes the outside diameter of the relay coil, and RO3 denotes the outside diameter of the second coil. |
