Patent ID: 8400279

Claim:
A wireless communication tag previously set with predetermined identification information, the wireless communication tag comprising: (i) a first antenna for wirelessly communicating various types of data between a reader/writer and an IC device; (ii) a controller for controlling the data communicated through the first antenna; (iii) a second antenna for receiving an electromotive radio wave for generating electric power from an electromotive radio wave; and (iv) a charging unit for generating electric power from the electromotive radio wave received by the second antenna as well as for storing the generated electric power, wherein: the electric power stored in the charging unit is used, thereby allowing either one of the first and second antennas to provide, to the reader/writer, data relating to the identification information, the wireless communication tag further comprises a diode disposed between the IC device and the charging unit, and the diode exercises ON/OFF control of direct current voltage that is applied from the charging unit to the IC device, in order to activate the IC device by means of electric power generated and stored by the charging unit, when a radio wave that is received by the first antenna is weak.