| 摘要 |
An RFID tag (1) includes an antenna coil (111) configured to transmit and receive a signal through near field communication, a signal processing circuit (121) configured to process the signal transmitted and received by the antenna coil (111), a capacitive element (112) arranged in series between the antenna coil (111) and the signal processing circuit (121), and a control unit (122) configured to control the capacity value of the capacitive element (112). The control unit (122) changes the capacity value of the capacitive element (112) according to whether a voltage is applied from an external power supply. |
