Wireless communication device

A wireless communication device, comprising:

• an antenna, in response to receiving a radio wave, transmitting a radio frequency signal corresponding to the radio wave;
• a detector, detecting the radio frequency signal to obtain a detection signal;
• a circuit part, performing signal processing based on reception data obtained by performing demodulation processing on the detection signal;
• a regulator, in response to receiving an external power source voltage from an external source, generating and supplying an internal power source voltage for operating the circuit part to the circuit part based on the external power source voltage;
• and
• a radio wave detection control part, detecting whether or not the antenna is receiving a radio wave and controlling the regulator so that a generation operation of the internal power source voltage by the regulator is stopped in response to the antenna not receiving the radio wave.