Near field communication device and operating method

A near field communication (NFC) device comprising:

• a wake-up unit configured to:
• transmit one or more radio frequency (RF) pulses;
• detect a loading condition change occurring in response to transmitting the one or more RF pulses;
• wake up one or more functional components of the NFC device if the loading condition change exceeds a predefined wake-up threshold;
• and
• a calibration state determination unit configured to determine a calibration state of the wake-up unit by detecting whether the loading condition change is within a predefined range below the predefined wake-up threshold.

A method of operating a near field communication (NFC) device, the method comprising:

• transmitting, by a wake-up unit included in the NFC device, one or more radio frequency (RF) pulses;
• detecting, by the wake-up unit, a loading condition change occurring in response to transmitting the one or more RF pulses;
• waking up, by the wake-up unit, one or more functional components of the NFC device if the loading condition change exceeds a predefined wake-up threshold;
• and
• determining, by a calibration state determination unit included in the NFC device, a calibration state of the wake-up unit by detecting whether the loading condition change is within a predefined range below the predefined wake-up threshold.