Wearable ring device for managing wireless charging and nfc communication

A wearable ring device for managing wireless charging and NFC communication, comprising:

• a ring body adapted to be worn on a finger of a user, wherein the ring body having an interior surface and an exterior surface;
• a shared antenna placed at the interior surface of the ring body, wherein the shared antenna is configured to perform both the NFC communication and wireless charging;
• a physiological sensor configured to detect whether the wearable ring device is worn on the finger of the user;
• a wireless charging controller that performs the wireless charging of the wearable ring device in a wireless charging mode using the shared antenna;
• an NFC controller that performs the NFC communication with external NFC-enabled devices in a NFC communication mode using the shared antenna;
• and
• a microcontroller connected to the physiological sensor, the wireless charging controller, NFC controller, and the shared antenna, wherein the microcontroller controls switching between the wireless charging mode and the NFC communication modes based on reception of the physiological signal from the physiological sensor, and performs one of the wireless charging of the wearable ring device using the shared antenna or the NFC communication with the external NFC-enabled devices using the shared antenna.