Patent ID: 11907785
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  B  H | IPC G  H

Claim 0:
1. An electronic card with electronic function circuit comprising:
a communication antenna for short-range wireless communication;
a wireless communication IC electrically coupled to the communication antenna and configured to perform short-range wireless communication;
a receiving coil configured to receive power from a magnetic field at a frequency for the short-range wireless communication;
a resonant capacitor configuring a receiving resonant circuit together with the receiving coil;
a rectifying and smoothing circuit coupled to the receiving resonant circuit;
a receiving display element;
a power control circuit configured to control power from the receiving resonant circuit; and
an electronic function circuit configured to operate by using the power from the receiving resonant circuit,
wherein
the communication antenna and the receiving coil are configured to share electromagnetic field energy that resonates at the frequency for the short-range wireless communication, and
in response to the receiving coil receiving the power from the resonating electromagnetic field energy, the power control circuit is configured to indicate a power receiving state to a user by driving the receiving display element.