Antenna structures and electronics device having the same

A near-field communication (NFC) device, comprising:

• an NFC circuitry configured to perform NFC;
• an antenna structure connected to the NFC circuitry;
• and
• a matching circuit configured to perform impedance matching between the NFC circuitry and the antenna structure;
• wherein the antenna structure comprises:
• a plurality of antenna segments configured to form a metal frame surrounding a periphery of a body including the NFC circuitry and the matching circuit, and a plurality of slits formed among the plurality of antenna segments,
• wherein each of the plurality of antenna segments comprises a first feeding terminal and a second feeding terminal respectively formed at first and second ends of the respective antenna segment, and
• wherein the first feeding terminals are connected in parallel to a first end of the matching circuit, and the second feeding terminals are connected in parallel to a second end of the matching circuit.

A near-field communication (NFC) device, comprising:

• NFC circuitry configured to perform NFC;
• an antenna structure configured to transmit and receive radio frequency communications;
• a matching circuit configured to perform impedance matching between the NFC circuitry and the antenna structure;
• and
• a body comprising the NFC circuitry and the matching circuit;
• wherein the antenna structure comprises an antenna segment configured to form a metal frame on a periphery of the body,
• wherein the antenna segment comprises a first feeding terminal at a first end of the antenna segment,
• wherein the antenna segment comprises a second feeding terminal at a second end of the antenna segment, and
• wherein the first and second feeding terminals are connected to the matching circuit.