An NFC Transceiver with Dual Antenna Structure to Support RF-Powered Transponder Mode

Junghyun CHO  Jikon KIM  Shiho KIM  

IEICE TRANSACTIONS on Communications   Vol.E92-B   No.1   pp.310-313
Publication Date: 2009/01/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E92.B.310
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Devices/Circuits for Communications
NFC (near field communication),  RFID,  dual antenna,  

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A single chip NFC transceiver with Dual Antenna structure supporting not only NFC active and passive mode but also 13.56 MHz RFID reader and tag mode is designed and fabricated. The proposed NFC transceiver can operate as a RFID tag even without external power supply thanks to a dual antenna structure for initiator and target. The area increment due to additional target antenna is negligible because the target antenna is constructed by using a shielding layer of the initiator antenna.