An UHF RFID transponder with novel demodulator and security algorithm

  • Authors:

  • Xiaoxing Feng;Xin'an Wang;Xing Zhang;Yongzhen Qi;Binjie Ge;Jinpeng Shen;Shan Liu

  • Affiliations:

  • The Key Laboratory of Integrated Microsystems, Peking University Shenzhen Graduate School, Shenzhen, China;The Key Laboratory of Integrated Microsystems, Peking University Shenzhen Graduate School, Shenzhen, China;The Key Laboratory of Integrated Microsystems, Peking University Shenzhen Graduate School, Shenzhen, China;The Key Laboratory of Integrated Microsystems, Peking University Shenzhen Graduate School, Shenzhen, China;The Key Laboratory of Integrated Microsystems, Peking University Shenzhen Graduate School, Shenzhen, China;The Key Laboratory of Integrated Microsystems, Peking University Shenzhen Graduate School, Shenzhen, China;The Key Laboratory of Integrated Microsystems, Peking University Shenzhen Graduate School, Shenzhen, China

  • Venue:
  • ASID'09 Proceedings of the 3rd international conference on Anti-Counterfeiting, security, and identification in communication
  • Year:
  • 2009

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Abstract

An UHF Radio Frequency Identification (RFID) transponder, which can function according to either standard ISO 18000-6B or security ISO 18000-6B with Advanced Encryption Standard (AES), is presented in this paper. The UHF RFID transponder is composed of analog front-end (AFE) and digital signal processing unit. A novel demodulator in AFE is presented in this paper. Silicon area occupied by the demodulator is only 21% of traditional structure and it could demodulate input signal with data rate ranging from 10Kbps to 870Kbps. In digital processing unit, 128-bit AES algorithm is built in to ensure security communication between transponder and reader. Total chip area without test pads is 0.7mm2@0.18µm CMOS process and consumes 15µW without writing Memory.