SEMICONDUCTOR INTEGRATED CIRCUITS

Analysis and design of power efficient semi-passive RFID tag

Che Wenyi, Guan Shuo, Wang Xiao, Xiong Tingwen, Xi Jingtian, Tan Xi, Yan Na and Min Hao

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Abstract: The analysis and design of a semi-passive radio frequency identification (RFID) tag is presented. By studying the power transmission link of the backscatter RFID system and exploiting a power conversion efficiency model for a multi-stage AC-DC charge pump, the calculation method for semi-passive tag's read range is proposed. According to different read range limitation factors, an intuitive way to define the specifications of tag's power budget and backscatter modulation index is given. A test chip is implemented in SMIC 0.18 μm standard CMOS technology under the guidance of theoretical analysis. The main building blocks are the threshold compensated charge pump and low power wake-up circuit using the power triggering wake-up mode. The proposed semi-passive tag is fully compatible to EPC C1G2 standard. It has a compact chip size of 0.54 mm2, and is adaptable to batteries with a 1.2 to 2.4 V output voltage.

Key words: RFIDsemi-passive tagpower conversion efficiencyAC--DC charge pumpwake-up circuit

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    Received: 18 August 2015 Revised: 22 February 2010 Online: Published: 01 July 2010

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      Che Wenyi, Guan Shuo, Wang Xiao, Xiong Tingwen, Xi Jingtian, Tan Xi, Yan Na, Min Hao. Analysis and design of power efficient semi-passive RFID tag[J]. Journal of Semiconductors, 2010, 31(7): 075013. doi: 10.1088/1674-4926/31/7/075013 Che W Y, Guan S, Wang X, Xiong T W, Xi J T, Tan X, Yan N, Min H. Analysis and design of power efficient semi-passive RFID tag[J]. J. Semicond., 2010, 31(7): 075013. doi:  10.1088/1674-4926/31/7/075013.Export: BibTex EndNote
      Citation:
      Che Wenyi, Guan Shuo, Wang Xiao, Xiong Tingwen, Xi Jingtian, Tan Xi, Yan Na, Min Hao. Analysis and design of power efficient semi-passive RFID tag[J]. Journal of Semiconductors, 2010, 31(7): 075013. doi: 10.1088/1674-4926/31/7/075013

      Che W Y, Guan S, Wang X, Xiong T W, Xi J T, Tan X, Yan N, Min H. Analysis and design of power efficient semi-passive RFID tag[J]. J. Semicond., 2010, 31(7): 075013. doi:  10.1088/1674-4926/31/7/075013.
      Export: BibTex EndNote

      Analysis and design of power efficient semi-passive RFID tag

      doi: 10.1088/1674-4926/31/7/075013
      • Received Date: 2015-08-18
      • Accepted Date: 2009-12-27
      • Revised Date: 2010-02-22
      • Published Date: 2010-07-05

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