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Low-cost low-power UHF RFID tag with on-chip antenna

Xi Jingtian, Yan Na, Che Wenyi, Xu Conghui, Wang Xiao, Yang Yuqing, Jian Hongyan and Min Hao

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Abstract: This paper presents an EPC Class 1 Generation 2 compatible tag with on-chip antenna implemented in the SMIC 0.18 μm standard CMOS process. The UHF tag chip includes an RF/analog front-end, a digital base-band, and a 640-bit EEPROM memory. The on-chip antenna is optimized based on a novel parasitic-aware model. The rectifier is optimized to achieve a power conversion efficiency up to 40% by applying a self-bias feedback and threshold compensation techniques. A good match between the tag circuits and the on-chip antenna is realized by adjusting the rectifier input impedance. Measurements show that the presented tag can achieve a communication range of 1 cm with 1 W reader output power using a 1 × 1 cm2 single-turn loop reader antenna.

Key words: RFID

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    Received: 18 August 2015 Revised: 26 February 2009 Online: Published: 01 July 2009

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      Xi Jingtian, Yan Na, Che Wenyi, Xu Conghui, Wang Xiao, Yang Yuqing, Jian Hongyan, Min Hao. Low-cost low-power UHF RFID tag with on-chip antenna[J]. Journal of Semiconductors, 2009, 30(7): 075012. doi: 10.1088/1674-4926/30/7/075012 Xi J T, Yan N, Che W Y, Xu C H, Wang X, Yang Y Q, Jian H Y, Min H. Low-cost low-power UHF RFID tag with on-chip antenna[J]. J. Semicond., 2009, 30(7): 075012. doi: 10.1088/1674-4926/30/7/075012.Export: BibTex EndNote
      Citation:
      Xi Jingtian, Yan Na, Che Wenyi, Xu Conghui, Wang Xiao, Yang Yuqing, Jian Hongyan, Min Hao. Low-cost low-power UHF RFID tag with on-chip antenna[J]. Journal of Semiconductors, 2009, 30(7): 075012. doi: 10.1088/1674-4926/30/7/075012

      Xi J T, Yan N, Che W Y, Xu C H, Wang X, Yang Y Q, Jian H Y, Min H. Low-cost low-power UHF RFID tag with on-chip antenna[J]. J. Semicond., 2009, 30(7): 075012. doi: 10.1088/1674-4926/30/7/075012.
      Export: BibTex EndNote

      Low-cost low-power UHF RFID tag with on-chip antenna

      doi: 10.1088/1674-4926/30/7/075012
      • Received Date: 2015-08-18
      • Accepted Date: 2009-01-20
      • Revised Date: 2009-02-26
      • Published Date: 2009-07-10

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