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首页> 外文期刊>Microelectronics journal >A reliable demodulator and a power regulation circuit with an accurate and small-size voltage reference in UHF RFID
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A reliable demodulator and a power regulation circuit with an accurate and small-size voltage reference in UHF RFID

机译：UHF RFID中具有可靠且尺寸小的参考电压的可靠解调器和功率调节电路

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摘要

Key blocks used for Ultra High Frequency (UHF) Radio Frequency Identification (RFID) are designed in this paper, including a power regulation circuit and an ASK demodulator. The power regulation circuit is composed of a current mode voltage reference and a voltage regulator. The proposed current mode voltage reference is featured by the merits of small-size and high-accuracy. By optimizing the feedback factor of the voltage regulator, the chip size of the voltage reference is further reduced. The system design ensures the ASK demodulator has good performance in rejecting distortion and error-demodulation. Moreover, the threshold voltage compensation technology greatly improves the sensitivity of the demodulator. The proposed circuits have been fabricated under a SMIC 0.18 μm 2P4M EEPROM process. The power consumption of the voltage reference is 0.83 uW, the minimum operating voltage is 0.85 V, and the active area is 0.028 mm~2. The chip size of the ASK demodulator is 0.0078 mm2. All of the proposed circuits were verified in a full UHF RFID chip, and tested through a commercial reader. Under a wireless circumstance, the power regulation circuit provides a stable 1 V power supply for the chip. The ASK demodulator correctly translates a full set of inventory command sent by the reader. According to the demodulated command, the tag chip feeds back the required data to reader.
机译：本文设计了用于超高频（UHF）射频识别（RFID）的关键模块，包括功率调节电路和ASK解调器。功率调节电路由电流模式电压基准和电压调节器组成。拟议的电流模式参考电压具有体积小，精度高的特点。通过优化电压调节器的反馈系数，可以进一步减小电压基准的芯片尺寸。系统设计确保ASK解调器在抑制失真和误差解调方面具有良好的性能。而且，阈值电压补偿技术大大提高了解调器的灵敏度。所提出的电路是在SMIC 0.18μm2P4M EEPROM工艺下制造的。基准电压源的功耗为0.83 uW，最小工作电压为0.85 V，有效面积为0.028 mm〜2。 ASK解调器的芯片尺寸为0.0078 mm2。所有提议的电路均在完整的UHF RFID芯片中进行了验证，并通过商用阅读器进行了测试。在无线情况下，功率调节电路为芯片提供稳定的1 V电源。 ASK解调器可以正确翻译阅读器发送的全套清单命令。根据已解调的命令，标签芯片将所需的数据反馈给读取器。

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  • 来源
    《Microelectronics journal》 |2013年第2期|72-79|共8页
  • 作者

    Yongqian Du; Yiqi Zhuang; Xiaoming Li; Weifeng Liu; Zengwei Qi; Yue Yin;

  • 作者单位

    Xidian University, 2 South Taibai Road, Xian, Shaanxi 710071, China;

    Xidian University, 2 South Taibai Road, Xian, Shaanxi 710071, China;

    Xidian University, 2 South Taibai Road, Xian, Shaanxi 710071, China;

    Xidian University, 2 South Taibai Road, Xian, Shaanxi 710071, China;

    Xidian University, 2 South Taibai Road, Xian, Shaanxi 710071, China;

    Xidian University, 2 South Taibai Road, Xian, Shaanxi 710071, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    UHF RFID; voltage reference; regulator; ASK; demodulator; Tag;

    机译：超高频RFID;参考电压调节器问;解调器标签;

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