| 一种用于无源UHF RFID应答器的阻抗匹配方法 |
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| 引用本文： | 陈力颖,毛陆虹,吴顺华,郑轩. 一种用于无源UHF RFID应答器的阻抗匹配方法[J]. 半导体学报, 2008, 29(3): 516-520 |
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| 作者姓名： | 陈力颖 毛陆虹 吴顺华 郑轩 |
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| 作者单位： | 天津大学电子信息工程学院,天津,300072;天津大学电子信息工程学院,天津,300072;天津大学电子信息工程学院,天津,300072;天津大学电子信息工程学院,天津,300072 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 提出了一种可以在915MHz ISM频带下工作的、符合ISO/IEC 18000-6B标准的无源UHF RFID应答器的阻抗匹配方法.该UHF RFID应答器具有复数阻抗并从射频电磁场接收能量.该阻抗匹配方法利用天线的寄生电感,通过调整反向散射电路的电容来改变匹配网络的容抗,从而实现ASK调制.而且,该阻抗匹配方法在阅读器、天线与应答器之间达到了最大的功率传输.采用该阻抗匹配方法的应答器芯片通过支持肖特基二极管和EEPROM的Chartered 0.35μm 2P4M CMOS工艺进行流片,经测试其工作距离约为4m.
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| 关 键 词： | 阻抗匹配 RFID 无源应答器 反向散射电路 |
| 文章编号： | 0253-4177(2008)03-0516-05 |
| 修稿时间： | 2007-07-16 |
A Novel Impedance Matching Approach for Passive UHF RFID Transponder ICs |
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| Chen Liying,Mao Luhong,Wu Shunhua and Zheng Xuan. A Novel Impedance Matching Approach for Passive UHF RFID Transponder ICs[J]. Chinese Journal of Semiconductors, 2008, 29(3): 516-520 |
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| Authors: | Chen Liying Mao Luhong Wu Shunhua Zheng Xuan |
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| Affiliation: | School of Electronic and Information Engineering,Tianjin University,Tianjin 300072,China;School of Electronic and Information Engineering,Tianjin University,Tianjin 300072,China;School of Electronic and Information Engineering,Tianjin University,Tianjin 300072,China;School of Electronic and Information Engineering,Tianjin University,Tianjin 300072,China |
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| Abstract: | This paper presents a novel impedance matching approach for passive UHF RFID transponder ICs,which are compatible with the ISO/IEC 18000-6B standard and operate in the 915MHz ISM band.The passive UHF RFID transponder with complex impedances is powered by received RF energy.The approach uses the parasitic inductance of the antenna to implement ASK modulation by adjusting the capacitive reactance of the matching network,which changes with the backscatter circuit.The impedance matching achieves maximum power t... |
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| Keywords: | impedance matching RFID passive transponder backscatter circuit |
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