| RFID标签引脚阻抗的建模与计算 |
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| 引用本文： | 范准,陶波,尹周平,等.RFID标签引脚阻抗的建模与计算[J].电子工艺技术,2014(2):63-65,106. |
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| 作者姓名： | 范准 陶波 尹周平 等 |
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| 作者单位： | 华中科技大学数字制造装备与技术国家重点实验室,湖北武汉430074 |
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| 基金项目： | 国家重大专项基金项目（项目编号2012ZX04010-071）. |
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| 摘 要： | 射频识别(RFID)标签的封装中,芯片与天线靠各向异性导电胶(ACA)连接。ACA的性质导致了芯片的引脚与天线连接处会有较大的阻抗,影响了标签的电参数,会对标签读写距离产生不利的影响。分析了芯片引脚处阻抗对标签的电性能的影响,对该处电阻与寄生电容进行了建模和计算。最后,依据理论计算了一款天线的引脚阻抗,并据此对该天线进行了优化与测试,验证了理论的正确性。
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| 关 键 词： | RFID封装 各向异性导电胶 芯片 阻抗 天线优化 读写距离 |
Research on Pin Impedance of RFID Tags Packaging With ACA |
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| FAN Zhun,TAO Bo,YIN Zhou-pin,JIANG Xue-kang.Research on Pin Impedance of RFID Tags Packaging With ACA[J].Electronics Process Technology,2014(2):63-65,106. |
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| Authors: | FAN Zhun TAO Bo YIN Zhou-pin JIANG Xue-kang |
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| Affiliation: | ( State Key Lab of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan 430074, China ) |
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| Abstract: | In the packaging of radio frequency identification （RFID） tags, IC and antenna are interconnected with anisotropic conductive adhesive （ACA）, the property of ACA will led to a impedance at the pins of IC, and will affect the electrical parameters of the tag, which adversely affect the reading distance of tags. Analyzed how pin impedance affect the electrical properties of RFID tags, theoretically explained how the resistance and parasitic capacitance formed, and how can they be calculated. Finally, based on the theory calculated and optimized an antenna, the test results have verified the correctness of the theory. |
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| Keywords: | RFID packaging ACA IC Impedance Antenna optimizing Reading distance |
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