金属表面任意滚动型 RFID 探测标签天线的研究
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TH89 TN82

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国家自然科学基金(62071125)项目资助


Research on the random rolling RFID detection tag antenna on metal surface
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    摘要:

    射频识别(RFID)技术在工业探测领域的应用不断深入,对 RFID 标签在多金属环境中的读取性能提出了更高的要求, 本文提出一种可以在金属表面任意滚动的高效率 RFID 标签天线。 所设计的滚动型标签天线是由倒 F 天线(IFA)进化而成,天 线采用了呈柱状布局的 4 个辐射臂,其中一组相对的两臂通过馈电面与同轴线芯线相连,另一组相对两臂与同轴线外导体相 连,一开槽的矩形辅助面置于四个辐射臂中心。 标签天线体积为 11. 3 mm×11. 3 mm×77. 5 mm,在金属平面上各种状态滚动时 中心频率变化范围为 897~ 932 MHz, | S11 |≤-10 dB 的带宽范围为 3. 5~ 8 MHz,天线辐射效率达到 70% 。 该无源标签天线具有 可以在金属背景环境中任意滚动、小型化、高效率等优势,无源标签天线与温度传感器芯片相连,可用于工业物联网复杂环境温 度探测。

    Abstract:

    The application of radio frequency identification (RFID) technology is becoming wider and wider in the field of industrial detection. The performance of RFID tags in multi-metal environments is also required to be higher and higher. This article proposes a high-efficiency RFID tag antenna that can roll arbitrarily on metal surfaces. The designed tag antenna evolves from the inverted F antenna (IFA). The antenna uses four radiating arms in the columnar layout. One set of opposite arms is connected to the coaxial inner conductor through the feed plane, the other opposite two arms are connected with the outer conductor of the coaxial line, and a slotted rectangular auxiliary plane is placed in the four radiating arms. The overall size of the tag antenna is 11. 3 mm×11. 3 mm×77. 5 mm, the frequency range is 897~ 932 MHz when rolling in various positions on a metal plane, the bandwidth range of | S11 | ≤-10 dB is 3. 5 ~ 8 MHz, and the antenna radiation efficiency reaches 70% . The tag antenna has the advantages of rolling freely in a metal plane, miniaturization, and high efficiency. The proposed tag antenna is connected with the temperature sensor chip and can be used for temperature detection in the complex environment of the industrial internet of things.

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袁家德,孟宪杰.金属表面任意滚动型 RFID 探测标签天线的研究[J].仪器仪表学报,2021,(11):115-122

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  • 在线发布日期: 2023-06-28
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