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标签分布疏密状态变化情形下超高频天线设计方法研究

佐磊 曹雪兵 朱良帅 丁雨晴 孙梦婷

佐磊, 曹雪兵, 朱良帅, 丁雨晴, 孙梦婷. 标签分布疏密状态变化情形下超高频天线设计方法研究[J]. 电子与信息学报, 2023, 45(1): 158-167. doi: 10.11999/JEIT211281
引用本文: 佐磊, 曹雪兵, 朱良帅, 丁雨晴, 孙梦婷. 标签分布疏密状态变化情形下超高频天线设计方法研究[J]. 电子与信息学报, 2023, 45(1): 158-167. doi: 10.11999/JEIT211281
ZUO Lei, CAO Xuebing, ZHU Liangshuai, DING Yuqing, SUN Mengting. Research on the Design Method of UHF Antenna under the Condition of Changing Tag Distribution Density[J]. Journal of Electronics & Information Technology, 2023, 45(1): 158-167. doi: 10.11999/JEIT211281
Citation: ZUO Lei, CAO Xuebing, ZHU Liangshuai, DING Yuqing, SUN Mengting. Research on the Design Method of UHF Antenna under the Condition of Changing Tag Distribution Density[J]. Journal of Electronics & Information Technology, 2023, 45(1): 158-167. doi: 10.11999/JEIT211281

标签分布疏密状态变化情形下超高频天线设计方法研究

doi: 10.11999/JEIT211281
基金项目: 国家自然科学基金(61971175, 51777050)
详细信息
    作者简介:

    佐磊:男,副教授,硕士生导师,研究方向为射频识别技术、物联网技术、信号处理及智能电网等

    曹雪兵:男,硕士生,研究方向为射频识别技术和抗金属标签天线

    朱良帅:男,硕士生,研究方向为射频识别技术和物联网技术

    丁雨晴:女,硕士生,研究方向为射频识别技术和信号处理

    孙梦婷:女,硕士生,研究方向为射频识别技术和标签天线设计

    通讯作者:

    佐磊 benzl0313@162.com

  • 中图分类号: TN828; TP391.45

Research on the Design Method of UHF Antenna under the Condition of Changing Tag Distribution Density

Funds: The National Natural Science Foundation of China (61971175, 51777050)
  • 摘要: 针对标签分布疏密程度的变化会导致其天线与负载的阻抗匹配关系改变进而影响系统性能的问题。该文结合电磁波传播理论和射频识别(RFID)工作原理,导出了标签分别处于稀疏和密集分布状态下的RFID系统通信链路模型;结合变压器模型和二端口网络分析方法,推导了标签密集分布状态时标签天线的互阻抗表达式;利用功率传输系数和反向散射调制因子,分析了标签分布疏密程度对RFID系统性能的影响;基于加载条匹配原理,提出一种适用于分布疏密状态变化情形的标签天线优化设计方法。仿真实验和实际测量结果表明,标签密集分布时,改进标签的性能较原型标签提升16%;标签稀疏分布时,改进标签的性能达到原型标签的96%。
  • 图  1  双标签密集布放及其等效二端口网络模型

    图  2  标签稀疏布放时传输系数与标签间距关系

    图  3  标签密集布放时传输系数与标签间距关系

    图  4  基于加载条匹配的天线模型及等效电路

    图  5  标签天线仿真模型图

    图  6  加载条参数变化对天线的影响

    图  7  双标签仿真模型及仿真结果

    图  8  标签调制因子随标签间距变化图

    图  9  标签性能测试实验场景

    图  10  标签返回信号强度随$ \theta $的变化

    图  11  标签群读实验

    图  12  标签读取率

    表  1  密集环境下标签群读实验

    标签数量n(枚)标签1标签2标签3
    9789
    1281010
    15101112
    18121415
    21131618
    下载: 导出CSV

    表  2  稀疏环境下标签群读实验

    标签数量n(枚)标签1标签2标签3
    9987
    121198
    1513139
    18161512
    21181714
    下载: 导出CSV
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  • 被引次数: 0
出版历程
  • 收稿日期:  2021-11-17
  • 录用日期:  2022-05-24
  • 修回日期:  2022-05-17
  • 网络出版日期:  2022-05-27
  • 刊出日期:  2023-01-17

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