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毫米波频段材料介电特性计量研究

郭闻 徐浩 梁伟军 刘科 贾超 高秋来

郭闻,徐浩,梁伟军,等. 毫米波频段材料介电特性计量研究[J]. 计量科学与技术,2021, 65(5): 14-19, 45 doi: 10.12338/j.issn.2096-9015.2020.9020
引用本文: 郭闻,徐浩,梁伟军,等. 毫米波频段材料介电特性计量研究[J]. 计量科学与技术,2021, 65(5): 14-19, 45 doi: 10.12338/j.issn.2096-9015.2020.9020
GUO Wen, XU Hao, LIANG Weijun, LIU Ke, JIA Chao, GAO Qiulai. Measurement of Dielectric Properties of Materials in Millimeter-Wave Frequency Range[J]. Metrology Science and Technology, 2021, 65(5): 14-19, 45. doi: 10.12338/j.issn.2096-9015.2020.9020
Citation: GUO Wen, XU Hao, LIANG Weijun, LIU Ke, JIA Chao, GAO Qiulai. Measurement of Dielectric Properties of Materials in Millimeter-Wave Frequency Range[J]. Metrology Science and Technology, 2021, 65(5): 14-19, 45. doi: 10.12338/j.issn.2096-9015.2020.9020

毫米波频段材料介电特性计量研究

doi: 10.12338/j.issn.2096-9015.2020.9020
基金项目: 国家自然科学基金青年基金资助项目(11802300);国家科技部重点研发计划项目(2017YFF0204704)
详细信息
    作者简介:

    郭闻(1997-),中国计量科学研究院硕士研究生,研究方向:材料高频电磁参数计量,邮箱:guowen@nim.ac.cn

    通讯作者:

    徐浩(1990-),中国计量科学研究院副研究员,研究方向:材料高频电磁参数计量,邮箱:xuhao@nim.ac.cn

Measurement of Dielectric Properties of Materials in Millimeter-Wave Frequency Range

  • 摘要: 系统地开展了毫米波频段材料复介电常数的测量方法研究。基于自由空间法采用两步校准方法和时域选通技术,实现了75~110 GHz宽频范围内材料介电特性的测量表征,并基于准光Fabry-Perot谐振原理,研制具有高品质因数的开放式谐振腔,利用高斯波束理论建立了材料介电特性的反演模型,尤其适用于低损耗介质材料的准确测量。通过对比聚氯乙烯(PVC)与熔融石英材料的测量结果,验证了两种测量方法的一致性。此外,针对多层材料提出了去嵌入测量算法,实现了液晶材料各向异性介电常数的表征。
  • 图  1  自由空间法实验装置示意图

    Figure  1.  Scheme of the measurement setup for the free-space method

    图  2  自由空间法测量结果

    Figure  2.  Measurement results of the free-space method

    图  3  准光开放式谐振腔法实验装置示意图

    Figure  3.  Scheme of the measurement setup for the quasi-optical open resonant cavity method

    图  4  两种方法的测试结果比对

    Figure  4.  Comparison of the measurement results between the two methods

    图  5  定向排列的液晶样品与在电场下测量示意图

    Figure  5.  Scheme of oriented liquid crystal sample with measurements under electric field

    图  6  液晶样品垂直介电常数($ {\varepsilon }_{{\rm{r}}\perp } $)与平行介电常数($ {\varepsilon }_{{\rm{r}}\parallel } $)

    Figure  6.  The perpendicular ($ {\varepsilon }_{{\rm{r}}\perp } $) and parallel ($ {\varepsilon }_{{\rm{r}}\parallel } $) permittivity of LC

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出版历程
  • 网络出版日期:  2021-05-28
  • 刊出日期:  2021-06-24

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