上海大学学报(自然科学版) ›› 2017, Vol. 23 ›› Issue (5): 674-681.doi: 10.12066/j.issn.1007-2861.1673

• • 上一篇    下一篇

片状介质材料复介电常数优化计算及测量

周建军, 张宁, 颜锦奎   

  1. 上海大学通信与信息工程学院, 上海 200444
  • 收稿日期:2015-10-19 出版日期:2017-10-30 发布日期:2017-10-30
  • 通讯作者: 颜锦奎(1965—), 男, 副教授, 博士, 研究方向为微波介质测量. E-mail: jkyan@shu.edu.cn
  • 作者简介:颜锦奎(1965—), 男, 副教授, 博士, 研究方向为微波介质测量. E-mail: jkyan@shu.edu.cn
  • 基金资助:

    上海市重点学科建设资助项目(S30108); 上海市委重点实验室资助项目(08DZ2231100)

Optimal computation and measurement of permittivity of flake dielectric materials

ZHOU Jianjun, ZHANG Ning, YAN Jinkui   

  1. School of Communication and Information Engineering, Shanghai University, Shanghai 200444, China
  • Received:2015-10-19 Online:2017-10-30 Published:2017-10-30

摘要:

采用终端短路同轴开口波导技术, 将开口同轴波导作为传感器, 测量样品加载时的复反射系数, 运用优化迭代反演求得待测材料的相对介电常数. 详细介绍了所采用的理论模型和测量系统, 测量了一些常见介质材料的复反射系数, 复反射系数参考值与理论计算值基本吻合, 证明了该方法的合理性及可行性.

关键词: 复反射系数, 相对介电常数, 优化迭代方法, 开口同轴波导

Abstract:

Based on an open-ended flanged coaxial probe technique, this paper measures complex permittivity of flake dielectric materials loading at the end of a probe. The method compares measured values and theoretically calculated values, the measured values being processed by optimization iteration computation. This paper introduces a theoretical model and the measurement system in detail. Feasibility and rationality of the presented method are shown by measuring some common materials.

Key words: complex reflection coefficient, optimization iterations method, relative dielectric constant, open-ended coaxial probe