Perturbation Method to Measure Complex Permittivity of Low Loss Dielectric Material by Stripline Resonant Cavity

摘要：

The paper mainly discusses the perturbation method to the measurement of complex permittivity by using stripline resonant cavity. The theory of perturbation is detailedly analyzed. A stripline cavity used to measure complex permittivity below 2GHz is also designed and the working frequency range is from 0.5GHz to 7.5GHz. Samples with different complex permittivity are used to the simulative computations. The range of permittivity is 1.1~10. The range of loss angle tangent is 5.0e-4~5.0e-2. The shifts of resonant frequencies and unloaded quality factors of the stripline resonant cavity after the sample is loaded are simulated by applying Matlab software. The simulative results are analyzed. The analysis shows that the shifts are big enough to be measured and the perturbation method by using stripline cavity to the measurement of complex permittivity is feasible. It is also easy to put samples into the stripline resonant cavity.

关键词： Perturbation method Low loss dielectric material Stripline resonant cavity Complex permittivity Microwave measurement

作者: Li En Li Zhongping He Fengmei Guo Gaofeng Zhang Qishao

作者单位: School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu, Aerospace Research Institute of Materials & Processing Technology, Beijing, 100076, China

会议类型: 国际会议

会议名称: 第七届国际测试技术研讨会

会议地点: 北京

会议语种:英文

在线出版日期: 2007-08-05（万方平台首次上网日期，不代表论文的发表时间）