A Free-Space Measurement Technique of Terahertz Dielectric Properties

被引：10

作者：

Zhang, Xiansheng ^{[1
]}

Chang, Tianying ^{[1
,2
]}

Cui, Hong-Liang ^{[2
]}

Sun, Zhonglin ^{[1
]}

Yang, Chuanfa ^{[1
]}

Yang, Xiuwei ^{[1
]}

Liu, Lingyu ^{[1
]}

Fan, Wei ^{[2
]}

机构：

[1] Shandong Acad Sci, Inst Automat, Jinan 250014, Shandong, Peoples R China

[2] Jilin Univ, Coll Instrumentat & Elect Engn, Changchun 130061, Jilin, Peoples R China

来源：

JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES | 2017年 / 38卷 / 03期

关键词：

Terahertz; Free space; Calibration; Transmission-only method; Initial value estimate; DETERMINING COMPLEX PERMITTIVITY; BROAD-BAND; MICROWAVE-FREQUENCIES; PERMEABILITY;

D O I：

10.1007/s10762-016-0341-2

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The free-space method for material dielectric characterization in the microwave band is extended to terahertz frequencies. By analyzing the advantages and disadvantages of the relative permittivity of the transmission/reflection method for non-magnetic materials, a fast calculation method using a transmission-only method is proposed. Based on the convergence analysis of the algorithm, a method to estimate the initial value is also proposed. Finally, through measurements of the permittivity of high-density polyethylene, polystyrene, polypropylene, and polymethyl methacrylate in the 325-500 GHz band, we verify the rationality of the algorithm and demonstrate its applicability. Through the combination of the two methods, the terahertz dielectric properties of a majority of flat non-conducting solid materials and non-polar liquid materials can be measured.

引用

页码：356 / 365

页数：10

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