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Estimation methods to extract complex permittivity from transmission coefficient in the terahertz band
Optical and Quantum Electronics ( IF 3 ) Pub Date : 2021-07-22 , DOI: 10.1007/s11082-021-03087-4
Chuang Yang 1, 2, 3, 4 , Jian Wang 1, 2 , Cheng Yang 1, 2
Affiliation  

In this paper, the characteristics of the transmission coefficient (S\(_{21}\)) measured in free-space at terahertz frequencies are analyzed. The analysis results are used to estimate the permittivity of the material under test, and the estimated permittivity is adopted as an initial-value for the iterative algorithm to extract the complex permittivity of the material from the S\(_{21}\). The iterative extraction technique based on the estimation is efficient, while the iterative extraction technique without the estimation is inefficient. Various known materials in the literature are used to validate the technique in the terahertz band.



中文翻译:

从太赫兹波段传输系数中提取复介电常数的估计方法

在本文中,分析了在太赫兹频率下在自由空间中测量的透射系数(S \(_{21}\))的特性。分析结果用于估计被测材料的介电常数,并采用估计的介电常数作为迭代算法的初始值,从S \(_{21}\) 中提取材料的复介电常数。基于估计的迭代提取技术是有效的,而没有估计的迭代提取技术是低效的。文献中的各种已知材料用于验证太赫兹波段中的技术。

更新日期:2021-07-22
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