While several mm‐wave and sub‐THz frequency bands are being proposed for next generation wireless systems to meet the increasing traffic demand, the electromagnetic properties of many common use materials at those frequencies still need to be determined. The evaluation of such properties is important for the design and deployment of future wireless networks. Recently, a simple method based on Fabry‐Pérot resonance has been proposed to address the need of easy material characterization at mm‐wave frequencies. In this study, the method has been improved and applied to the characterization of several materials at mm‐wave and sub‐THz frequencies, in order to assess its reliability, usability, and accuracy in practical cases. The method is shown to achieve a good accuracy level despite the very simple measurement setup and the great flexibility. However, some application limitations are highlighted and discussed in the paper. A method for electromagnetic material characterization based on an improved Fabry‐Pérot technique is presented.

中文翻译：

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改进的Fabry-Pérot电磁材料表征：应用和结果

虽然为下一代无线系统提出了几个毫米波和亚太赫兹频段，以满足不断增长的交通需求，但仍需要确定许多常用材料在这些频率下的电磁特性。评估此类属性对于未来无线网络的设计和部署非常重要。最近，已经提出了一种基于法布里-珀罗共振的简单方法，以满足在毫米波频率下容易表征材料的需求。在这项研究中，该方法已得到改进，并应用于毫米波和亚太赫兹频率下几种材料的表征，以便在实际情况下评估其可靠性，可用性和准确性。尽管测量设置非常简单且具有很大的灵活性，但该方法仍显示出较高的精度水平。但是，本文强调并讨论了一些应用程序局限性。提出了一种基于改进的Fabry-Pérot技术的电磁材料表征方法。