In this paper, an attractive measurement technique is proposed to retrieve the broadband permittivity and permeability of the magneto-dielectric materials. The proposed technique is quite novel which mitigates the major problems associated with the conventional broadband RF material characterization techniques such as numerical instability and phase uncertainty when the length of the sample exceeds the integer multiple of half-wavelength. The approach adopted in this paper is quite unique as it alleviates the error normally caused by the sensitive phase measurement, since it only employs the relative amplitude of the scattering parameters, thus minimizing the measurement uncertainty. The proposed methodology here is based on the development of a unified scheme for the retrieval of dielectric and magnetic properties of magneto-dielectric samples, which is first tested for a number of reference samples using the numerically generated scattering coefficient data. Finally, the proposed technique is experimentally validated by measuring a number of standard samples over a broad microwave frequency range with the help of the coaxial line and the network analyzer. The dielectric and magnetic properties of samples retrieved using the proposed approach is always found to be in good agreement with their actual values available in the literature.

中文翻译：

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低损耗磁电介质样品宽带射频测试的简化方法

在本文中，提出了一种有吸引力的测量技术来检索磁电介质材料的宽带介电常数和磁导率。所提出的技术非常新颖，它减轻了与传统宽带射频材料表征技术相关的主要问题，例如当样本长度超过半波长的整数倍时数值不稳定性和相位不确定性。本文采用的方法非常独特，因为它减轻了通常由敏感相位测量引起的误差，因为它仅采用散射参数的相对幅度，从而最大限度地减少了测量不确定性。这里提出的方法是基于统一方案的开发，用于检索磁电介质样品的介电和磁特性，首先使用数值生成的散射系数数据对多个参考样品进行测试。最后，在同轴线和网络分析仪的帮助下，通过在宽微波频率范围内测量多个标准样品，对所提出的技术进行了实验验证。使用所提出的方法检索到的样品的介电和磁特性总是被发现与它们在文献中可用的实际值非常吻合。