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Microstrip transmission line model‐fitting approach for characterization of textile materials as dielectrics and conductors for wearable electronics

机译:微带传输线模型拟合方法,用于将纺织材料表征为可穿戴电子设备的电介质和导体

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摘要

Characterization of unconventional materials is essential in the field of microwave engineering. In this study, we present a method for the microwave characterization of conductive and nonconductive textile materials. Our approach is based on fitting the material parameters of a numerical microstrip transmission line model so that the simulated signal transmission properties match with the data we measure from implemented test lines. Unlike many conventional test structures, such as cavity resonators and waveguides, microstrip lines can be readily manufactured in textile technology with rather relaxed tolerances in the fabrication process. In addition, our method provides estimates for all three key material parameters: frequency-dependent relative permittivity and loss tangent of the nonconductive line substrate and the bulk conductivity of the strip conductor. For validation, we have characterized conventional microwave laminates and compared the data with the datasheets and literature and used our parameter estimates for the textile materials to optimize fully textile-based low-pass filters. Overall, the results confirm the applicability of our method for microwave engineering with textile materials.
机译:非常规材料的表征在微波工程领域至关重要。在这项研究中,我们提出了一种对导电和非导电纺织材料进行微波表征的方法。我们的方法基于拟合数字微带传输线模型的材料参数,以使模拟信号传输特性与我们从已实施测试线测量的数据相匹配。与许多传统的测试结构(例如腔谐振器和波导)不同,微带线可以很容易地用纺织技术制造,在制造过程中具有相当宽松的公差。此外,我们的方法还提供了所有三个关键材料参数的估计值:与频率有关的相对介电常数和非导线衬底的损耗角正切,以及带状导体的整体电导率。为了进行验证,我们对传统的微波层压板进行了表征,并将数据与数据表和文献进行了比较,并使用我们对纺织品材料的参数估算值来优化完全基于纺织品的低通滤波器。总体而言,结果证实了我们的方法在纺织材料微波工程中的适用性。

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