论文标题
在微波频率上的环氧麦克尼石粉复合材料的介电常数和渗透率
Permittivity and permeability of epoxy-magnetite powder composites at microwave frequencies
论文作者
论文摘要
无线电，毫米和亚毫米级天文学实验以及遥感应用通常需要具有众所周知的电磁特性的可铸造吸收器来设计和实现校准目标。在这种情况下，我们使用两种易于市售的材料的不同比率制造并表征了两个样品：环氧树脂（Stycast 2850ft）和磁铁矿（$ \ Mathrm {Fe_ {3} O_ {4}} $）粉末。我们使用配备了一系列标准号角天线的VNA进行了从7 GHz到170 GHz的传输和反射测量。使用经验模型，我们分析了数据以从传输数据中提取复杂的介电常数和渗透率。然后，我们使用反射数据来验证结果。在本文中，我们介绍了样品制造程序，分析方法，参数提取管道以及两个具有不同环氧粉质量比的样品的结果。
Radio, millimetre and sub-millimetre astronomy experiments as well as remote sensing applications often require castable absorbers with well known electromagnetic properties to design and realize calibration targets. In this context, we fabricated and characterized two samples using different ratios of two easily commercially available materials: epoxy (Stycast 2850FT) and magnetite ($\mathrm{Fe_{3}O_{4}}$) powder. We performed transmission and reflection measurements from 7 GHz up to 170 GHz with a VNA equipped with a series of standard horn antennas. Using an empirical model we analysed the data to extract complex permittivity and permeability from transmission data; then we used reflection data to validate the results. In this paper we present the sample fabrication procedure, analysis method, parameter extraction pipeline, and results for two samples with different epoxy-powder mass ratios.
