对散射参数s11和s21的一般实验结果进行了理论分析——以i = 0.2, 0.4, 0.6的BaFe12- i Ce i O19/聚乙烯薄膜为例

IF 0.9 4区 工程技术 Q4 ENGINEERING, CHEMICAL
Y. Liu, M. Drew, Hexing Li, Yue Liu
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引用次数: 11

摘要

通常将反射损失应用于材料的做法是不正确的,因为它只能应用于薄膜。同时,主流的阻抗匹配理论也应该被波抵消理论所取代。本文的研究表明,复合材料薄膜的微波吸收实验数据可以用我们的新理论成功地进行理论分析。基于波加法模型,推导出了薄膜的散射参数s11和s21的计算公式,该模型明确区分了微波吸收机理与界面吸收机理和薄膜吸收机理。从新的角度对实验值、s 11和s 21的模式以及实验值模式之间的关系进行了定量和定性的再现和解释。为验证涉及大数据集的新理论而进行的这种具体的新分析清楚地表明,所得到的结论不仅对一个独特的系统有效,而且具有普遍的适用性。因此,新的理论得到了验证,并可用于揭示材料和器件的微波吸收机理。对比了以往应用的反射损耗和阻抗匹配方法的不足之处。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A theoretical analysis of the relationships shown from the general experimental results of scattering parameters s 11 and s 21 – exemplified by the film of BaFe12- i Ce i O19/polypyrene with i = 0.2, 0.4, 0.6
Abstract The common practice of applying reflection loss to material is incorrect as it can only be applied to film. Also the dominant theory of impedance matching should be replaced by wave cancellation theory. Here, we show that experimental data obtained from microwave absorption by the film of the titled composite can be successfully analyzed theoretically from our new theories. Formulae for the scattering parameters s 11 and s 21 of the film have been derived based on the wave addition model which clearly differentiates between microwave absorption mechanisms from interface and film. The experimental values, the patterns from s 11 and s 21, and the relationships between the patterns from the experimental values have been reproduced and interpreted both quantitatively and qualitatively from the new perspective. This specific new analysis for the verification of the new theory involving a large data set provides a clear indication that the conclusions obtained are not only valid for one unique system but are of general applicability. Thus, the new theory has been verified and can be used to reveal the mechanisms of microwave absorption by material and device. The successful interpretations are contrasted with the inadequacies of previous applied methods involving reflection loss and impedance matching.
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来源期刊
Journal of Microwave Power and Electromagnetic Energy
Journal of Microwave Power and Electromagnetic Energy ENGINEERING, CHEMICAL-ENGINEERING, ELECTRICAL & ELECTRONIC
CiteScore
2.50
自引率
6.70%
发文量
21
期刊介绍: The Journal of the Microwave Power Energy (JMPEE) is a quarterly publication of the International Microwave Power Institute (IMPI), aimed to be one of the primary sources of the most reliable information in the arts and sciences of microwave and RF technology. JMPEE provides space to engineers and researchers for presenting papers about non-communication applications of microwave and RF, mostly industrial, scientific, medical and instrumentation. Topics include, but are not limited to: applications in materials science and nanotechnology, characterization of biological tissues, food industry applications, green chemistry, health and therapeutic applications, microwave chemistry, microwave processing of materials, soil remediation, and waste processing.
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