微波器件用有限元法测定稻壳/ Pcl复合材料透射系数和电场分布

A. Jimoh
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引用次数: 0

摘要

材料厚度是微波应用中选择材料时要考虑的一个因素。在蜂窝电话、卫星通信、雷达系统、全球定位系统、微波遥感系统等现代应用中,对微波技术有着广泛的需求。无机材料微波特性测定的实验和结果很多。近年来研究的重点转移到农业废弃物复合材料的微波应用上。在此基础上,本文主要利用有限元方法研究了矩形波导中不同尺寸稻壳/稻壳的微波透射系数和电场可视化。采用有限元法在x波段频率下测定了不同厚度稻壳/PCL复合材料的透射系数。稻壳/PCL复合材料的厚度分别为10、15、20、30和50 mm。透射系数模拟结果表明,50 mm复合材料在12 GHz处的透射系数最小,为0.148468;电场可视化结果表明,50 mm复合材料的电场强度最小。结果表明,50mm厚的样品吸收的辐射最大。根据所得的结果,所有的样品厚度都可以用于微波假人。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Determination of Transmission Coefficient and Electric Field Distribution of Rice Husk/ Pcl Composites Using Finite Element Method for Microwave Devices
Material thickness is one factor that is considered in the selection of materials for usage in microwave applications. The demand for microwaves technology is widely needed in modern applications such as cellular telephone, satellite communication, radar system, global positioning system, and microwave remote sensing systems. Experiments and results abound for microwave properties determination for inorganic materials. Focus has recently been shifted to agricultural waste composite for microwave application. It is on this basis that this work primarily focuses on investigates microwave transmission coefficients and electric field visualization of different rice husk/PCL sizes placed inside a rectangular waveguide using the finite element method (FEM). Determination of the transmission coefficient for different thickness of rice husk/PCL composites were performed at X-band frequency using FEM. The thicknesses for the rice husk/PCL composites simulated were 10, 15, 20, 30, and 50 mm. The results of the simulation for the transmission coefficient revealed that the 50 mm composites had the lowest value of 0.148468 for the transmission coefficient at 12 GHz while the electric field visualization showed that the 50 mm composites have the least value of electric field intensity. The results confirms that the 50 mm thick sample absorbs the highest radiation. Based on the results obtained, all sample thickness can be used for microwave dummies.
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