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首页> 外文期刊>Microwaves, Antennas & Propagation, IET >Design of electromagnetic wave absorber using periodic structure and method to broaden its bandwidth based on equivalent circuit-based analysis
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Design of electromagnetic wave absorber using periodic structure and method to broaden its bandwidth based on equivalent circuit-based analysis

机译：基于等效电路的电磁波吸收器的周期性结构设计和带宽扩展方法

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摘要

A new broadband electromagnetic wave absorber based on a periodic surface and a method to increase its absorption bandwidth is proposed. The proposed absorber structure shows broadband characteristics, and its bandwidth is improved by generating additional resonances through a reasonable approach. To provide an understanding of the logical design procedure, an analytical method to determine the sheet resistance and new equivalent circuit models for analysing the impedance are both presented. From the analysis, it is shown that the exact range of the sheet resistance corresponding to the desired absorption level can be efficiently estimated for the resonance of the structure. For the verification of this approach to obtain an efficient design, as well as the functionality of both the absorber and the proposed method, experimental results are demonstrated along with analytical and computational results. The final measured results using the proposed method show a broadband reflectivity response, with a fractional bandwidth of approximately 93% below -10 dB and a bandwidth increase of 17%.
机译：提出了一种新型的基于周期表面的宽带电磁波吸收器及其增加吸收带宽的方法。所提出的吸收器结构具有宽带特性，并且通过合理的方法产生额外的谐振来改善其带宽。为了提供对逻辑设计过程的理解，提出了一种确定薄层电阻的分析方法以及用于分析阻抗的新的等效电路模型。从分析中可以看出，对于结构的共振，可以有效地估计与所需吸收水平相对应的薄层电阻的精确范围。为验证此方法以获得有效的设计以及吸收器和所提出方法的功能，验证了实验结果以及分析和计算结果。使用所提出的方法的最终测量结果显示出宽带反射率响应，低于-10 dB的部分带宽约为93％，带宽增加了17％。

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