基于电路模拟和电容电路的宽带吸收器的比较分析

Gaurav Singh, Saptarshi Ghosh
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引用次数: 0

摘要

本文提出了两种基于电路模拟(CA)和电容电路(CC)概念的宽带吸收器结构。所提出的每一种设计都是由多个电阻层组成的,这些电阻层由一个空气间隔器隔开,并由一个接地面终止。CA结构采用印刷在介电基板上的方形电阻环,而CC几何结构则采用方形电阻贴片。所提出的CA吸收体具有142.08%的吸收带宽(吸收率>为90%),但其厚度较大(0.296Ao, λo为中心吸收频率对应的波长)。另一方面,CC吸收器提供76.41%的吸收带宽,对应于更薄的衬底(0.135λo)。这两种设计都是偏振无关和角度稳定的,尽管具有小的轮廓,低电阻和简单的设计。还对CA和CC概念进行了比较,从而突出了它们彼此之间的性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Comparative Analysis between Circuit Analog and Capacitive Circuit based Broadband Absorbers
This paper presents two broadband absorber structures based on circuit analog (CA) and capacitive circuit (CC) concepts. Each of the proposed designs is made of multiple resistive layers separated by an air spacer and terminated by a ground plane. The CA structure employs square resistive loops printed on dielectric substrates, whereas square resistive patches are being used in the CC geometry. The proposed CA absorber exhibits 142.08% absorption bandwidth (for absorptivity> 90%) at the expense of a large thickness (0.296Ao, λo being the wavelength which corresponds to the central absorption frequency). On the other hand, the CC absorber provides 76.41% absorption bandwidth corresponding to a thinner substrate (0.135λo). Both the designs are polarization-independent and angularly stable, despite having small profile, low resistance, and simple design. A comparison has also been made between the CA and CC concepts, thereby highlighting their performances over one another.
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