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A Numerically Efficient Technique for the Analysis of Metamaterial- and Metasurface-based Antennas

机译:一种分析超材料与逆向基于表面的天线的数值有效技术

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摘要

Metasurface-based antennas have received considerable recent attention in recent years because they are not only useful for designing new antennas, but for improving the performance of legacy designs as well. However, systematically designing these antennas is challenging because the antennas are usually multiscale in nature and they typically require a long time when simulated by using commercial solvers. In this work, we present a new approach for analyzing antennas that utilize Metasurfaces (MTSs) and Metamaterial (MTMs). The proposed method departs from the widely used technique based on an anisotropic impedance representation of the surface and relies on an equivalent medium approach instead. The principal advantage of the proposed approach is that such an equivalent medium representation can be conveniently inserted directly in commercial EM solvers, circumventing the need to develop special numerical EM simulation codes to handle metasurfaces. Several illustrative examples are presented in the paper to demonstrate the efficacy of the present approach when simulating MTS-and MTMbased antennas.
机译:近年来,基于元表面的天线最近受到了相当大的关注,因为它们不仅用于设计新天线,而且还用于提高遗留设计的性能。然而,系统地设计这些天线是具有挑战性的,因为天线通常本质上是多尺度,并且它们通常需要使用商业求解器模拟时长时间。在这项工作中,我们提出了一种用于分析利用Metasurfaces(MTS)和超材料(MTMS)的天线的新方法。所提出的方法基于表面的各向异性阻抗表示,从广泛使用的技术脱离,并依赖于等同的介质方法。所提出的方法的主要优点是这种等效介质表示可以方便地直接插入商业EM溶剂中,规避需要开发特殊的数值EM模拟码来处理元件。本文提出了几种说明性示例,以证明当模拟MTS和MTMBASED天线时本方法的功效。

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