Abstract：
This research aimed to develop coding metamaterials to reduce the Radar Cross-Section (RCS) values in C- and Ku-band applications. Metamaterials on the macroscopic scale are commonly defined by effective medium parameters and are categorized as analogue. Therefore, coding metamaterials with various multi-layer and cuboid designs were proposed and investigated. A high-frequency electromagnetic simulator known as computer simulation technology was utilised throughout a simulation process. A one-bit coding metamaterial concept was adopted throughout this research that possesses \'0\' and \'1\' elements with 0 and π phase responses. Analytical simulation analyses were performed by utilising well-known Computer Simulation Technology (CST) software. Moreover, a validation was executed via a comparison of the phase-response properties of both elements with the analytical data from the High-Frequency Structure Simulator (HFSS) software. As a result, promising outcomes wherein several one-bit coding designs for multi-layer or coding metamaterials manifested unique results, which almost reached 0 dBm2 RCS reduction values. Meanwhile, coding metamaterial designs with larger lattices exhibited optimised results and can be utilised for larger-scale applications. Moreover, the coding metamaterials were validated by performing several framework and optimal characteristic analyses in C- and Ku-band applications. Due to the ability of coding metamaterials to manipulate electromagnetic waves to obtain different functionalities, it has a high potential to be applied to a wide range of applications. Overall, the very interesting coding metamaterials with many different sizes and shapes help to achieve a unique RCS-reduction performance.
摘要：
这项研究旨在开发编码超材料，以降低C波段和Ku波段应用中的雷达横截面（RCS）值。宏观尺度上的超材料通常由有效介质参数定义，并归类为类似物。因此,提出并研究了具有各种多层和长方体设计的编码超材料。在整个仿真过程中都使用了称为计算机仿真技术的高频电磁仿真器。在整个研究中采用了一位编码超材料概念，该概念具有具有0和π相位响应的\'0\'和\'1\'元素。利用众所周知的计算机仿真技术(CST)软件进行分析仿真分析。此外，通过将两种元素的相位响应特性与高频结构模拟器(HFSS)软件的分析数据进行比较,进行了验证.因此,有希望的结果，其中多层或编码超材料的几种一位编码设计表现出独特的结果，几乎达到了0dBm2的RCS降低值。同时,具有较大晶格的编码超材料设计表现出优化的结果，可用于更大规模的应用。此外，通过在C波段和Ku波段应用中执行几个框架和最佳特性分析，验证了编码超材料。由于编码超材料能够操纵电磁波以获得不同的功能，它具有很高的应用潜力。总的来说,具有许多不同尺寸和形状的非常有趣的编码超材料有助于实现独特的RCS减少性能。
