Design and optimization of multi-faceted reflectarrays for satellite applications

The 8th European Conference on Antennas and Propagation (EuCAP 2014) Pub Date : 2014-04-06 DOI:10.1109/EUCAP.2014.6902047

Min Zhou, S. Sorensen, P. Meincke, E. Jørgensen

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引用次数: 11

Abstract

The design and optimization of multi-faceted reflect-arrays for satellite applications are presented. The objective of this work is to investigate the performance of a multi-faceted reflectarray designed using a direct optimization technique. To this end, a single-layer multi-faceted reflectarray, that produces a contoured beam for a European coverage in a bandwidth of 17% has been designed. The performance is compared to that of a planar reflectarray as well as a shaped reflector. In the considered frequency range, the co-polar minimum directivity within the coverage of the multi-faceted reflectarray surpasses that of its planar counterpart with more than 1dB. Compared to the shaped reflector, the difference between the co-polar minimum directivity of the multi-faceted reflectarray and the shaped reflector is only 0.3 dB. To improve the cross-polar radiation of the multi-faceted reflectarray, cross-polar suppression is included in the optimization and the minimum cross polar discrimination of the optimized reflectarray is improved with 2.3dB without any degradation of the co-polar radiation.

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卫星多面反射镜的设计与优化

介绍了卫星多面反射阵列的设计与优化。这项工作的目的是研究使用直接优化技术设计的多面反射镜的性能。为此，设计了一种单层多面反射镜，可以产生覆盖欧洲17%带宽的轮廓波束。将其性能与平面反射镜和形状反射镜进行了比较。在考虑的频率范围内，多面反射面覆盖范围内的共极最小指向性超过其平面对应的共极最小指向性超过1dB以上。与形反射器相比，多面反射器与形反射器的共极最小指向性差仅为0.3 dB。为了改善多面反射阵的交叉极辐射，优化中加入了交叉极抑制，优化后的反射阵的最小交叉极分辨提高了2.3dB，同时不降低共极辐射。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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The 8th European Conference on Antennas and Propagation (EuCAP 2014)

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