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首页> 外文期刊>Applied Computational Electromagnetics Society journal >Analysis, Design and Demonstration of a Dual-Reflectarray Antenna in Ku-band for European Coverage
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Analysis, Design and Demonstration of a Dual-Reflectarray Antenna in Ku-band for European Coverage

机译：用于欧洲覆盖的Ku波段双反射阵列天线的分析，设计和演示

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摘要

An accurate technique has been proposed for the analysis of dual-reflectarray antennas, which takes into account the angle of incidence of the field impinging on main reflectarray cells. The technique has been applied to the analysis and design of a contoured beam antenna in Ku-band that provides a European coverage. The reflected field on the sub-reflectarray is computed using Spectral-Domain Method of Moments assuming local periodicity, as customary. The subreflectarray is divided in groups of elements and the radiation from each group is used to compute the incident and reflected fields on the main reflectarray cells. Different degrees of accuracy can be achieved depending on the number of groups considered. A 50-cm antenna demonstrator has been manufactured and measured in a compact range. The measured radiation patterns are in good concordance with the simulations and practically fulfill the coverage requirements with a cross-polar discrimination better than 25 dB in the frequency band 12.975 GHZ - 14.25 GHz.
机译：已经提出了一种用于分析双反射阵列天线的精确技术，该技术考虑了入射在主反射阵列单元上的场的入射角。该技术已应用于分析和设计Ku波段的等高线波束天线，提供欧洲覆盖范围。通常，使用假定局部周期性的光谱域矩量法来计算子反射阵列上的反射场。子反射阵列分为元素组，每组的辐射用于计算主反射阵列单元上的入射场和反射场。根据所考虑的组数，可以实现不同程度的准确性。已经制造了一个50厘米的天线演示器，并在紧凑的范围内对其进行了测量。在12.975 GHZ-14.25 GHz频段内，测得的辐射方向图与模拟非常吻合，并且实际上满足了覆盖要求，且交叉极化识别度优于25 dB。

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