平面阵列天线辐射方向图的合成

H.S.C. Wang
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引用次数: 3

摘要

在天基雷达靴透镜天线的点设计过程中,提出了一种能够同时控制平面相控阵主瓣形状和副瓣电平的通用辐射方向图合成技术。利用幂函数的某些极大极小性质,该方法不依赖于特殊数学函数的形状,因此适用于更广泛的数组类。在简要描述其原理后,该原理是基于同一作者对线性阵列开发的早期程序的扩展,该技术被应用于空间馈电透镜天线馈电阵列辐射方向图的合成。目标是在透镜表面获得尽可能接近的二维高斯照明函数,同时保持较低的副瓣电平,以尽量减少由于溢出引起的馈电损失。并对合成结果进行了讨论。
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Synthesis of radiation patterns of planar array antennas
In the course of developing a point design for a bootlace lens antenna for a space-based radar, a versatile radiation-pattern synthesis technique capable of simultaneously controlling the mainlobe shape and the sidelobe level has been developed for planar phased arrays. Utilizing certain minimax properties of a power functional, the method does not rely on the shape of special mathematical functions and is therefore applicable to a broader class of arrays. After a brief description of its principle, which is based on the extension of an earlier procedure developed for linear arrays by the same author, the technique is applied to the synthesis of the radiation pattern of the feed array of the space-fed lens antenna. The objective is to obtain as closely as possible a two-dimensional Gaussian illumination function on the lens surface, while at the same time maintaining a low sidelobe level to minimize the feed loss due to spillover. Results of this synthesis are presented and discussed.<>
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