Transverse radiation pattern of a slotted waveguide array radiating between finite height baffles in terms of a spectrum of two-dimensional solutions
Transverse radiation pattern of a slotted waveguide array radiating between finite height baffles in terms of a spectrum of two-dimensional solutions
复制标题
根据二维解的频谱，在有限高度挡板之间辐射的开槽波导阵列的横向辐射图
DOI：
10.1049/ip-h-2.1993.0008
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
P. Kildal
中科院分区：
文献类型：
--
作者：
K. Forooraghi;P. Kildal
在波导馈电槽阵列中，槽的周期性导致栅瓣偏离主平面，称为二阶光束。为了抑制这些波瓣，可以在阵列两侧使用平行板挡板。在本文中，分析了在有限高度的挡板之间辐射的纵向槽的线性阵列。通过傅立叶变换将三维 (3D) 场问题简化为二维 (2D) 问题。建立并求解了二维问题的积分方程。 3D 辐射方向图（包括挡板外部有限接地平面的影响）是根据 2D 解计算得出的。给出了各种挡板尺寸的结果，显示了二阶光束的衰减，并且计算的解决方案已通过测量得到验证。
In arrays of waveguide fed slots, the periodicity of the slots causes grating lobes off the principal planes, referred to as second-order beams. To suppress these lobes, parallel plates baffles) on both sides of the array can be used. In this paper, a linear array of longitudinal slots radiating between such baffles of finite height is analysed. The three-dimensional (3D) field problem is reduced to a two-dimensional (2D) problem via a Fourier transform. An integral equation for the 2D problem is developed and solved. The 3D radiation pattern, including the effect of a finite ground plane outside the baffles, is calculated from the 2D solutions. Results for various baffle dimensions, showing the attenuation of second-order beams, are presented and computed solution has been verified by measurements.