基于傅立叶罗特曼透镜的多波束模拟波束形成

P. Turalchuk, I. Munina, A. Shitvov
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引用次数: 0

摘要

空间划分是现代无线网络中增加容量的一种流行方法。本文研究了一种基于傅立叶变换网络的简化波束形成网络,该网络的输出端口数小于天线阵列的单元数。结果表明,通过功率分频器将傅里叶变换网络的输出端口连接到相相的多个阵列单元,从而实现最近邻相位插值,可以在窄扫描扇区内保持波束的增益和宽度。因此,在需要少量正交光束跨越狭窄空间扇区的应用中,所提出的方法可以降低硬件复杂性。模拟了相位插值傅立叶波束形成网络的辐射方向图。天线的辐射模式已经测量,使用傅立叶罗特曼透镜与双向威尔金森功率分配器,这证实了模拟的趋势。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Analog Beamforming based on Fourier Rotman Lens for Multibeam Applications
Spatial division represents a popular approach to increasing capacity in modern wireless networks. This paper presents a study of a simplified beamforming network based on a Fourier transform network with the number of output ports lower than the number of the elements in the antenna array. It is shown that connecting the output ports of Fourier transform network via power dividers to several array elements in phase, thus implementing a nearest-neighbor phase interpolation, preserves the gain and width of the beams in a narrow scanning sector. Therefore, in applications where few orthogonal beams are required to span a narrow spatial sector, the proposed approach can offer reduction of the hardware complexity. The simulated radiation patterns for a phase interpolation Fourier beamforming network are demonstrated. The antenna radiation patterns have been measured, using a Fourier Rotman lens with 2-way Wilkinson power dividers, which confirmed the simulated trends.
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