In this article, we discuss the potential of radio frequency (RF) lens for ultra-wideband millimeter-wave (mmWave) systems. In terms of the beam squint, we compare the proposed RF lens antenna with the phase shifter-based array for hybrid beamforming. To reduce the complexities for fully digital beamforming, researchers have come up with RF lens-based hybrid beamforming. The use of mmWave systems, however, causes an increase in bandwidth, which gives rise to the beam squint phenomenon. We first find the causative factors for beam squint in the dielectric RF lens antenna. Based on the beamforming gain at each frequency, we verify that, in a specific situation, RF lens can be free of the beam squint effect. We use 3D electromagnetic analysis software to numerically interpret the beam squint of each antenna type. Based on the results, we present the degraded spectral efficiency by system-level simulations with 3D indoor ray tracing. Finally, to verify our analysis, we fabricate an actual RF lens antenna and demonstrate the real performance using a mmWave, NI PXIe, software-defined radio system.

翻译：在本篇文章中,我们讨论了超宽波(mmWave)系统的无线电频(RF)透镜(RF)透镜(RF)对超宽波(mmWave)系统的潜在作用。关于光束光谱(mmWave),我们比较了拟议的RF透镜天线与以相波成形的相向阵阵阵列。为了减少完全数字光成形的复杂程度,研究人员提出了基于RF透镜的混合波束。但是,使用毫米Wave系统导致带宽增加,从而导致波纹现象的增加。我们首先在电磁波透视天线天线中发现Bam 光亮的诱因因素。根据每个频率的成形收益,我们核实在特定情况下,RF透镜可以不受光束光谱效应的影响。我们使用3D电磁分析软件对每个天线型的光谱光谱光谱进行数字解释。根据结果,我们用3D室内射线追踪的系统模拟来显示已退化的光谱效率。最后,我们根据每个频率的光谱成型光谱分析,我们用一个实际的P-M-RF光线天线天线天线天线天线天线软件来构建一个实际的无线电系统,并展示真实的运行。