With the introduction of 5G communication systems operating in the mm-wave frequency range, new opportunities in terms of multimedia services and applications will become available. For this to happen, several technical challenges from an antenna standpoint need to be addressed. The achievements of high-gain characteristics and agile beamforming with wide-scan capabilities are the main targets of the ongoing research on mm-wave antenna arrays. In this paper, an up-to-date overview of antenna array technology for wireless communications at mm-wave frequencies is given. Particular focus is put on the review of the state-of-the art and most advanced antenna array concepts for point-to-point and point-to-multipoint radio links at said frequencies. Various figures of merit are assessed for a comprehensive analysis and bench marking of the technical solutions investigated in the presented survey.

中文翻译：

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毫米波频率下点对点和点对多点无线通信的天线阵列技术综述

随着在毫米波频率范围内运行的5G通信系统的引入，多媒体服务和应用方面的新机遇将变得可用。为此，从天线的角度出发，需要解决几个技术挑战。高增益特性和具有宽扫描能力的敏捷波束成形的成就是正在进行的毫米波天线阵列研究的主要目标。在本文中，给出了毫米波频率上用于无线通信的天线阵列技术的最新概述。特别关注的是对在所述频率下的点对点和点对多点无线电链路的最新技术和最先进的天线阵列概念的回顾。