Portable communication devices such as WLAN, WiMAX, LTE, ISM, and 5G utilize one or more of the triple bands at (2.3–2.7 GHz, 3.4–3.6 GHz, and 5–6 GHz) and suffer from the effect of multipath problems because they are used in urban regions. To date, no one has performed a review of the antennas used for these types of wireless communications. This study reviewed two types of microstrip antennas (slot and fractal) that have been reported by researchers (as a single element) using a survey that included the evaluation of several important specifications of the antennas in previous research, such as operating bandwidth, gain, efficiency, axial ratio bandwidth (ARBW), and size. The weaknesses in the design of all antennas were carefully identified to determine the most important challenges in the design of these antennas and name the most important limits in the design to be overcome in future research. This study also indicated some antennas that have circular polarization characteristics, the techniques used to generate the circular polarization characteristics, and the challenges. Finally, several suggestions as a guideline for antenna design and future work in designing antennas for Wi-Fi, LTE, and WiMAX communications, according to the market demands, and methods for overcoming the identified limits are presented.

诸如WLAN，WiMAX，LTE，ISM和5G之类的便携式通信设备利用一个或多个三频频段（2.3–2.7 GHz，3.4–3.6 GHz和5–6 GHz），并遭受多径问题的影响，因为它们用于城市地区。迄今为止，还没有人对用于这些类型的无线通信的天线进行过审查。这项研究回顾了研究人员（作为单个元素）报告的两种类型的微带天线（狭缝和分形），其中包括对先前研究中天线的几个重要规格的评估，例如工作带宽，增益，效率，轴向比率带宽（ARBW）和尺寸。仔细确定了所有天线设计中的弱点，以确定这些天线设计中最重要的挑战，并指出设计中最重要的限制，以便在将来的研究中克服。这项研究还指出了一些具有圆极化特性的天线，用于产生圆极化特性的技术以及挑战。最后，根据市场需求，提出了一些建议，作为天线设计和为Wi-Fi，LTE和WiMAX通信设计天线的未来工作的指南，并提出了克服已确定限制的方法。产生圆极化特性的技术以及挑战。最后，根据市场需求，提出了一些建议，作为天线设计和为Wi-Fi，LTE和WiMAX通信设计天线的未来工作的指南，并提出了克服已确定限制的方法。产生圆极化特性的技术以及挑战。最后，根据市场需求，提出了一些建议，作为天线设计和为Wi-Fi，LTE和WiMAX通信设计天线的未来工作的指南，并提出了克服已确定限制的方法。