Millimeter-wave (mmW) range for 5G communication is an innovative field of research that allows communication at ultra-high speed with low latency. Patch antennas due to their compact nature and multiband behavior are of great interest for 5G wireless communication. In this paper, triband H-shaped slotted monopole antenna is designed and its higher-order modes are presented in terms of resonant frequencies. The resultant impedance bandwidth confirms its triband characteristics by covering the frequency bands 27.25–28.04 GHz, 38.93–39.63 GHz and 58.22–61.38 GHz. The proposed antenna efficiently covers the two licensed 28 and 39 GHz bands for 5G device to device and cellular communication and one ISM 60 GHz band for Wi-Gig application. Antenna has maximum radiation efficiency of 82%, 91% and 88%, directivity of 6.94 dBi, 10.2 dBi and 8.82 dBi, and unidirectional radiation characteristics at 28/39/60 GHz, respectively. Henceforth, the proposed antenna finds its suitable application in 5G mobile communication and the results obtained from experiment and simulation are in good agreement. In addition, a lumped element RLC equivalent model of the design is explained and its results are compared with the proposed antenna.

5G 通信的毫米波 (mmW) 范围是一个创新的研究领域，可实现超高速低延迟通信。贴片天线由于其紧凑的特性和多频段行为而对 5G 无线通信非常感兴趣。在本文中，设计了三频 H 形开槽单极天线，并以谐振频率表示其高阶模式。由此产生的阻抗带宽通过覆盖 27.25–28.04 GHz、38.93–39.63 GHz 和 58.22–61.38 GHz 频段来确认其三频特性。拟议的天线有效地覆盖了用于 5G 设备到设备和蜂窝通信的两个许可的 28 GHz 和 39 GHz 频段以及一个用于 Wi-Gig 应用的 ISM 60 GHz 频段。天线的最大辐射效率分别为82%、91%和88%，方向性分别为6.94 dBi、10.2 dBi和8.82 dBi，和单向辐射特性分别在 28/39/60 GHz。此后，所提出的天线在 5G 移动通信中找到了合适的应用，并且实验和仿真的结果非常吻合。此外，还解释了设计的集总元件 RLC 等效模型，并将其结果与建议的天线进行了比较。