Sufian Md Abu, Hussain Niamat, Choi Domin, Lee Sang-Min, Gil Sang-Keun, Kim Nam
Department of Information and Communication Engineering, Chungbuk National University, Cheongju, 28644, Republic of Korea.
Department of Intelligent Mechatronics Engineering, Sejong University, Seoul, 05006, Republic of Korea.
Sci Rep. 2024 Jul 15;14(1):16279. doi: 10.1038/s41598-024-67032-7.
This article presents the design and implementation of a dipole array antenna based on a radial waveguide power divider for millimeter-wave IoT sensing applications. The dipole array and radial waveguide power divider techniques are used in tandem to achieve high gain with omnidirectional radiation properties. The proposed antenna is comprised of eight non-uniform array dipole structures, a circular radiating loop, and shorting vias. The one-to-eight power divider is created with the shorting vias to feed the circularly arranged eight non-uniform dipole arrays simultaneously. The proposed antenna is simulated and manufactured on Rogers-RO3003C substrate with a thickness of 8 mils. Both simulated and tested results confirm that the proposed method enables the antenna to offer a quasi-omnidirectional pattern with a high peak gain of 5.42 dBi. The antenna offers an impedance bandwidth (S < ‒ 10 dB) of more than 1 GHz ranging from 27.93 to 29.13 GHz. Moreover, by optimizing the parameters of the power divider network the proposed antenna can be tuned between a wide bandwidth range of 14.53 GHz as the designed dipole array offering the operating bandwidth from 25.56 to 40.09 GHz. Due to its comprehensive set of performance attributes, particularly for the quasi-omnidirectional radiation characteristics, the presented antenna is a viable candidate for the 5G millimeter wave wireless IoT sensing applications. Additionally, this work will accommodate other researchers to explore the proposed method for developing high-gain omnidirectional antennas for millimeter-wave applications.
本文介绍了一种基于径向波导功率分配器的偶极子阵列天线的设计与实现，用于毫米波物联网传感应用。偶极子阵列和径向波导功率分配器技术协同使用，以实现具有全向辐射特性的高增益。所提出的天线由八个非均匀阵列偶极子结构、一个圆形辐射环和短路过孔组成。通过短路过孔创建一分八功率分配器，以同时馈电圆形排列的八个非均匀偶极子阵列。所提出的天线在厚度为8密耳的Rogers-RO3003C基板上进行了仿真和制造。仿真和测试结果均证实，所提出的方法使天线能够提供具有5.42 dBi高峰值增益的准全向方向图。该天线的阻抗带宽（S < -10 dB）超过1 GHz，范围从27.93至29.13 GHz。此外，通过优化功率分配器网络的参数，所提出的天线可以在14.53 GHz的宽带范围内进行调谐，因为所设计的偶极子阵列提供了从25.56至40.09 GHz的工作带宽。由于其全面的性能属性，特别是对于准全向辐射特性，所提出的天线是5G毫米波无线物联网传感应用的可行候选方案。此外，这项工作将有助于其他研究人员探索所提出的方法，以开发用于毫米波应用的高增益全向天线。
