High-Isolation Array Antenna Design for 5G mm-Wave MIMO Applications

Abbasi, Nisar Ahmad; Virdee, Bal; Din, Iftikhar Ud; Ullah, Sadiq; Althuwayb, Ayman A; Rashid, Nasr; Soruri, Mohammad; See, Chan Hwang; Alibakhshikenari, Mohammad

Abstract

A low form-factor design of an eight-element antenna array is presented for 5G millimeter-wave MIMO applications. The design features modified circular patch radiators that achieve an impedance bandwidth of 2.6 GHz, covering frequencies from 37.7 GHz to 40.3 GHz. The radiating elements are strategically arranged on opposite sides of a common substrate and interleaved to significantly reduce mutual coupling between adjacent elements. This innovative technique effectively minimizes coupling between the array's radiators without the need of a decoupling structure. The MIMO antenna is fabricated on a low-loss Rogers-5880 substrate, with a thickness of 0.8 mm, a dielectric constant of 2.2, and a loss tangent of 0.0009, ensuring minimal signal loss and confirming the accuracy of simulation results. The inter-element isolation exceeds 25 dB, and the array provides a gain greater than 6 dBi, with a peak gain of 7.5 dBi at 39 GHz. This high gain enhances the antenna's ability to mitigate atmospheric attenuation at higher frequencies, making it highly suitable for 5G millimeter-wave applications Kyewords: Millimeter Wave (mmWave), antenna array, MIMO antennas, high Isolation, 5G communications. 1.Introduction The recent times have seen a rapid advancement in Recent advancements in mobile communication have driven a growing demand for increased capacity and wider bandwidth. Fifth generation (5G) technology addresses this demand by offering a transmission capacity of up to 20 Gbps and ultra-low latency of 1 ms, facilitating a range of applications such as virtual reality, autonomous vehicles, and smart cities. In addition to improving connectivity for millions of devices, 5G also enhances network reliability and performance. Many leading countries are leveraging the millimeter-wave (mmWave) spectrum for 5G wireless communication. With increasing congestion and reduced capacity in the sub-6 GHz frequency range, mmWave technology offers a viable solution by providing greater bandwidth for 5G networks. The advantages of mmWave technology include higher data rates, broader bandwidth, enhanced security, and reduced susceptibility to multipath fading, making it an attractive option for next-generation mobile communication systems. However, mmWave signals face challenges, particularly high path loss, which limits their

Citation

Abbasi, N. A., Virdee, B., Din, I. U., Ullah, S., Althuwayb, A. A., Rashid, N., Soruri, M., See, C. H., & Alibakhshikenari, M. (in press). High-Isolation Array Antenna Design for 5G mm-Wave MIMO Applications. Journal of Infrared, Millimeter and Terahertz Waves,

• Journal Article Type: Article
• Acceptance Date: Nov 21, 2024
• Deposit Date: Nov 26, 2024
• Print ISSN: 1866-6892
• Electronic ISSN: 1866-6906
• Publisher: Springer
• Peer Reviewed: Peer Reviewed
• Keywords: Millimeter Wave (mmWave), antenna array, MIMO antennas, high Isolation, 5G communications