Design a Dual Polarizations MIMO Antenna Based on Decoupling Elements for 5G Smart-Phones

Q4 Biochemistry, Genetics and Molecular Biology Journal of Biomolecular Techniques Pub Date : 2023-04-01 DOI:10.51173/jt.v5i1.901

Haider Saad, Mahmood F. Mosleh, Raed Abd-Alhameed

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Abstract

This paper suggests a compact linear and circular polarization MIMO antenna for sub-6 GHz 5G smartphones. The proposed design can be divided into three parts: Firstly, a linear polarized dipole antenna is presented with dimensions of 1×33.7×32.5mm3 and exhibits an impedance bandwidth (IBW) of 3.24GHz ranging from 3.3GHz to 6.6GHz at S11˂-10dB. The second part includes a circular polarization CPW-Fed antenna with dimensions of 1×23.2×30mm3. The IBW of the CPW antenna is more than 4GHz, starting from 3.9GHz to more than 8GHz at an S11˂-10dB. The 3-dB axial ratio for the CP CPW antenna ranges from 4GHz to 7.38GHz. Finally, a combination of LP and CP antennas is presented to form a dual polarization MIMO system. A MIMO system consists of 5 elements; 4 elements are LP and 1 element is a CP antenna. The size of the MIMO system is 1×82.5×150mm3 printed on an FR-4 substrate. Two impedance bandwidths are found due to the use of two antenna types. The first one (S11, S22, S44, S55) equals 3.44GHz while the second (S33) equals 4.33GHz. HFSS is used for designing and simulating the proposed structures, while CST is used for verifying the results.

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基于解耦元件的5G智能手机双极化MIMO天线设计

本文提出了一种适用于sub-6 GHz 5G智能手机的紧凑型线性和圆极化MIMO天线。提出的设计可分为三个部分:首先，提出了一个尺寸为1×33.7×32.5mm3的线性极化偶极子天线，在S11小于-10dB时，其阻抗带宽(IBW)为3.24GHz，范围为3.3GHz ~ 6.6GHz。第二部分包括尺寸为1×23.2×30mm3的圆极化CPW-Fed天线。CPW天线的IBW大于4GHz，从3.9GHz开始，在S11的小于-10dB的情况下，IBW大于8GHz。CP - CPW天线的3db轴比范围为4GHz ~ 7.38GHz。最后，提出了LP天线和CP天线的组合构成双极化MIMO系统。MIMO系统由5个要素组成;4个单元是LP, 1个单元是CP天线。MIMO系统的尺寸是1×82.5×150mm3打印在FR-4基板上。由于使用两种天线类型，发现了两种阻抗带宽。第一个(S11, S22, S44, S55)等于3.44GHz，第二个(S33)等于4.33GHz。采用HFSS对所提出的结构进行设计和模拟，采用CST对结果进行验证。

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来源期刊

Journal of Biomolecular Techniques Biochemistry, Genetics and Molecular Biology-Molecular Biology

CiteScore

2.50

自引率

0.00%

发文量

期刊介绍： The Journal of Biomolecular Techniques is a peer-reviewed publication issued five times a year by the Association of Biomolecular Resource Facilities. The Journal was established to promote the central role biotechnology plays in contemporary research activities, to disseminate information among biomolecular resource facilities, and to communicate the biotechnology research conducted by the Association’s Research Groups and members, as well as other investigators.