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

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

doi:10.51173/jt.v5i1.901

Authors

Haider Saad Electrical Engineering Technical College, Middle Technical University, Baghdad, Iraq.
Mahmood F. Mosleh Electrical Engineering Technical College, Middle Technical University, Baghdad, Iraq.
Raed Abd-Alhameed Faculty of Engineering and informatics, Bradford University, Bradford, UK

DOI:

https://doi.org/10.51173/jt.v5i1.901

Keywords:

Sub-6 GHz, 5G, LP, CP, CPW

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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Author Biographies

Mahmood F. Mosleh, Electrical Engineering Technical College, Middle Technical University, Baghdad, Iraq.

Computer Technical Engineering

https://orcid.org/0000-0002-0350-0057

Raed Abd-Alhameed, Faculty of Engineering and informatics, Bradford University, Bradford, UK

Professor of Radio Frequency Engineering

https://orcid.org/0000-0003-2972-9965

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