28 GHz Patch Antenna Array with Reduced Mutual Coupling for 5G Communications Systems

Authors

DOI:

https://doi.org/10.52339/tjet.v41i2.775

Keywords:

Patch Antenna Array, Mutual Coupling, Scanning Angle, 5G, Directional Coupler, Gap Coupled Insert Feed

Abstract

A 28 GHz patch antenna array with reduced mutual coupling for 5G communication systems is presented in this paper. Two elements antenna array was simulated with a periodic boundary to represent an infinity array. The antenna array is attached with a pair of the coupled directional coupler with a coupling value of -3.47 dB, and transmission lengths of 3.40 mm and 7.62 mm depending on the antenna array's magnitude and phase coefficient were designed and simulated. A reduced mutual coupling of -31.86 dB compared to -10.75 dB for an array without a decoupling network was observed. The wide scanning angle of ±180o was also achieved. These results were obtained under smaller antenna elements interspacing of 0.43 0. Moreover, the proposed antenna array design achieved a 3.32 GHz enhanced fractional bandwidth which is 11.8%. Generally, this work found that the combinatorial advantages of using the gap coupled insert feed technique and employing a pair of directional couplers develop the patch antenna array design with better performance.

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Author Biographies

Rahabu F. Mwang’amba, University of Dar es Salaam

Department of Electronics and Telecommunications Engineering, College of Information and Communication Technologies 

Hashimu U. Iddi, University of Dar es Salaam

Department of Electronics and Telecommunications Engineering, College of Information and Communication Technologies

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Published

2022-08-05

How to Cite

Mwang’amba, R., & Iddi, H. (2022). 28 GHz Patch Antenna Array with Reduced Mutual Coupling for 5G Communications Systems . Tanzania Journal of Engineering and Technology, 41(2), 1-15. https://doi.org/10.52339/tjet.v41i2.775
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