A new study to suppress mutual-coupling between waveguide slot array antennas based on metasurface bulkhead for MIMO systems

Alibakhshikenari, Mohammad, Virdee, Bal Singh, Khalily, Mohsen, See, Chan, Abd-Alhameed, Raed, Falcone, Francisco and Limiti, Ernesto (2018) A new study to suppress mutual-coupling between waveguide slot array antennas based on metasurface bulkhead for MIMO systems. In: Asia-Pacific Microwave Conference, 6-9 November 2018, Kyoto, Japan.

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Abstract / Description

In this paper, a new method is proposed to reduce mutual coupling between waveguide slot array (WSA) antennas based on metasurface technology. This is achieved by placing a metasurface bulkhead between the two WSA antennas. Performance of the dual-waveguide antenna structure is shown to substantially enhance when compared against an identical reference WSA antenna with no metasurface. WSA antennas used in the study has dimensions 40×20×5mm3 and operates over 1.7-3.66 GHz, which corresponds to a fractional bandwidth of 73.13%. The average isolation of the reference WSA antennas is -20 dB; however, with a metasurface bulkhead the isolation is shown to increase to -36.5 dB. In addition, the bandwidth extends by ~10%, and the gain improves by 14.66%. The proposed method is should find application in MIMO systems where high isolation between neighbouring radiation elements is required to improve the antenna characteristics, and mimimise array phase errors, which is necessary to enhance the system performance.

Item Type:	Conference or Workshop Item (Paper)
Uncontrolled Keywords:	suppression mutual coupling; metamaterial bulkhead; waveguide slot array antennas; multiple-input multiple-output (MIMO) systems; array structures
Subjects:	600 Technology > 620 Engineering & allied operations
Department:	School of Computing and Digital Media
Depositing User:	Bal Virdee
Date Deposited:	31 Oct 2018 09:11
Last Modified:	23 Nov 2020 09:54
URI:	https://repository.londonmet.ac.uk/id/eprint/3665

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