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 40x20x5mm3 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.
Alibakhshikenari, M., Virdee, B., Khalily, M., See, C., Abd-Alhameed, R., Falcone, F., et al. (2018). A New Study to Suppress Mutual-Coupling between Waveguide Slot Array Antennas based on Metasurface Bulkhead for MIMO Systems. In Proceedings of the 2018 Asia Pacific Microwave Conference (pp.500-502). 345 E 47TH ST, NEW YORK, NY 10017 USA : IEEE [10.23919/APMC.2018.8617287].
A New Study to Suppress Mutual-Coupling between Waveguide Slot Array Antennas based on Metasurface Bulkhead for MIMO Systems
Limiti, E
2018-11-01
Abstract
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 40x20x5mm3 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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
