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Alibakhshikenari, Mohammad, Limiti, Ernesto, Virdee, Bal Singh and Shafai, Lotfollah (2018) A technique to suppress mutual coupling in densely packed antenna arrays using metamaterial supersubstrate. In: EuCAP 2018, 9-13 April 2018, London.
A simple and practical technique for reducing the mutual coupling between neighbouring antennas is presented for application in densely packed antenna arrays. This is achieved by locating between the radiation elements a smaller patch with metamaterial decoupling structure (MTM-DS). In this case the radiating elements are circular patches and the MTM-DS is constructed from a hexagonal slit resonator. The consequence of implementing the MTM-DS patch is significant reduction in mutual coupling between adjacent radiating patches by 60%, improvement in impedance match by 200% and substantial increase in the antenna’s fractional bandwidth by 369%. Since the ground plane is unaltered the front-to-back ratio is unaffected too. The proposed technique is easily realizable and can be used effectively in beam scanning applications.
Available under License Creative Commons Attribution Non-commercial No Derivatives.
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