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High Isolation Metasurface Inspired MIMO Antenna for UWB Applications: (Design and Analysis)

This research introduced a light weight, small size Multiple-Input-Multiple-Output (MIMO) high isolation antenna for Ultra-wideband (UWB) applications. MIMO antenna design is accomplished by integrating two identical radiators in parallel configuration. To improve impedance matching, two ground slots are formed in the ground. A multistep microstrip feed is taken into consideration which is offered better impedance matching. Novel meta-surface isolation technique is employed in the proposed antenna. First, a diamond-shaped unit cell absorber is designed and analyzed and further, using this unit cell meta-surface structure is created in the ground and placed between the antenna radiators. This Meta-surface is offered good isolation up to 20 dB. The antenna has wide operating bandwidth i.e. 6 GHz to 16.5 GHz, which is correspond to UWB. Proposed antenna is compared with previous reported literature and size optimization with improved isolation is attained with novel meta-material absorber.