A low-profile wide-scan phased array for 28 GHz 5G band operation, based on the current sheet array (CSA) concept, is presented in this work. The array is dual-polarized with horizontally and vertically polarized dipoles are placed in close proximity to leverage intentional capacitive coupling. A meta-surface based on fully split rings is printed on the top of the matching layer, contributing to wide-scan performance. A capacitive metallic plate is placed below the cross-section formed between orthogonal dipole elements to subdue the inband coupled-loop modes. The design is demonstrated to operate at 26-30 GHz with voltage standing wave ratio (VSWR) <3 for ±60 scanning in principal planes, with a low-profile 0.26λ h . The simulations are validated by measuring an 8 Â 8 array prototype, which shows good agreement with the simulated predictions.

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