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In this article, a circular patch microstrip feed line monopole radiator with a dimension of 15 × 20 × 1.6 mm3 is proposed. An inverted L‐shaped stub is employed in the partial ground plane to achieve optimum bandwidth, radiation pattern and radiation efficiency. To further cover the sub‐6 GHz spectrum (3.4–3.8 GHz) for future 5G communications, a two‐element MIMO antenna configuration is designed...