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The work presents the design of a novel semi‐circular arc‐shaped two‐element multiple‐input‐multiple‐output (MIMO) antenna with improved isolation. The antenna is obtained by cutting and subtracting a circular disk from another circular disk, forming the shape of a semi‐circular arc. The antenna is replicated to form a two element MIMO antenna system on a FR4 substrate of size 36 × 26 mm2 with edge‐to‐edge...