A three‐antenna MIMO system capable of generating a wide operating bandwidth of 2400–5850 MHz for access‐point applications is introduced. The proposed design is based on a bent metal‐plate monopole antenna with a compact size of 20 × 20 × 14 mm 3 . The three antennas are equally spaced along the perimeter of a circular ground and all generate a wide bandwidth of larger than 4 GHz. With the antenna short‐circuiting facing the center of the ground, not only the overall antenna size is reduced but also good isolation of less than −20 dB can easily be obtained. Calculated envelope correlation is also less than 0.002 across the operating band. The design prototype of the antenna is discussed in detail in the article.
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Chou et al. (2008) studied this question.
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