MIMO antenna with omnidirectional pattern diversity

A planar printed multi-input–multiple-output (MIMO) antenna with pattern diversity is proposed. The two printed dipole-like radiators have omnidirectional radiation patterns in the orthogonal planes. The antennas are printed on the opposite sides of a dielectric substrate, which makes it a compact MIMO system with excellent isolation between the antenna elements. With an external loaded capacitor, the MIMO antenna shows a wide frequency tunable range.

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