High isolation multiband MIMO antenna system

A high isolation multiband MIMO antenna system, comprising:

• a substantially rectangular planar dielectric substrate having a top face and a bottom face;
• a plurality of electrically conductive microstrip antennas disposed on the substantially planar substrate;
• at least one ground plane having a substantially L-shaped contour, the at least one ground plane having a substantially rectangular portion and an elongate extension portion, the elongate extension portion extending from the substantially rectangular portion, the substantially rectangular portion and the elongate extension portion being disposed on the substantially planar substrate;
• feeding points, for feeding signals, the feeding points being electrically connected to the antennas, wherein said plurality of electrically conductive microstrip antennas comprise at least one F-shaped antenna having an elongate portion having opposed first and second ends, the first end thereof being connected to a corresponding feeding point, and first and second orthogonal portions, said first and second orthogonal portions extending orthogonally to an axis of said elongate portion, said first orthogonal portion extending from the second end of said elongate portion, said second orthogonal portion extending from a central region of said elongate portion, said first orthogonal portion having a length associated therewith which is greater than a length associated with said second orthogonal portion.