A compact octagonal shaped fractal UWB MIMO antenna with 5.5 GHz band-notch characteristics

In this paper, a compact octagonal shaped fractal ultrawideband (UWB) multiple-input-multiple-output (MEMO) antenna is presented. The application of Minkowski fractal geometry in antenna design provides desired miniaturization and wideband phenomena. To achieve the good isolation both the antenna are placed orthogonal to each other and an L-shape ground stub is enhanced from the ground plane. The C-shape slot is used for WLAN band notch. The proposed antenna has compact size of 40 mm × 25 mm.