Abstract

This paper presents a planar multiple-input multiple-output (MIMO) antenna for Ultra-wideband wireless applications. The antenna system consists of a radiating patch with stair steps, microstrip feed line and T- and L-like shape slots at the ground plane with low profile structure (54×30×0.8mm3). The proposed antenna can cover the wide frequency range from 3.04 GHz to 11.2 GHz. It shows nearly omnidirectional radiation pattern and high gain. To improve the isolation, a stub and two L-like shape slots are introduced into the ground plane and hence, the achieved isolation is higher than 15 dB over the entire frequency band.

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