In this paper, we propose a planar dual-band MIMO antenna with improved isolation for WLAN applications (2.45 GHz and 5~6 GHz). The MIMO antenna consists of two antenna elements that are perpendicularly placed in order to achieve the polarization diversity for the high band, such that the coupling between the antenna elements can be reduced. On the other hand, additional slot cut on the common ground plane is introduced to further enhance the isolation for the low band. Simulated and experimental results show that the proposed techniques can effectively inhibit the coupling.
