A Compact Miniaturized UWB-MIMO Antenna With WLAN Band-Notched Function

This paper presents a compact miniaturized ultra-wideband(UWB) antenna with band-notched Function, which is experimentally researched for multiple-input-multiple-output (MIMO). Two selfsame monopoles are arranged symmetrically, which constitute the UWB-MIMO antenna. The monopole of the antenna is modified from a micro-strip off-center-fed patch. The modified ground plane which is excavated three open rectangular slots and the antenna monopole become the antenna radiator which achieves the desired ultra-wideband. The center part of the ground plane can achieve high isolation phenomena by propagating through the restraining surface current. Moreover, the counter monopoles enhance isolation and enable more compact antenna which has dimensions of $28\times 31\text{mm}^{2}$ . Two G-shaped slots are etched on the monopoles, which achieves the band-notched function in WLAN (5.15-5.85GHz) band. Both simulated and measured return loss $(\mathrm{S}11 of the antenna have better isolation than −15 dB from 3-12GHz. The performance of the antenna is investigated on isolation of the two ports, envelope correlation Coefficient (ECC), realized gain, radiation pattern.