| Title |
Optimal Design of a UWB-MIMO Antenna with a Wide Band Isolation using ES Algorithm |
| Authors |
한준희(Han, Jun-Hee) ; 김형석(Kim, Hyeong-Seok) |
| DOI |
https://doi.org/10.5370/KIEE.2014.63.12.1661 |
| Keywords |
UWB(Ultra Wide Band) antenna ; MIMO(Multiple Input Multiple Output) ; ES(Evolution Strategy) algorithm ; T-shaped stub ; Wide band isolation |
| Abstract |
In this paper, a compact planar ultra wideband (UWB, 3.1~10.6GHz) multiple-input multiple-output (MIMO) antenna is proposed. This antenna consists of two monopole planar UWB antennas and T-shaped stub decoupling between two antennas. The T-shaped stub improve the isolation characteristic at the wide band. The evolution strategy(ES) algorithm is employed to optimized design. As a result, optimized antenna has a return loss less than -10dB and the isolation less than -15dB from 3.1GHz to 10.6GHz. During the optimization process, the antenna gain is enhanced at lower band and the envelope correlation coefficient(ECC) is lower than 0.003. |