Tri-polarized Patch Antenna with X-Shaped Element for Wireless LAN MIMO System

In this paper, a tri-polarized antenna is with X-shaped element for multiple-input multiple-output (MIMO) wireless communication system had been design in CST Microwave Studio and fabricated in the laboratory. This antenna had three different stage of Antenna Design A, Antenna Design B and Antenna Design C. The first stage consists of Antenna Design A1, Design A2 and Design A3 that created to produce single polarization at frequency 2.4 GHz. Then, the Antenna Design B is then made up by joining Antenna Design A1 and Antenna Design A2 in a same antenna structure. The last stage is Antenna Design C that consist three different design - Antenna Design C1, Design C2 and Design C3. These antennas consist three different ports - Port 1, Port 2 and Port 3 that effect tri- polarized antenna. At the Port 3 of Antenna Design C3, the return loss performance of simulation and measurement of the antenna are 2.412 GHz and 2.48 GHz with -23.205 dB and -10.101 dB, respectively.