Analysis and design of MIMO antenna for UWB applications based on the super-formula

In this paper, a MIMO antenna of size 52 × 35 × 1.6 mm 3 for UWB applications is designed and analyzed. A separate ground plane antenna elements are set beside each other on top of FR-4 substrate. Each single antenna element is designed through varying the main six parameters that describe the super-formula. The antenna elements are fed through a microstrip feeding line. A full-wave simulator is used to simulate the antenna then it is fabricated and tested. Experimental and simulation results are in good agreement and each antenna element works in the band (3.1 GHz–12 GHz) which is in the UWB frequency range with VSWR less than 2. Also, the isolation between the two elements is less than −15 dB. In addition, they have a good advantage of having almost constant group delay and gain.