New Multi-band MIMO Antennas Based on SIW Technology : Design and Performance Analysis

In telecommunication systems, the antenna is an important element for transmitting information between transmitter system and receiver system. To improve the performance of antennas in terms of coverage area, they are usually grouped into arrays. Generally, if the spacing between arrays elements is less than half a wavelength, a mutual coupling usually occurs, which reduces the adaptability of the system. It is therefore very difficult to install these elements in mobile units of limited size. In this paper, we propose new design of multi-band MIMO antenna based on Substrate Integrated Waveguide (SIW) technology. The model system is tested by simulation in HFSS environment with the conducting copper is produced on substrate of FR4-Epoxy, a dielectric of 4.4 at frequency 2 - 5 GHz. This paper is devoted to the presentation and analysis of the proposed antenna using SIW technology, and study theirs characteristics exactly in the frequency band [2 − 5GHz]. The simulations are performed using the HFSS simulation software.