Optimization of antenna system for MIMO technology

Abstract

This paper deals with the optimization of antenna system for MIMO technology, assembled of two rectangular microstrip patch antennas. The rectangular patch is by far the most widely used configuration. First, there is described the initial shape of the antenna, further optimization of the rectangular patch and finally is described optimization of the two antennas of this type. We are interested radiation pattern and gain of the antenna system and the leakage of signals from one antenna to another antenna. Optimization was performed using the software COMSOL Multiphysics. Its Optimization module has implemented the following optimization methods: Bound Optimization (BOBYQA), Nelder-Mead, Coordinate search, and Monte Carlo.