Most of the time currently for electromagnetic simulations and analysis we are using FEKO and CST commercial software for solutions of our research and educational problems :

CST Studio Suite^(R) is a high-performance 3D EM analysis software package for designing, analyzing, and optimizing electromagnetic (EM) components and systems. We have commercial licenses of all electromagnetic field solvers for applications across the EM spectrum.

Our common subjects of EM analysis include the performance-based design of antennas, transmission lines and filters, the modeling of complex objects' radar cross-sections (RCS) and polarization scattering matrices, the modeling of realistic communication channels, and, also, the thermal analysis in high-power devices.

Numerical simulations form the first step of the design process of the electromagnetic components. The simulation results and final implementation of suitable designs can be validated in the DUCAT anechoic chamber and Microwave laboratory.

There are some examples of our realized designs:

Fig. 1. SIW based active cosecant phased antenna array for future 5G systems

Fig. 2. Dual-Band wide-angle scanning planar phased array in X/Ku-Bands

Fig. 3. L/S-Band frequency reconfigurable phased array antenna

With these software packages, it is possible not only to make the electromagnetic field simulations for the antenna systems and array design but to solve much more computationally complex problems like the electromagnetic wave propagation in real communication channels and the signals scattering on complex objects. There is also a possibility to combine the electromagnetic and thermal analysis that is very important for the design of modern 5G antenna array with incorporated transmitting distributed modules. A few illustrative examples of such communication channel modeling and thermal design analysis are presented below.

Fig. 4. Channel modelling of single- and multi-lobe antenna arrays in 5G urban outdoor environments using FEKO

Fig. 5. Thermal analysis of the passively-cooled active integrated antenna arrays in CST

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