CST Studio Suite Student Edition 2017 is a free electromagnetic simulation tool.

Contains versatile high-frequency time domain and frequency domain solvers, and static and thermal solvers. Is supported by online examples showing how classic textbook problems can be solved with simulation. Can be incorporated into coursework for a class, and online examples used by individual students for independent extracurricular learning at undergraduate and postgraduate levels.

Computer Simulation Technology (CST)

www.cst.com