Research and development engineers working in aerospace and defense continually strive to extend the boundaries of what is technically possible and this extends to the specialized field of electromagnetic simulation technology. One branch in this community deals with the optimization of radar cross sections (RCS), while another concentrates on the influence of the surroundings (an airplane body on the performance of communication or radar antennas, for example). What both of these application areas have in common is the size of the electrical problem, which can typically run to many hundreds of wavelengths, and that the relevant structures are mainly surfaces and free space.
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