Today’s aircrafts and unmanned aerial vehicles carry a wide variety of communication equipment and onboard antennas which may be engaged simultaneously. Thus, individual antennas and the mutual coupling of antennas in the channels with neighbouring operating frequencies must be carefully analyzed. Below we demonstrate capabilities of the Wave3D computational suite for electromagnetic analysis of antenna radom properties onboard A330 commercial jet and dipole antenna radiating onboard of F16 fighter jet.

Fig. 1: Full-scale composite metal-dielectric model of A330 commercial jet featuring 572,136 triangle elements discretizing the surface and 75,840 tetrahedrons discretizing the dielectric radom.

Wave3D allows for the full-wave electromagnetic analysis of scattering and radiation problems in such electrically large models with over 1 million dense matrix unknowns on a PC with only 32Gb of memory.

Fig. 2: Surface current distribution on the metal surface of the aircraft and volumetric distribution of electric field in the volume of the dielectric volume calculated at 400 MHz on a full-scale model of commercial A330 jet.

Another example demonstrateing broadband large-scale analysis capabilities of the Wave3D tool is the dipole antenna radiation in the frequency range from 10 MHz to 250 MHz onboard F16 fighter jet shown below.

Fig. 3: CAD model (left) and current distribution (right) for F16 fighter jet under excitation by dipole antenna.

Fig. 4: Near field slices at 10 MHz (left), 125 MHz (center), and 250 MHz (right) calculated using broadband MLFMA accelerated Moment Method of Wave3D.