Devices placed in orbit must be able to survive without any maintenance. Designers and engineers are now able to use CST’s range of EM simulation software to model the arduous electromagnetic environment of space. Simulations make it possible to model the behavior of antennas and filters while in isolation and when installed on a spacecraft, as well as to calculate the external electromagnetic field effects during the design process. With charged particle simulation, CST software can also be used to design devices such as traveling wave tubes.