Improved Time Efficiency for Simulation of an Antenna for Near-Field Distance Measurements in CST Studio Suite

The study of an antenna for near-field distance measurements in CST Studio Suite is presented. The properties of the antenna were simulated in the frequency band from 8 to 12.4 GHz for distances of a reflective target from 0 up to 20 mm. The techniques enable to reduce the calculation time in Time Domain (TD) solver were discussed. The speed-up of the simulations more than 25 times was achieved. Cross domain verification between TD and FD (Frequency Domain) solvers was shown. The simulated and measured results were compared. They are in a good agreement, which confirm that the experiment was very well predicted by the simulations.