This application note describes simulation of a radiation pattern of a GPS antenna mounted on a combat vehicle resting on an infinite real ground. The motivation behind the work presented in the application note is to illustrate a reduction in a number of unknowns when a WIPL-D Pro feature Unused Entities is used.
The reduction has been achieved by realizing that only objects positioned close to the antenna have significant influence to a radiation pattern. Accordingly, in many simulation scenarios, it is not necessary to simulate the entire structure surrounding the antenna.
The antenna which radiation pattern will be calculated, is covered with radome and located on the roof of the vehicle. Infinite real ground is placed below the vehicle. All models are simulated at 1500 MHz. The simulations are carried out on powerful desktop computer, with 2 12-core CPUs, sufficient RAM and 4 low-end Nvidia GeForce GTX 1080 Ti GPU cards. All simulation times are in minutes.