Two-Stage TLM Modelling Approach for more Efficient Analysis of Vehicle Antenna Installations

Modelling the installed performance of vehicle-mounted antennas remains a significant computational challenge. A two-stage approach, based on the use of an equivalent surface source, avoids the need to include the antenna geometry in the installation model. This approximation can very significantly reduce memory requirements and computing time. Numerical experiments suggest that this can provide a more efficient approach for installations based on simple structures, but that greater caution may be required for applications involving more complex geometries, such as passenger cars.