Applications of TLM to EMC Problems

Application of a simulation method must be based on a recognition of the basic features of the problem under consideration. Whilst in microwave problems the requirements are for high-accuracy and low reflections from open boundaries, in EMC problems these considerations are rarely paramount. Due to the uncertainties in system configuration, material properties and component characteristics larger errors are acceptable in EMC applications. It is not uncommon for errors in the band ± 6 dB to be acceptable for general predictive simulations and design. Similarly, reflections from numerical boundaries in open problems are rarely a serious problem in EMC simulations. The relaxation of error requirements offers scope for engineering approximations and model simplifications. However, EMC brings its own problems to the modeller. These may be conveniently classified under the following categories [1, 2]

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