Time-domain EM numerical modelling: A pulse shape causality and temporal support analysis

A number of model-pulses to be used for feeding purposes in time-domain, electromagnetic simulations are compared. The pulses' causality and temporal support are employed as discriminating features. CST Microwave Studio
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simulations of a canonical configuration are employed for assessing the pulses' suitability. In view of their entailing numerical accuracy and short temporal signatures, the time-differentiated windowed-power (∂
t
tWP) and the time-differentiated power-exponential (∂
t
PE) are shown to represent opportune alternatives to the standard CST Microwave Studio
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(Gaussian) pulse for performing simulations.