Magnetostatic

Magnetostatic time steps are realized by specifying a series of time and associated permittivity increase factors. The factors are all referenced with respect to the initial permittivity values assigned to each individual material (cable background and dielectric jackets). The time step increase factor is equal to the square root of the associated permittivity increase factor. For example, if the following magnetostatic information was provided:

The time ‘t0’ is the time to begin initiating permittivity increases. The first increase factor, ‘t0’ must therefore be ‘1.0’. In some situations, it is important to begin the permittivity increases after the high frequency behavior has dissipated. For some pulse excitations, this may occur after the fast rising part of the pulse has been achieved.

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