JefimenkoModels.jl is a time-domain solver for the electromagnetic near-fields produced by
an arbitrary distribution of charges and currents, both electric and magnetic. This solver
implements a generalized version of the Jefimenko equations that enables the consideration of
magnetic charges and currents, which are often a useful analytical tool in electromagnetics
modeling. The solution process operates purely in the time-domain, enabling the study of
wideband sources without artifacts caused by frequency-domain analysis and with reduced
memory usage compared to FDTD methods.
This package leverages the
UnitfulCoordinateSystems.jl
package to provide a handy and performant way to deal with Unitful coordinate data.
This package remains in development status. Multiple dispatch is used to select the solver method appropriate for a particular source type. The implementation status of these methods is detailed in the following table.
| Solver Method | Implemented | Tested |
|---|---|---|
LineSource_Straight |
✅ | ✅ |
SurfaceSource_Disk |
✅ | ✅ |
SurfaceSource_Rectangle |
✅ | ✅ |
VolumeSource_Rectangular |
✅ | ✅ |
VolumeSource_Cylinder |
❌ | ❌ |
VolumeSource_Sphere |
❌ | ❌ |
The LineSource_Straight solver methods have been validated against a major commercial
software package's Method of Moments (MoM) solver for electric current line sources. For a
single-frequency (CW) source signal, JefimenkoModels produced identical results as the
competitor MoM solver. However, when the source signal was defined as a wideband transient
pulse, the JefimenkoModels solver was substantially faster and more accurate: the MoM
solver uses a discrete-frequency-domain transfer function that introduces artifacts/error
when solving for wideband signals.