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Basic Principles of Physical Optics

4 bytes added, 15:53, 27 July 2018
/* General Huygens Sources */
where the summation over index ''j'' is carried out for all the elementary cells &Delta;<sub>j</sub> that make up the Huygens box. In [[EM.Cube]] Huygens surfaces are cubic and are discretized using a rectangular mesh. Therefore, &Delta;<sub>j</sub> represents any rectangular cell located on one of the six faces of Huygens box. Note that the calculated near-zone electric and magnetic fields act as incident fields for the scatterers in your [[EM.Illumina]] project. The Huygens source data are normally generated in one of [[EM.Cube]]'s full-wave computational modules like [[EM.Tempo]] (FDTD), [[EM.Picasso]] (Planar MOM) or [[EM.Libers Libera]] (3D MOM). Keep in mind that the fields scattered (or reradiated) by your physical structure do not affect the fields inside the Huygens source.
The far fields of the Huygens surface currents are calculated from the following relations:
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