EM scattering by various scatterers.
Model and Comments  Animation by FDTD  

PEC Cylinder  radius: 1.5 wl. source: magnetic line current; distance between center of the cylinder and source: 6.25 wl.


Dielectric Cylinder  radius: 1.5 wl., relative permittivity: 3.0 source: magnetic line current; distance between center of the cylinder and source: 6.25 wl. 

Parabolic Reflector  aperture radius: 3 wl. 

Dielectric Lens  si=infinity lensmaker's formula: c.f.) E. Hecht, Optics, Eqs.(5.16)(5.17), p.242 

si=infinity lensmaker's formula: c.f.) E. Hecht, Optics, Eqs.(5.16)(5.17), p.242 

si=6 wl. lensmaker's formula: c.f.) E. Hecht, Optics, Eqs.(5.16)(5.17), p.242 