This is the second of the series for the waveguiding structures using the periodic band gap materials (The first one is at: Periodic Band Gap (PGB) Waveguide and Propagation – FDTD Simulation).
Here, two simultaneous simulations are shown. In the right one, both excitations are in-phase (cosine-cosine) whereas in the left, the excitations are out of phase by 90 degrees (sine-cosine).
Originally, this was inspired by the following video:
Guiding EM waves via periodic structure. The frequency of operation is 11.085 GHz. The relative dielectric permittivity of the square blocks are 11.56 and the ambient medium is air. Each block is 3.5 mm x 3.5 mm.
The main reference is the below dissertation:
Marcelo Bruno Dias, “Estudo da Propagação de Ondas Eletromagnéticas em Estruturas Periódicas“. Graduation Dissertation – Electrical Engineering Course, Universidade Federal do Pará (UFPA), Belém, Pará Brazil, 2003.
More details can be found in their lab web site:
Also see below:
Half Wavelength Dipole Antenna Radiation
Oblique Plane Wave Reflection From Half Space
Radiation from a Circularly Tapered Dielectric Waveguide
Right Hand Circular Polarization (RHCP) Animation
Linear Polarization Animation
Left Hand Elliptical Polarization (LHEP) Animation
Standing Wave Pattern (SWR) Animation
Electromagnetic Propagation of UWB Short Pulse in Random Medium