2D DB-FDTD formulation using flux density for study of plane wave propagation in TM mode

Electromagnetical Engineering

In order to implement simultaneously in the same two-dimensional FDTD simulation an ABC (Absorbing Boundary Condition) formed by loss layers as well as a dielectric medium within the FDTD gate, the DB-FDTD formulation for the case 2D is studied in this paper. The DB-FDTD formulation uses the electric and magnetic flux densities in Maxwell's equations. The DB-FDTD formulation allows to separate the update equations in the program into two categories. One equation group will be used for the implementation of loss layers, and another group for the definition of simulation space using the space-dependent electromagnetic parameters. Simulations for the 2D case are implemented with sources introduced by TFSF (Total Field Scattered Field) limit, thus introducing a plane wave into the simulation space. The simulation of the plane wave propagation is made for vacuum and for a medium where a dielectric cylinder is present in the vacuum.

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