Finite-difference time-domain (FDTD) Software Information

FDTDFinite-difference time-domain (FDTD) software is a numerical method that models electrodynamic systems by finding approximate solutions to a set of differential equations associated to the system.

Time-domain electromagnetic simulation uses Maxwell's equations and advances them over time within a specified region of the electromagnetic field.

Features 

An advantage of a time-domain analysis over a frequency-domain analysis is that it gives a broadband output from a single implementation of the software and the output is scalable with little performance difficulties.

Specifications

The software divides time and space into discrete components:

  • the space component is split into cubes
  • the electric fields are located on the edges
  • the magnetic fields are located on the faces

This orientation is known as a Yee cell. Time is constrained to small steps that allow the program to calculate the electric and magnetic fields accordingly, allowing for accurate simulation. 

Resources

Remcom—FDTF Method

Related Information

IEEE Spectrum—Semcad X Jungfrau Marks the Spot (the Hot Spot)

IEEE Spectrum—Calculating Fields

Image credit:

Remcom



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