EM.Cube's FDTD Modules currently offers the following types of observable:
# * Field Probes# * Field Sensors# * Domain Energy# * Far Field - Radiation Patterns# * Far Field - RCS# * Huygens Surface Data# * Port Characteristics (S/Y/Z Parameters and VSWR)# * Reflection and Transmission Coefficients
Field probes monitor the field components at a certain point in the computational domain. They record the time-domain field data during the entire time loop and compute their frequency spectrum using a discrete Fourier transform. Field sensors are primarily intended for observation of near field maps on a certain cross section of the computational domain. The field sensor planes are parallel to one of the three principal XY, YZ or ZX planes. When you run a frequency sweep or parametric sweep, multiple maps are generated for each sample of your sweep variable, and you can animate these maps. You can also animate the evolution of the near fields in the time domain over the course of the simulated time loop. EM.Cube can also keep track of the electric, magnetic and total energy of the computational domain as functions of the time step.