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Time Domain Analysis

Time Domain Analysis

FEKO is based on a frequency domain formulation. Time-domain information can however be obtained by applying Fourier Transforms on broadband frequency-domain data.

Lightning_web_smaller.jpg

 

The specification of time-domain pulse shapes and the required frequency domain simulations is facilitated by an interface in POSTFEKO which helps users select the appropriate pulse shape.

Predefined Pulse Forms in POSTFEKO

Time Domain

POSTFEKO Pulse Specification - Time Domain
Double Exponential 1
(Charge / Discharge)
Double Exponential 2
(Lightning)
Gaussian
(Normal distribution)
POSTFEKO_double_exponential_pulse_1_TD.JPG POSTFEKO_double_exponential_pulse_2_TD.JPG POSTFEKO_Gaussian_pulse_TD.JPG
Ramp Triangular
POSTFEKO_Ramp_pulse_TD.JPG POSTFEKO_Triangular_pulse_TD.JPG

Frequency Domain

POSTFEKO Pulse Specification - Frequency Domain
Double Exponential 1
(Charge / Discharge)
Double Exponential 2
(Lightning)
Gaussian
(Normal distribution)
POSTFEKO_double_exponential_pulse_1_FD.JPG POSTFEKO_double_exponential_pulse_2_FD.JPG POSTFEKO_Gaussian_pulse_FD.JPG
Ramp Triangular
POSTFEKO_Ramp_pulse_FD.JPG POSTFEKO_Triangular_pulse_FD.JPG
 
POSTFEKO Pulse Propagation and Reflection Video Clip

Video Demonstration

The following video clip demonstrates a plane wave incident upon a sphere and plate in free space.  Scattering from the sphere and plate is clearly visible.

Additional Information

Additional Information