Altair Feko: How to Calculate the Time Response for a Given Input Signal in POSTFEKO


This article describes how to calculate the time response for a given input signal in POSTFEKO.

 

Example

Consider a dipole antenna with a near field sampled from 1 to 30 metres away from the centre of the dipole on its electric symmetry plane.

Dipole antenna.

 

The excitation pulse is taken as:

 

The frequency range should match with the signal bandwidth, see Altair Feko: What are the guidelines for defining a time signal in POSTFEKO? for more details.

 

Option 1 - Using Time Analysis

The Create time signal dialog in POSTFEKO.

 

The time response of the near field for the given input time signal on the x-axis at 10 m.

 

 

Option 2 - Using Math Traces

The defined ramp time signal, t.

 

 

The input time signal, u.

 

where the bandwidth was calculated as 200 MHz.

 

 

The time response of the near field for the given input time signal on the x-axis at 10 m.

 

 
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