Far Field Pattern Calculation

ynathan

Hi,

I wonder if I can change the distance at which the far field patterns are calculated? In default mode which distance FEKO uses? Is it 2*D^2/lamda or something else?

 

Thanks in advance

Mel

Hi Ynathan

 

The farfield does not have a specific absolute distance at which it is calculated. The 1/r distance dependency is removed in the field calculation to obtain the far field.

The distance at which the 1/r dependency is zero (or negligible) will of course depend on the model.

 

To calculate the fields at a specific distance, just request a near field at a large distance from the model. This would then essentially also be a 'far field', but then at a specific distance 

If the r component of the near field is very very small, then that specific distance could be seen as being 'in the far field' of the model.