Antenna Measurement: Horns, Frequency, & Gain Modeling

[lisawoods]

I have 2 horn antennas facing each other each has a size A & B respectively they operate at a frequency 800MHz to 2.5 GHz. they are a distance D apart. when making gain measurments there is a ringing effect which changes as the horns are moved futher or closer apart. Does anyone know if this effect can be modeled as a Fourier series

 

[berkeman]

A Fourier series of what? Sounds like multipath...

 

[lisawoods]

antenna

the Fourier series would model the effect of the reflections between to the horns.