WGabrielRF
Newbie level 4
I have a problem with a corrugated horn antenna (dual polarization). During the design (I am using CST Studio Software) I obtained the following results:
S11 and S22 < -12dB
S21 and S12 < -30 dB
XPD better than 35dB
After manufacturing the Horn antenna, the S- Parameters are according to simulation but the radiation pattern (and XPD) are not according to the design. I will try to explain better.
The simulation report a radiation pattern of 90-100º @10dB. The measured one report 45º @ 10dB. The XPD measured is different for each port of the horn (I do not understand why because the design of the horn is the same).
Simulated co-polar radiation pattern:
Simulated Crosspolar radiation pattern:
H-Cut Horn antenna measures:
I would like to know if there is any parameter or a properties for the simulation in order to take into account the corrugation of the antenna because the simulation seems the same with and without the corrugations. I do not know exactly what could be the problem.
I think I am not making the farfield simulation properly. I have tried to change boundary and the distance for the simulation but the results are always the same.
S11 and S22 < -12dB
S21 and S12 < -30 dB
XPD better than 35dB
After manufacturing the Horn antenna, the S- Parameters are according to simulation but the radiation pattern (and XPD) are not according to the design. I will try to explain better.
The simulation report a radiation pattern of 90-100º @10dB. The measured one report 45º @ 10dB. The XPD measured is different for each port of the horn (I do not understand why because the design of the horn is the same).
Simulated co-polar radiation pattern:
Simulated Crosspolar radiation pattern:
H-Cut Horn antenna measures:
I would like to know if there is any parameter or a properties for the simulation in order to take into account the corrugation of the antenna because the simulation seems the same with and without the corrugations. I do not know exactly what could be the problem.
I think I am not making the farfield simulation properly. I have tried to change boundary and the distance for the simulation but the results are always the same.