FMeyer
Electrical
- Aug 19, 2015
- 4
Hi all,
I would like to understand in more detail the physical reason, why an offset in a reflector antenna leads to an increased cross-pol component. I look at linear polarized antennas. For sure the asymmetric illumination of the reflector is the cause for the cross-pol component. My question is whether the asymmetry in amplitude or in phase is the main reason for the cross-pol component? (I'm not even sure whether it this distinction is possible.)
The background for my question is, that if I have a high control over the feed pattern, shall I mainly try to keep the amplitude or the phase constant over the reflector in order to reduce the cross-pol component.
Thanks a lot in advance
I would like to understand in more detail the physical reason, why an offset in a reflector antenna leads to an increased cross-pol component. I look at linear polarized antennas. For sure the asymmetric illumination of the reflector is the cause for the cross-pol component. My question is whether the asymmetry in amplitude or in phase is the main reason for the cross-pol component? (I'm not even sure whether it this distinction is possible.)
The background for my question is, that if I have a high control over the feed pattern, shall I mainly try to keep the amplitude or the phase constant over the reflector in order to reduce the cross-pol component.
Thanks a lot in advance