Axial Ratio vs dielectric thickness vs N of inputs

Dear friends,

I'm working with different patch configurations.

Single layer probe-fed patch antenna in Circular Polarization.

I need to optimize the Axial Ratio.

My understanding is that, using two different probe input orthogonally located I can have an improvement on the Axial Ratio BW (AR levels and bandwidth) respect to the configuration of single input.

One friend of mine considers that, increasing the thickness of the dielectric an improvement on the Axial Ratio can be achieved still using a single input.

I don't agree at all. Who is right?

Comments are welcome.

Regards,

Lupin

Hello mate,

What you think is right . There is a clear improvement in Axial ratio when we consider a dual feed antenna over single feed when you require circular polarization
There has been no research ,neither has there been observed much effect when changes in the thickness of dielectric affect axial ratio