Polarized Antennas with enhanced performance using Metasurfaces

I am trying to design two antenna models in ANSYS HFSS. Both antennas are with metasurfaces, I want one antenna to be circularly polarized and another one should be linearly polarized. I don't have much time and I want someone who is good at designing and simulating antennas on HFSS or CST antenna designer software. I have already made one model but I still need some modifications to it. I am uploading some papers so that one can get an idea of what kind of antenna I want to design and simulate. The document contains the link of IEEE papers from which I am getting ideas for my design.