loop antenna usingHFSS -- URGENT NEEDED FOR THESIS

Hi

I have attached a loop antenna layout. It is to be done on a PCB.
Please see the HFSS project file attached
It is to work at 434MHz.

https://www.edaboard.com/viewtopic.p...013643#1013643

I have the following doubts.
1. Do i need to have a ground plane.
2. How to exite the antenna. the input to the antenna is on the center of the loop on the x axis.
3.how to simulate and get the s parammeters and the gamma.

Everybody please help. needed for my thesis and i am not an antenna student.

Please help...