[HFSS][CST]Designing a 13.56MHz RFID antena

I am designing a 13.56MHz RFID antena.

Using HFSS and the coiled antenna, I did all the steps, but I can't make the right one.

Here is my project.

Anyone help?

Or send me a right antena for reference. My email is: wasdkick@gmail.com

Thanks.