port for coaxial cabel

bad S11 value for coaxial cabel Me needed -30 Db

Missing termination?

Besides posting a HFSS project you would want to describe in a brief what you are doing.

Have a look at this tutorial it is not in English but it is very ellaborative to make a co axial cable.
You can very easily follow the steps in HFSS

https://www.youtube.com/watch?v=TgCdSNk5lPg

I have attached my coaxial probe-fed patch antenna while going thru a getting started tutorial using HFSS 13. My S11 is around -3 dB, when it should be closer to -30 dB or better. I'm not sure why. Who can help me?

nomigoraya- and in the video S11 = 0