You will get s12, s13, and so on if you use these many "ports". Perhaps you are using single port, that is why you are only able to see s11.

And what about the far-field. I think for one-port you should get s11,s12,s13,s14 and for two ports s11,s12....s21,s22..s24.

Is it not like this?

About the ports

1 port: S11 (1x1 matrix)

2 ports: S11, S21, S12, S22 (2x2 matrix)

3 ports: S11, S21, S31, S12, S22, S32, S13, S23, S33 (3x3 matrix)

and so on.

For the far-field, you will need at least one open boundary to allow for radiation, as well as a far-field/RCS "field monitor" configured before running the simulation.

I hope this helps.

Okay I understood about the ports.

the s11 output is not resonating at the frequency in which I am operating may i know why?

and about far-field all are at open-boundary, but I am getting only "abs" plot. why is it?

Thank you.

FF