dual polarization

hi friends i need antenna design for dual circular polarization at 1.6 GHz
plz help me i am trying in hfss

What do you mean by "dual circular"?

hello Karthikeyan

There are multipleways you can get dual circular polarization(Debora he meant right hand circular and left hand circular). one having two feeds on two sides of the patch 90 degrees out of phase from each other. two have the patch fed on diagonally with two sources complimenting their position on the diagonal of the patch.

Is that helpful

Regards
Sajid Mohammed.