3D antenna design in ADS

dear friends

i have ADS 2009 update 1 installed on my system. i want to make a 3D antenna. this version contains EMDS for 3D simulation but what si parameters really define a 3D antenna. i mean so i just have to increase the thickness of the copper to make it 3D.
i dont have any idea of making a 3D antenna. i dont want to use HFSS so help me out in ADS gys

U need to define the air box which is generally very small by default in ADS,
u need to define the airbox as open on all dimensions in ADS..
Dont make use of inbuilt gnd option which by default is considered to be as infinite gnd plane...
Its difficult to draw 3d objects in ADS alone u need to make use of EMDS 3d drawing ...or some other 3d drawing and port it into ADS...Thats the difficult part.

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