hfss spiral
You can find under 'draw' a user defined primitive that is a square coil.I put a ground (GND) plane under the coil, assigning it the property of PEC to it and then connected the GND to the coil by a cylinder of some conducting material. I draw a rectangle between the other extremity of the coil and the GND assigned it a lumped source. To view the far field you can draw a rectangle sorrounding the structure and assigning it the boundary 'radiation'. I hope it's something useful to you
Added after 48 minutes:
sorry I mean sorrounding it by a box...