Antennas Softwares

HFSS ansoft is the best one......

i think HFSS is a good soft for ant 3-D structure simulation

For a general purpose antenna design, Ansoft's HFSS is good, but it requires a lot of RAM. CST studio is also very good, but it also requires a high performance computer. You can also try IE3D or SuperNEC. For reflector type antennas, try TICRA (grasp9). For antenna links and networks COBRA is pretty good. Hope this helped.

could you please elaborate about the "a lot of RAM" of HFSS and "a high performance computer" of CST. My laptop 2.2GHz, 1Gb RAM, I'm wondering if it could stand with them!?

You can go ahead and install the software, your laptop looks fine with the configuration it hs

It depends on how large the structure you want to simulate actually.

You might need more ram and harddisk when your structure gets bigger.