Simulation of shortwave antennasin MWS and HFSS

Have anyone tried this?
I know Mininec, NEC-2, etc is probably the first choice for these simulations. But how about using MWS and HFSS? Any limitations at these low frequencies when e.g. wire and element thickness is much smaller compared with the wavelength? How about meshing, etc?

On this low frequencies MoM based simulators like NEC are quite enough and highly accurates.
Of course MWS and HFFS can be used, just make discrete port excitation in this case.

hi ,are u use IE3D ,if yes,here an example of monopole over finie ground with its results

IE3D is tooooo sloooooooooow and GUI is not optimized.
Try to use 4nec2 as free or the best comercial MoM WIPL-D. They can solve in second your structure.

The example of monoploe over a finite ground plane doesn't say much about the "low-frequency" performance of the code. Try problem requiring lmbda/1000 mesh.
30MHz is not necessarily low frequency?
How does WIPL-D solve the monopole on finite ground problem in seconds?

Question is about MWS and HFFS so 30 MHZ is low frequency in this case.
Monopole antenna with MoM code can be solved and optimized very quickly(in a second) because it contain wire and plates models so structure contain small number of elements(unknows). IE3D have not wire element so to solving posted example need 2500 unknows.