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I would be ever thankful for free labor to better my own efforts as well... Pick a tool and go through tutorials to learn their use. HFSS has the Antenna Design Toolkit, at no extra cost, that creates many antenna models that are already parameterized and ready to solve.
Long and short of...
HFSS does not accept complex conductivities, though they can be entered. Correct representation would be to enter a negative permittivity and a conductivity for a material that exhibits a complex conductivity as a complex conductivity can easily be converted to a complex permittivity using the...
If your unit cell is either rectangular or square, then by solving for the first two modes (orthogonal polarizations), assuming you need no more than that, in the Floquet port you know all you need to know about the polarization dependence of a structure at a given angle of incidence. If your...
Accuracy, Speed, Cost.... Pick two ;) If you want fast and free it will not likely be an accurate solution. I suggest the use of HFSS as I have worked many metamaterial applications with success.
Kind Regards,
tallface
Please be aware that HFSS 11 is nearly 5 years old. The current version of HFSS has several new features and solvers to simplify the setup for UWB antennas, including output variable convergence and dependent mesh convergence. Also, with the new convergence features of the interpolating sweep...
I agree wholeheartedly... the effective wavelength of the current density excited on a planar metal sheet, or FSS, is induced by the projection of the incident field onto the structure. So for larger angles of incidence, the effective current wave vector is smaller than the incident wavelength...
Ashish... start a new thread, hijacking a thread is annoying and likely not going to result in productive answers for you.
Deborah,
As this is an electrically small antenna, there are several things to be aware of:
1) Since Gain will be very low, radiation box can be much closer than...
If you go to HFSS help, and hit search (HFSS14). You will see a hyperlink for "Introduction to HFSS" in the right window. This document is fantastic resource for all boundaries, excitations, solvers, etc.
Have Fun
if you have already closed HFSS and saved it...you are skrood. If HFSS is still open and you have not saved, then you can just close HFSS and upon being asked to save... choose NO!! As the project was not saved it will still have your project there in the *.hfss file.
Another thing to do...
All info needed is in the geometry tree... :) Perhaps you could call your ANSYS AE and have them walk you through it with that project in hand as an example of what you want to do.
Have Fun
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