HFSS - How can I create a material with a gradient index.

Hello everybody,

I'm a new HFSS user and I need to simulate a material that have a gradient refraction index.

All I could find is where to define a constant index/epsilon/mau , anyone can help?

Thanks.

if u opened the materials window u will find {frequency dependent materials) just marked it and u can deal with eipslon as a function of f

I'm sorry I wasn't clear, I need a spatial dependence and not a frequency dependence.

Is it possible in HFSS?

Thanks.