Learning Forum

[Bill Perkins]

I'm using HFSS to simulate and antenna. Everything works great if my ground and antenna materials have conductivity greater than 1x10^6 S/m. 

Unfortunately, I'm working with a material whose conductivity is around 5x10^5 to 8x10^5 S/m.
If I use a modal lumped port I get warnings that there are no conductors connected to the port, put the simulation runs.

I'm unable to configure a terminal lumped port at all because there are no options displayed for the reference designation.

How can I get HFSS to recognize my material as a conductor?

[Aymen Mzoughi]

To have HFSS recognize your material as a conductor, you can assign a finite conductivity to the material. This is done by selecting 'HFSS > Boundary > Assign > Finite Conductivity' in the HFSS GUI. You would then assign the finite conductivity boundary to the solid object representing your material. 

[Bill Perkins]

Thanks for the help Aymen.  My design is currently modeling a thin film as a two sided layered impedance. Would a finite conductivity properly account for thin film properties? My material is around 320-380 nm thick.