Hi,
I am using EMPRO 3D simulation software to see the nano coil behaviour (behaviour like resistance and inductance).I used FDTD simulation but the result I got is not actually matching the resistance value conducted practically.I have no idea whether to use FEM or FDTD .Anybody has idea about this software?
regards,
spandana
You will probably do better with using the FEM, since the FDTD grid is aligned with the X,Y, & Z axies. Since you have a circular coil, in order to make the grid match your actual geometry, you will have to make the grid sizes rather small, which will increase the sim time and the memory used.
However, you may have a tougher time getting the RLC values from the S-Paramters generated; My suggestion would be to import the S-Paramters into ADS and use the TDR tool (In a data display, tools>front panel>SP TDR) to look at the TDR.
It is possible to use the FDTD to simulate what you want, but you will likely have to create the grid regions manually. In the project tree, under simulation domain, choose FDTD grid. Alternativly, you can create grid regions on the specific parts (this is what I do) by right clicking a part, chose gridding/meshing>FDTD Gridding properties. You will need the grid to resemble your part (view grid by, in the project tree, under simulation domain, choosing FDTD mesh. Then make sure the 3D mesh is turned on). As is usually the case when simulating, you will have to balance performance with accuracy.
All this being said, you may have a tough time simulating you loss. Simulation has historically had a hard time distinguishing between skin effect loss, resistive loss, dielectric loss, and radiating losses. Good luck!