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  1. sutton304803

    Infinite Dielectric Plane?

    Is it possible to create an infinite dielectric object in FEKO? That is, an object with a defined upper Z direction boundary, but terminating at -infinity in the Z direction and infinite X and Y dimensions.
  2. sutton304803

    WARNING 2757 Consequences

    Thank you, mel. That's exactly what I was looking for!
  3. sutton304803

    FDTD and SAR Calculations

    Yes, and in addition I would like to start simulating more complex geometries, like realistic human head phantoms, for which I understand FDTD is more efficient. It sounds like I will need to find a different simulation software to accomplish this?
  4. sutton304803

    FDTD and SAR Calculations

    Does the FDTD solver support SAR calculations? I have been using MoM for SAR calculations and have attempted to set up my models in the same way with FDTD and am getting errors saying that SAR is not supported with the FDTD solver.
  5. sutton304803

    WARNING 2757 Consequences

    In a recent simulation where I modeled a conductor as a finite thickness region (having four conducting sides rather than as a 2D plane), I received the warning: WARNING 2757: A triangle is too thick as compared to the lateral dimensions for application of the skin effect approximation My question then is: what effect does this warning have on the simulation? Does FEKO simply ignore the triangles in question? Does it attempt the skin effect approximation anyway? Or does it use some other method to solve for these triangles? Any help would be appreciated! Thanks, Mark
  6. sutton304803

    Conductor Surface Thickness Setting Guidelines

    Thank you for the reply MvdM. I know this topic is old, but I'm still struggling to understand how the conductor thickness setting works. As you mentioned, I am modelling a relatively thick conducting trace that is near the skin depth for the frequency simulated and am thus modeling it as a finite thickness region having a four-sided rectangular cross-section. In this case, would it be most appropriate to set the thickness of the top and bottom conductors as HALF the actual thickness of the trace or both the top and bottom conductors each as the ENTIRE thickness of the trace. Your input would be greatly appreciated. Thanks again!
  7. I am using FEKO to simulate a small copper antenna (approximately 3.5cm x 3.5cm). Up to this point, I have been primarily using FEKO to analyze s-parameters. However, I would now like to start doing some basic specific absorption rate (SAR) studies and would like to recreate my physical setup as accurately as possible. In the physical experiment, I am interrogating the antenna using a Vector Network Analyzer (VNA) set to output 10dbm (0.01W) of power. My question is, what voltage/power settings should I use to simulate this power source? I am relatively new to electromagnetic simulations, so I apologize if the answer is obvious. My thought is to use power scaling settings set to transmission line model with 50 ohms of real impedance and 0 of imaginary (assuming a lossless transmission line). I would appreciate any input. Thanks!
  8. sutton304803

    Effect of Using Unions in FEKO

    Just a simple question: I know that creating a union between two objects in CADFeko will ensure that their meshes don't clash. That said, does creating a union have any additional effects on how the solver treats the two objects? I ask because computation times seem to be considerably longer and results quite different when nearby objects are unioned, even thought they aren't in direct contact. Is this simply due to the increase in mesh size/complexity? Thanks!
  9. I just getting started with FEKO and I need to add some real conductors to my model. Using the default solver, I understand that I need to set the relevant volumes to free space and corresponding faces to the desired conductor. However, I am a little confused on how to go about the "thickness" setting. If I am dealing with a thick conductor, my understanding is that I simply pick a value that is greater than skin depth for the metal and the simulation frequency. Is this correct? Also, in several of my simulations, the thickness of the metal in the model is actually less than skin depth. In order to model these realistically, what thickness do I need to set for the face material? Should I use the actual thickness of the metal for both the top and bottom faces? Half the real thickness for the top and bottom faces? Or the full thickness for the top face and no material set for the bottom face? Any insight would be greatly appreciated. Thanks!
  10. sutton304803

    Undo a Union in CADFeko

    I'm just starting out with FEKO and am new to modeling in general. The answer is probably obvious, but I have joined several objects in my CADFeko model together in a union and would now like to undo that union so that I have separate objects again. However, when I right click the union, the "disassemble" option is grayed out. How do I undo a union in CADFeko? Any help would be greatly appreciated. Thanks, Mark