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Hfss Mesh Operation

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21 Threads found on edaboard.com: Hfss Mesh Operation
hello everyone son i have designed a fractal antenna with my hfssv13, but when validate it it keeps saying "Non-manifold vertices found for part Patch". I've tried to upgrade it to v15 but didn't help. And I try to use Heal from Modeler, the problem is only in the vertices that links the left patch (of the first iteration) with base patch an
Hello everyone, I am interested in finding the field distribution inside a large resonant cavity at the resonant frequency. I can successfully simulate the cavity near the resonant frequency and use interpolating sweeps to zero in on the exact resonant frequency. Because the Q factor is so high (simulated at over 10,000), the sweep must necessar
To get a seed mesh, place a vacuum object (or unassigned surface) wherever you have very small gaps in the PEC/copper. Then, right click on the object and select "Assign mesh operation". Select Length-based, and for the minimium mesh size choose the smallest feature size (pitch) of the gap. This will ensure that (...)
hfss solves in frequency domain theoretically unrelated to the frequency scale. So it stacks in the mesh size. If I am not mistaken, technically it is limited by word precision (supposing they use 64bit processor PFU words) and machine accessible RAM size. I believe, it is from several Hz to optical region (depending on the problem size,
Hello, Does anyone know how I can set the coarsest mesh? My solution frequency is 8.4 GHz, but the whole structure is 500 mm by 500 mm by 500 mm that hfss runs out of memory when I run the simulation. I always used default meshing, but what should be the maximum length or maximum number of elements? Thanks in advance.
Hi I am trying to simulate a spiral coil with hfss. when the distance between winding is small -(wire dia 0.3mm - when gap is below 0.1mm) I believe the hfss relate the coil as one chunk of copper. I see it from the resistance and inductive results. is there a limit to the gap the hfss can calc? can I fix it using smaller (...)
1. When using solve inside, I would recommend adding a mesh seeding operation to "kick-start" the mesh in the conductor. Select the trace object, hfss > mesh operations > Assign > Inside Selection > Length Based. 2. Uncheck "Restrict length of elements" and Check "Restrict Number of (...)
I am new to hfss. I am doing a hfss design about graphene (0.34 nm) at 1 THz (3*10^5 nm wavelength). The layer is really small compared to the wavelength. The program just went wrong. But if I change the graphene thickness to 340 nm, which is 1000 times lager, the program will work. I don't know why. Is it because that the mesh setting is (...)
meshing is a time consuming action and reducing this precious time can cause a tremendous improvement in our field. I was wondering if it is possible to import initial mesh from another similar design and apply it to a new created design. is it possible? I am working on a SIW cavity backed antenna which is geometrically symmetric, but the radia
I've gone though the "UHF Probe" example in the hfss manual, and have have noticed something odd. In the tutorial it says "Far fields are calculated by integrating the fields on the radiatiuon surface. To obtain accurate far fields for antenna problems, the integration surface should be forced to have a lambda/6 to lambda/8 maximum tetrhedra
I cannot find a good explanation for the error "mesh leak is found for certain objects, do geometric repair on certain objects". The project I am working on has a significant amount of small objects. I am assuming that hfss is having a hard time meshing properly. I have already tried changing model resolution. Anyone have any suggestions.
Hi Techi Take a glance at hfss> mesh operation What is your simulated structure?
Hello, I want to limit the complexity of mesh used in my simulation, because it´s too high (about 200k-300k). I can do it defining a mesh operation and aplying it, but when the simulation starts this limit is not respected. Doy you know how to limit it? I tried using PML to decrease the size of the air volume around the (...)
Hi walaa, the meshing will definetly have an effect on your design. Restricting the mesh in certain sensitive regions of your design will usually improve the accuracy of your results, so long as its done correctly. One way you can check how good your mesh is, is by plotting the convergence of S11 (using adaptive pass instead of s
If there is too many critical angle in your design, set up the mesh over the edges will help hfss jump over some iteration in meshing.
Hello, does somebody know which mesh type is to chose in hfss for plane structures? And if I have a radiation box which mesh type is to select for this. I have read that for round structures with surface approximation the result will meet fast the convergence criterion. And to decide whether the mesh is good the (...)
Hi all, I am using hfss 11.1. In hfss, it is possible to select a particular object and assign mesh operation, for example to limit number of mesh. Before we actually run the simulation, it is also possible to do "apply mesh operation" to see the initial (...)
Using "On selection" "Length Based" feature of the "Assign mesh operation" one can improve the meshing on the surface. Very nice feature, but the mesh is fairly equal on the whole surface (center and edges). What I would like to do is to improve the mesh on the edges of the surface (where current (...)
If you post your project I can simulate it in hfssv10 to see if the directivity problem is fixed in the new version.
Hello!! I've trying to use this new tool at v9.2. I have desing and archimedian spiral, just for fun, it will turn into a log spiral soon but I have a problem. The primitive is given a thickness but when simulating it shows an error about abc3d. I attach the source code. Could somebody help me? Thanks in advance and forgive my english :S
nadnerb 0 mode (All E fields in the same direction) and a pi mode (opposing directions) ??? - "0-mode" means 0 degree phase shift, "pi-mode" - 180 degree phase shift per cell. My task is to tune the full cavity What does it mean "to tune" ? Do you want to match the input wg with cavity ? The left port (the larger