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Convergence In Hfss

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47 Threads found on edaboard.com: Convergence In Hfss
Set up the simulation domain more accurately? If you've already done this, convergence is really your only hope.
Try setting up a fine seed mesh, it may be convergence.
Try a convergence of delta s = 0.01 (-20dB). As well, you might want to do some more adaptive passes after convergence to make sure nothing changes.
Hi everyone, Building a microstrip patch antenna on hfss. I used a wave port and de-embedded it to start on the beginning of the inset feed of the transmission line. During the solution, the convergence is not happening even though i have 30 passes with DS = 0.01. The results are very big like 5.7e+86 etc.. Any thoughts? Thanks in advance
Hi vineelasri, This sounds like a convergence issue. What are your convergence criteria? Do you have a seed mesh? It could also be the port - what dimensions are you using? Is it a microstrip line?
Hello, i hae a prblem in my smulation for antenna monopole when i run this prject this anayse is ok and run is about 2 hours and fnaly he dsplay me error in cnvergence what is the solution please
Hi sandbo, In working with CPW lines in hfss, I've found that meshing the air gaps with a maximum length of half the gap width is sufficient for good convergence. I've also found that meshing the air gap seems to be more important than meshing the strip, which it appears what you are doing.
Hi , I am trying to simulate a structure in hfss and it does not have large number of meshes. Near convergence ( around 20 passes ) the total number elements are 286540. But my simulation slows down while computing Kyrlov matrices etc. I have to finish this simulation and to see the results. I will be very thankful for quick help. Thanks.
Hi all, Newbee, first post, and still learning the rules and etiquette of this place. Be easy, k. Here's the synopsis: I'm running an hfss driven terminal solution. The design is a spiral transformer--a single loop primary around a flat archemedean spiral of a few turns. I've read in various places that specifying port impedance does no
If you don't kow very well how to use it, default mesh is a good option in my opinion. Solution frequency is your frequency of interest, in your case 868MHz. 10x for your answer I have an other question, how I can verify the convergence after simulation?
Help !!!! Hi, I simulated a narrow band cavity filter around 20 GHz. Geometry is very simple ; no curve, no imported object, all faces straight, no exotic material....I've optimized my Bandpass filter's response with hfss version 11. convergence is very fast with a simple setup (Delta S =0.02 , min passe = 15 --> 10.000 tetraedra last adaptive
Hi everyone, I met a problem when I use hfss's Driven Terminal to simulate a structure. It is a warning, "Fast sweep setup, process hf3d: Poor convergence in seeding data." My simulation setup is following, Solution Frequency: 14.25GHz - Adaptive Solutions Maximum Number of: 20 Maximum Delta S: 0.02 - Adaptive Options Maximum Refin
hi i am facing a problem,when i designed antenna and simulate i got convergence and got good results but when i simulate on same pc after 1 hour i got some results very different from previous one,i checked only differnce in both design is convergence point and max delta number,results that normaly changes are axial ratio and gain normaaly changes
Hi, I have calculated E field and stored energy in a cavity using hfss eigen mode. So maximum delta (resonant) frequency is used as convergence criteria in this mode. Now there is a question: How E field or stored energy can be used as convergence criteria in eigen mode?
I am using a metamaterial as superstate to enhance gain of antenna.When i use 10 pass with center frequency 2.5 GHz for the frequency range of 1-3 GHz using fast sweep i got good result.But when i use 10 pass with center frequency 2 GHz for same frequency range of 1-3 GHz i got poor both the cases hfss shows that convergence criteria i
Hi all i read hfss user guide 11 but not able to understand the significance of convergence, adaptive meshing, discrete meshin, when we should choose in analysis set up as fast, linearcount , discrete and what they all mean help in this respect katik
The attached hfss file is for a half-wave dipole for 14.2 MHz. The dipole is only just over 1 m long, but is emmersed in water, so the relative permttivity is around 91, so it should resonate around 14.2 MHz or so, though perhaps a bit higher, as there is not a huge amount of water. The problem is, the mesh will not converge. It slowly converge
There are four different design's that are mentioned in the tutorial,and there are some errors as well that have to be fixed in this tutorial coming to your question.convergence is The criteria of hfss is based on S-parameter at the ports. S-parameter is the integration of field intensity on the port surface. So, S-parameter is considered converge
Hi I am facing problems with meshing in hfss for a waveguide filter design Can u suggest me any document of hfss inorder to setup the meshing and its convergence.. I can share my file with u ..if required. Thanks Venu
for most applications ΔS=0.02 is quite adequate. Decreasing the ΔS will result in a more complex mesh and more simulation time. Maximum number of passes of about 6 to 15 is enough. You can see the convergence data of your design by right clicking on the setup in project manager and selecting "convergence" from the pop-up menu. If it has