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Hfss Convergence

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59 Threads found on Hfss Convergence
hey there, what can i do, besides increassing maximum number of passes and decressing maximum delat energy to get more accurate results? thank you
hi i am designing a wave guide whose side walls are sinusoidal corrugated. the corrugation of the walls depend on several parameter parameter, one is called delta which supposed to be very small. i design a matlab code that generate the same result of hfss but only for small values of delta, and an upper bound on value of delta need to be known b
Hello I have designed a mono helical antenna in hfss with these settings: Solution type:Driven a Helix with these settings 126192 and "analysis" option: 126193 126194 and frequency sweep: 126196 and here is my design 126195[/AT
Hi guys Iv'e simulated an EBG structure described in IEEE paper simulated with hfss but my results are very far from the paper's results. What's my mistakes? It's a fat-dipole antenna above an EBG structure. See it. 125787 Substrate is FR4 (relative permittivity 4.5) and all dimentions described in the paper: Ultr
Hi, I think that because you're near or exactly at the resonant frequency, the field change rapidly, so hfss doesn't find an ideal adaptative mesh. I mean that between to simulations the S parameters evolve rapidly so the difference in S parameters changes and the convergence is not reached. A solution will be to take a solution frequency greater
Hi there! I just started working with hfss a while ago, so im still not totally aware of all relevant settings in my simulations. The following problem is nagging me right now: I am designing patch antennas that should work for a frequency range from 76-81GHz and transmit into a WR12 Waveguide. I got a few promising designs out of it and
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, Based on that information it seems that your port is adequately sized. Assuming its in the correct location as well, it does seem like this is a mesh/convergence issue. The default adaptive meshing in hfss is not particularly adequate unless you want to do alot more passes than you need to. I would set up a seed mesh on the por
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.
hello I am doing simulation on corrugated horn antenna in 15 GHz using hfss . after completing the simulation it gives following warning Adaptive Passes did not converge based on specified criteria. Normal completion of simulation on server: Local Machine. How can i remove this warning message and what do the
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
Take into account that in ADS Momentum Ground plane is infinite,not the same in hfss, so as jeedur says, a difference is expected.
simple, try it in CST time domain solver, the you know which hfss version is more reliable.
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

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