Error in HFSS when simulating a log-periodic dipole antenna

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zfkyo

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problem about HFSS

I use software of HFSS to simulate the log-periodic dipole antenna which has 12 pairs of dipoles.When analying,the window of message manager says that :[error] Initial mesh, process mesh3d : Unable to recover all the surface triangles.I don't know how to solve this problem, so I want someone's help.
 

Re: problem about HFSS

I have just a comment on using HFSS and is that you must make your structure as simple as possible.
when you consider everything and make a complicated structure, that will take more time and also your computer need more RAM.

Regards
 

problem about HFSS

I think (as mreza1355 said) you made your structure rather complex, and you may have even created some intersecting 3D objects. try to unite them using boolean\unite.

I think this error appeared while creating the 3d mesh to be used in solving the antenna. so I believe it is mainly due to some mistake in creating the structure.
 

Re: problem about HFSS

I hve had the same error before and I have tried the "unite function and it has fixed some things but in some cases Istill got the same error. I contacted the tech support before about this issue and he mentioned to me to change the adaptive freq. to your resonant frequency. THis fixed my problem with this error. I had to fine tune the adaptive frequency.
 

Re: problem about HFSS

hi,

please refer to the following post: and my answer



hope this helps
 

Re: problem about HFSS



hihi zfkyo, can you tell me how to create the model of LPDA
or , you send it through email is appreciate.
and it is : fanqikai@163.com
Thanks in advance
 

Re: problem about HFSS

I met similar problems before,and I solved it through this ways:
1 your antenna is a wideband antenna,so for the solution frequency,you had better choose the middle frequency of the frequency band
2 for the diogue:solution setup,for the tab"advanced",tick "ues the lower order solution" and change the target to about 0.1
3 recommend you to add your RAM to IG
 

Re: problem about HFSS

it is a buge of HFSS!
 

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