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arm_52
Antenna-Theory.com Newbie
Joined: 31 Jul 2011
Posts: 5
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 Posted: Sun Jul 31, 2011 1:03 pm Post subject: meshing in feko |
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i want to get the vswr of a horn antenna at x band freqency that i simulated with feko 5.2.
but with different meshing i get so different vswr
who can help me what is the best meshin? |
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Schubert
Antenna Wizard
Joined: 08 Apr 2009
Posts: 161
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| Posted: Sun Jul 31, 2011 5:48 pm Post subject: |
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I believe triangle mesh should have sides that are no more than lambda/8. To see if a mesh is good, one check is to decrease the mesh size (try lambda/10 or less). Then if you get different results, you have a bad mesh.
If different meshes are giving you different answers, you need to spend time modeling something you know the answer to (i.e. the vswr of a horn or dipole that you can verify). Then ensure you are getting the correct answer. |
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arm_52
Antenna-Theory.com Newbie
Joined: 31 Jul 2011
Posts: 5
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| Posted: Sun Jul 31, 2011 6:14 pm Post subject: |
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| Schubert wrote: | I believe triangle mesh should have sides that are no more than lambda/8. To see if a mesh is good, one check is to decrease the mesh size (try lambda/10 or less). Then if you get different results, you have a bad mesh.
If different meshes are giving you different answers, you need to spend time modeling something you know the answer to (i.e. the vswr of a horn or dipole that you can verify). Then ensure you are getting the correct answer. |
hi.tanx for reply
i get so much diffrent vswr with about lambda/10 and smaller than it.
i didnt undrstand what should i do can you explain plz?
tanx alot |
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