<![CDATA[Orientation of antennas affect simulation results]]>Hello,

I have a question regarding simulating multiple antennas. I have placed 8 antennas in a circle and simulate them with a gaussian pule. Despite the 8 antennas being identitical and with only air between them, the reflection parameters are different between the antennas (shift in frequency and magntidue). What can cause this and how can I rectify it? I have attached images of the setup and the S-parameters?

And the differences in S-parameters seem to be with alterante antennas. for example antennas 1,3,5,7 (counting clockwise) are similar and antennas 2,4,6 and 8 are similar.

59e90b2d-92d1-41d6-827c-f473e84fb000-image.png

9a9bdbbf-8f46-4c9c-a21d-dbcd5adf8906-image.png

The brown ones are for odd antennas and yellow for even number. But all antennas are identitical

Thanks

]]>https://forum.zmt.swiss/topic/583/orientation-of-antennas-affect-simulation-resultsRSS for NodeThu, 08 Oct 2026 22:50:17 GMTFri, 02 Feb 2024 14:31:17 GMT60<![CDATA[Reply to Orientation of antennas affect simulation results on Mon, 12 Feb 2024 10:46:06 GMT]]>Thanks Ofi. How can I fix this or is this something I need to account for?

]]>https://forum.zmt.swiss/post/1764https://forum.zmt.swiss/post/1764Mon, 12 Feb 2024 10:46:06 GMT<![CDATA[Reply to Orientation of antennas affect simulation results on Mon, 12 Feb 2024 10:41:50 GMT]]>Hi, yes it is due to the discretization. You can compare the voxels of the dipole arms and the edge sources of, for example, dipoles # 3 and 4.

]]>https://forum.zmt.swiss/post/1763https://forum.zmt.swiss/post/1763Mon, 12 Feb 2024 10:41:50 GMT<![CDATA[Reply to Orientation of antennas affect simulation results on Fri, 02 Feb 2024 16:54:34 GMT]]>Could it be due to discretization? Like edges are longer when they are at an angle?

]]>https://forum.zmt.swiss/post/1757https://forum.zmt.swiss/post/1757Fri, 02 Feb 2024 16:54:34 GMT