Weird phase illustration with FEKO

Haj Hassan

Hello,

we are currently working on metasurfaces to generate OAM waves or vortex waves.

We are getting the correct radiation pattern, but some how we are getting the wrong phase.

It should look like the picture of correct phase.

Is there anything i should pay attention to it in FEKO?

 

Thanks in Advance.

Best Regards

M. Haj Hassan

 

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Mel

You may need to set the near field request to compute only the scattered part (to exclude the source contribution).

 

Secondly, is the 0.1 mm gap between the large rectangles below intended? If the gap is correct, the meshing on the metallic edges on both sides of the gap should be roughly similar to the gap width, maybe try 0.3 to 0.5 mm.