CST incident angle - frequency results not the same as time

[mirshahram]

CST incident angle

-I use CST for simulation EBGs. I want to find the angular satbility for an EBG for TEM (plane wave). I know it is possible to use unit cell boundary condition but its results is for TE and TM.

-Fourthermore, the results in frequency domain solver even for zero incident angle is not same as time domain solver (when use waveguide method to illuminate the structure) do you know why?

 

[piboo]

CST incident angle

Hi

1/See this post:



When your wave is not normal to the surface, your TEM is decomposed in TE mode and TM: the electric is not always on the incident plane.

2/ I think you have to correct your mesh: for a theta=0 I always have the same results.

regards

piboo

 

[mirshahram]

Re: CST incident angle

Dear Piboo
would you please send an example to me. because I don't have same results for Zero incident angle also I dont't know how can change properly the mesh.

 

[shahid78]

Re: CST incident angle

hi

well i dont know whether its possible to find the angular stability for TEM .

when the angle changes you no longer have TEM wave as pointed out by piboo.
but it decomposes into TE and TM waves.

and u should get same results for normal incidence whether you use TD or FD solver.

regards

 

[mirshahram]

Re: CST incident angle

Thanks shahid 78 and Piboo
I attached my files would you please correct it? because I can not find the same results even for zero angle.