How can change the angle of Iincidence in CST?

[mirshahram]

I am working with CST MW studio2006. My project is about artificialy magnetic conductor (AMC). I need to check my structure for different angle of incidence,For instance 45° or 60° angle between incidence wave and structure (In CST).

I used the box scan angle /phase in CST but I didn't get any acceptable result.

Would you please help me?

 

[iaia]

Hi mirshahram,
I am working with CST too and last week I had the same problem with an AMC when I tried to simulate the phase of the reflection coefficient. I asked the CST support for a help, but they told me that in CST the incidence angle cannot be changed.
I'm sorry!
If you find a solution, will you please let me know ?
Regards

 

[Pushhead]

Hi,

On the plane wave excitation dialog box you can define the propogation normal. Just translate the angle of incidence to unit vectors and set it there.

I think that is what you need, doesn't it ?

P.

 

[mirshahram]

Thank you for your attention. plane wave only work in homogenous material,and as I said before I must put my structure infront of plane wave and simulator send error and abortion.In another hand plane wave only work in open boudary condition and only for transiant solver, But I need periodic boundary.

 

[Pushhead]

In that case you are right. What exactly do you want to calculate with CST? Maybe the problem can be tackled from a different direction.

P.

 

[mirshahram]

I want to put my AMC or FSS strcture for different incidence angle as follows;

1- infront of the TEM wave or plan wave
(I cant because the simulator send error "plane wave can propagate only in homogenous material.)


2-inside of waveguide for (TE and TM) mode.
(I can't because the port is onle normal to aparture of waveguide)

 

[Pushhead]

Ok, I see. But what do you want to calculate? What type of results or parameters are you interested in? S-parameters? Fields? etc.

 

[mirshahram]

especially s-parameter now.But may be it will be necessary in future calculate the field.Then all of them.
I found a solution but I didn't chech it.I think it is so hard.
when I want to put my structure in waveguide the aparture of waveguide have the angle.then when you define the port the port also has angle
what do you think?

 

[shahid78]

hi mirshahram

did you manage to find the solution to the problem of simulating the S parameters of AMC for different angle of incidence

i am desparetely looking for the solution

your comments on this issue would be of great help

regards

 

[prafuldeo]

i think you should try the unit cell boundary condition. then you can choose oblique incidence..

 

[mengkun]

yes, I think if you set a unit cell boundary condition you can change the angle of the floquet port.