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Reflection and transmission in HFSS

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Hello svarun!

How do you define the reflection coefficient in case of infinite plane wave ?
Along the line ? Or you have to put a kind of boundary around your slab to normalize the reflected power.
 

Well, that is a part of the question. The usual thing is to measure transmitted field and then get the Tx coefficient and then find the reflected coefficient. How do I go about in this case ?

What I am doing is to have a slab, draw airbox around it and put periodic boundary conditions on 4 sides and RAD boundary conditions on +z and -z faces of the air box. From +z I shine plane wave, I need to measure the reflected power across the -z face.

Iwant to know if the setup is okay and if yes, how do I measure the power flowing acdross the -z face of the air box ?

svarun
 

I suggest to use HFSS and simulate the problem and find S parameters at any plane you want. You will have transmission and reflection parameters.

Regards
 

svarun said:
What I am doing is to have a slab, draw airbox around it and put periodic boundary conditions on 4 sides and RAD boundary conditions on +z and -z faces of the air box. From +z I shine plane wave, I need to measure the reflected power across the -z face.
svarun
Click to expand...
Still it's not clear to me. In your definition the reflection depends on period of slabs in the space, doesn't it ?
With zero airbox it is just a reflection from the infinite interface of air and dielectric
 

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