Reflection Coefficient Calc????

[cdeguzma]

Hi...
I'm trying to solve a problem, and don't really know where to begin.
If you have freespace/material/freespace and are given permittivity, the thickness of material, and wavelength. How is one supposed to be able to calc the reflection coefficient? I vaguely understand how the wavelength effects it. Please help!

btw...if you haven't already guessed it...i'm a newbie at this.

thanks so much for your help

 

[DoctorX]

Isn't the reflection coefficient defined as Gamma = (Zin - Z0)/(Zin + Z0). Or were you trying to calculate the proportion of wave get reflected off the SURFACE of the material? In that case, it is in most electromagnetic books. I would prefer a textbook.

 

[springf2000]

maybe the condition is more complex if the boundary is not decided

 

[scoppulal]

HI

If condition are satisfied you can use small reflection theory:
there should be very little difference of impedence between the 3 layers.

you can find it on pozar's book.

 

[cdeguzma]

Thanks for all of the help...question was answered by a different forum