Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Calculate the total reflectance on a surface

  1. Nov 24, 2009 #1

    I have a structure and I can calculate the reflection from the surface (S11 or S21)with different incidence angle.

    Now I would like to calculate the total reflectance of the hemisphere above the surface.. how can I integrate them all ?
  2. jcsd
  3. Nov 24, 2009 #2


    User Avatar

    Staff: Mentor

    What is the context of the question? I'm thinking that I should move this thread to a better matched forum instead of EE?
  4. Nov 25, 2009 #3
    the context is the reflection of electromagnetic wave, isn't it belongs here _?
  5. Nov 25, 2009 #4


    User Avatar

    Staff: Mentor

    If I read your question correctly, it is more about reflection at the atomic level, not the macroscopic level that EEs typically work at. Is this question for school, or for work? If for school, which class is it for? That would help me figure out where to put your question.
  6. Nov 25, 2009 #5


    User Avatar
    Science Advisor
    Gold Member

    No, I don't think this has anything to do with atoms. Sound like the question might be related to e.g. antennas.

    Let me see if I understand the question.
    You know S11(theta,phi), where theta and phi are the angles in spherical coordinates.

    Are you asking what S11 would be for an isotropic source of EM radiation?
  7. Nov 25, 2009 #6
    It is not a antenna question.. The S11 or S21 is just to describe the reflection and transmission.

    So now I am investigated the angle dependent transmission through a photonic crystal structure. ( with incident beam - wide range of freq). Now i need to know how can I calculate the total reflectance from the surface of my structure

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook