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Homework Help: Force felt by plates in a waveguide

  1. Nov 8, 2011 #1
    1. The problem statement, all variables and given/known data

    A TE_10 mode is propagating in a rectangular waveguide along the z-axis. If the waveguide is terminated with a perfectly conducting metal plate normal to the z-axis, then 100% of the electromagnetic radiation propagating in the guide will be reflected by the metal plate. If the dimensions of the guide are a by b with the cutoff frequency ω_c = cπ/a,

    1) what is the force felt by the metal plate due to the reflected radiation?
    2) if instead of a metal plate, a resistive plate which absorbed 100% of the incident radiation were used, what would be the force experienced by this resistive plate?

    2. Relevant equations

    F = q(E + v x B) ??

    3. The attempt at a solution

    For TE_10, B_z = B_o*cos(πx/a)??
  2. jcsd
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