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Unformatted text preview: mode TM mn ? 1 Phys 3327 Fall 2010 HW 9 Due Wednesday 11/10/10 in lecture c) Find the transverse components of the electric and magnetic elds in the waveguide. d) What is the magnitude and direction of the Poynting vector for the mode TM mn , averaged over time and over the cross section of the wave guide? Ex. 9.3: Waveguide with circular cross section Heald & Marion ex. 7-13. Suggested problems for further study: Loss A rectangular hollow-conductor waveguide of dimensions a b has walls made of good, but not perfectly conducting metal. Estimate the loss per unit length for the funda-mental ( n = 1) mode in this waveguide. Your answer should contain the dependence on the skin depth of the wall conductor, the frequency of the EM wave, a and b (if applicable), but you need not specify the precise numerical prefactor. Resonant Cavity : Heald & marion, ex. 7-14. 2...
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