Reflection of electromagnetic waves from rough waveguides

The reflection coefficient of a section of randomly rough waveguide is calculated using a coordinate transformation developed by A.K. Mallick and G.S. Sanyal (ibid., vol.26, no.4, p.243-9, 1978). A perturbed analysis which assumes that the amplitude of the roughness is small compared to the average width of the waveguide is performed. A drastic difference at long wavelengths between TEM on the one hand and TE and TM on the other has been found.<
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