Diffraction Radiation from a Slot in the Impedance End of a Semi-Infinite Rectangular Waveguide
2004
Using the induced magnetomotive force method, we obtain an approximate analytical solution of the problem of diffraction of the H10 mode by a narrow slot which is cut in the impedance finite-thickness wall on the end of a semi-infinite rectangular waveguide and radiates into free half-space over an infinite, perfectly conducting screen. The scattering-matrix coefficients of a slotted waveguide radiator are studied numerically for the values of the complex surface impedance which correspond to some particular types of a thin-film coating of the waveguide end wall.
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