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Communicated by H. AmmariThe effects of wall impedances on the radiation of the dominant transverse electromagnetic wave by an impedance loaded parallel-plate waveguide radiator immersed in a cold plasma have been analyzed. The solution to the governing mathematical model in cold plasma is determined while using the Wiener-Hopf technique. It is observed that the amplitude of the radiated field increases with increasing permittivity of the plasma. The work presented may be of great interest to quantify the effects of ionosphere plasma on the communicating signals between Earth station and an artificial satellite in the Earth's atmosphere.

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The effects of wall impedances with cold plasma permittivity on an E-polarized electromagnetic signal propagating through a parallel-plate waveguide immersed in a cold plasma have been analyzed. The Helmholtz equation in cold plasma is derived from the model equations. The solution of the Helmholtz equation in cold plasma is determined by Wiener-Hopf technique. From the solution it is observed that the amplitude of the diffracted field decreases with increasing permittivity of the plasma (i.e., by decreasing electron number density (or plasma frequency) or by increasing ion number density). The work presented may be of great importance to quantify the effects of ionosphere plasma on the communicating signals between an Earth station and an artificial satellite in Earthʼs atmosphere.