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Optimization of the Eplane loaded rectangular waveguide for lowloss propagation
 Progress In Electromagnetics Research
"... Abstract—The insertion of vertical slabs in a metallic rectangular waveguide distorts the power distribution of the waveguide, producing new modes and modifying the existing ones. The resulting waveguide, known as Eplane loaded rectangular waveguide, is studied in this paper, focusing the attention ..."
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Abstract—The insertion of vertical slabs in a metallic rectangular waveguide distorts the power distribution of the waveguide, producing new modes and modifying the existing ones. The resulting waveguide, known as Eplane loaded rectangular waveguide, is studied in this paper, focusing the attention on the TEtype modes in a symmetrical case. A quasiTE10 is found which may confine the energy in the central air region by suitably choosing the dielectric slabs ’ dimensions. An algorithm to optimize these dimensions is proposed in order to maximize the confinement of power in the air region and minimize the attenuation of the mode. This minimization is specially important at high frequencies, where the ohmic losses and the dielectric absorption become extremely high. This paper includes an example at THz frequencies and presents the design of several devices using the Eplane loaded rectangular waveguide. 1.