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A broadband left‐handed (LH) waveguide operating above the cutoff frequency is presented. The unit cell consists of one‐shorted stub and two‐twisted posts. The structure induces double loops in the surface currents, resulting in enhanced inductance which broadens the negative permeability region. To analyze the LH properties of the structure, a 2‐port network cross‐connected equivalent circuit is...
In this paper, a broadband left-handed (LH) rectangular waveguide is presented. The unit cell of the metamaterial structure consists of two double L-shaped short stubs and two E-plane posts in a rectangular waveguide. The E-plane posts are crossly connected to two stubs which are embodied in the top and bottom plane of a rectangular waveguide. The metamaterial waveguide is modeled as a 2-port network...
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