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Propagation of wave in a cylindrical waveguide filled with hyperbolic negative index medium

机译:波在圆柱形波导中的传播填充有双曲线负指数介质

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摘要

A co-axial waveguide is filled with an anisotropic hyperbolic medium that has a radial negative component of the tensorial permittivity and permeability. This waveguide has no cutoff frequency for propagating transverse electric and transverse magnetic modes. These modes of propagation are described by Bessel functions of first and second kinds (Neumann function) with an imaginary order. This feature of below cutoff propagation is useful for miniaturizing the size of the waveguide. Further, the double negative character of the radial components of the permittivity and permeability also occasion a better impedance match of the waveguide to free space. Such waveguide can be projected to be useful as miniaturized efficient coupler and imaging probes.
机译:共轴向波导填充有各向异性双曲介质,其具有姿势介电常数和渗透性的径向阴性成分。 该波导没有截止频率,用于传播横向电动和横向磁性模式。 这些传播模式由第一和第二种(Neumann函数)的Bessel函数以虚数为描述。 下面的截止传播的该特征对于小型化波导的大小是有用的。 此外,介电常数和渗透率的径向分量的双负特性也是波导与自由空间的更好的阻抗匹配。 这种波导可以被投射为可用作小型化的有效耦合器和成像探针。

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