Anisotropic Self-Complementary Metasurfaces (SC-MTSs) are structures constituted by an alternation of complementary inductive and capacitive strips, which are “self-dual” according to Babinet’s duality principle. They support the propagation of two orthogonally polarized surface-wave modes with the same phase velocity along the principal directions (i.e., along the strips and normal to them). The isofrequency dispersion curves of these modes are hyperbolas, and therefore, these MTSs fall in the category of hyperbolic MTSs. It is shown here that the hyperbolic dispersion curves may degenerate in same cases into almost straight lines, which implies that the velocity of energy transport is constantly directed along the same direction for any possible phasing orthogonal to the strips. In this circumstance, the SC-MTS can be conveniently used to design dual-polarized leaky-wave antennas by modulating the impedances of the complementary strips.

中文翻译：

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自互补超曲面中的双模双曲性、超通道化和泄漏

各向异性自互补超表面 (SC-MTS) 是由互补电感带和电容带交替构成的结构，根据巴比涅的对偶原理，这些带是“自对偶的”。它们支持两个正交偏振面波模式以相同的相速度沿主要方向（即，沿条带并垂直于条带）传播。这些模式的等频频散曲线是双曲线，因此，这些MTSs属于双曲线MTSs的范畴。此处显示，双曲线色散曲线在相同情况下可能会退化为几乎直线，这意味着对于与条带正交的任何可能相位，能量传输速度始终沿相同方向定向。在这种情况下，