The H-polarized eigenmodes of dielectric waveguide scattering by a finite system of graphene strips are considered in the THz frequency range. The waveguide has one perfectly electric conducting wall. The solution is based on the singular integral equations with Nystrom discretization. Such an approach is efficient and has guaranteed convergence. Dependences of the scattering characteristics on the frequency and the radiation patterns are presented. We study the properties of periodic graphene strip grating with the same values of the chemical potential on every strip and with different values of the chemical potential on every strip. In the first case, the radiation patterns with relatively high side-lobe level are obtained. In the second case, the side-lobe level is reduced to −20 dB.

在太赫兹频率范围内考虑了有限石墨烯条系统散射的介电波导的 H 极化本征模式。波导有一个完美的导电壁。该解决方案基于具有 Nystrom 离散化的奇异积分方程。这种方法是有效的并且保证了收敛。介绍了散射特性对频率和辐射图的依赖性。我们研究了周期性石墨烯条带光栅的特性，每个条带上的化学势值相同，每个条带上的化学势值不同。在第一种情况下，获得具有较高旁瓣电平的辐射图。在第二种情况下，旁瓣电平降低到 -20 dB。