In this paper, an efficient wave concept iterative process algorithm is proposed to analyze a dynamically controllable grounded coplanar waveguide attenuator based on graphene at terahertz frequencies. The proposed modeling technique of graphene is based on waves concept, that is based on redefining the boundary conditions (surface current and electric field) in terms of incident and reflected waves. The developed algorithm integrates both the interband and intraband conductivities without involving volumetric discretization. Therefore, it consumes less simulation time and computational resources. Numerical studies are conducted to validate the accuracy, speed, and usefulness of the proposed technique. Simulation results demonstrate that the interband term of the graphene conductivity has a significant effect and cannot be neglected in the simulation. The performance of the attenuator can be improved by controlling the chemical potential of graphene, which can achieve an attenuation range from 0.29 to 13.2 dB.

中文翻译：

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波动概念迭代处理法基于石墨烯的动态可控太赫兹接地共面波导衰减器性能分析

本文提出了一种有效的波概念迭代处理算法，以太赫兹频率为基础，对基于石墨烯的动态可控接地共面波导衰减器进行了分析。提出的石墨烯建模技术基于波的概念，即基于入射波和反射波重新定义边界条件（表面电流和电场）。所开发的算法集成了带间和带内电导率，而无需进行体积离散化。因此，它消耗较少的仿真时间和计算资源。进行数值研究以验证所提出技术的准确性，速度和实用性。仿真结果表明，石墨烯电导率的带间项具有显着影响，在仿真中不能忽略。可以通过控制石墨烯的化学势来改善衰减器的性能，该化学势可以实现0.29至13.2 dB的衰减范围。