Abstract

Eigenmodes of waveguide EBG channels in an electromagnetic crystal that represents a 2D periodic array of metal cylinders with gaps containing lumped elements (LEs) are studied. The array of cylinders with LEs is installed between the screens of a planar waveguide. Control of propagation characteristics of the fundamental mode using variations in the LE capacitance in the cylinders inside the waveguide channel is analyzed. The problem of eigenmodes is solved with the aid of numerical simulation using periodic boundary conditions. A parametric analysis of the central frequency and the band of the single-mode regime is performed for two- and three-row EBG waveguides. It is shown that the highest (with respect to width) odd mode is the dominant factor that limits the working bandwidth.

中文翻译：

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具有集总元件的电磁晶体中的波导仿真

摘要

研究了电磁晶体中波导 EBG 通道的本征模式，该晶体代表具有包含集总元件 (LE) 的间隙的金属圆柱体的 2D 周期性阵列。带有 LE 的圆柱阵列安装在平面波导的屏幕之间。分析了使用波导通道内圆柱体中 LE 电容的变化来控制基模的传播特性。借助使用周期性边界条件的数值模拟来解决本征模式问题。对两排和三排 EBG 波导进行了中心频率和单模态频带的参数分析。结果表明，最高（相对于宽度）奇模是限制工作带宽的主导因素。