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| 从物理概念理解矩形波导的导波模式 |
| Understand the Modes of Rectangular Waveguide from Physical Concepts |
| 投稿时间：2022-01-14 修订日期：2024-03-07 |
| DOI： |
| 中文关键词: 边界条件 波导 模式 |
| 英文关键词: boundary condition waveguide modes |
| 基金项目:江苏省自然科学基金项目（BK20200757）；南京邮电大学研究生教育教学改革课题（JGKT22-XYB11） |
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| 中文摘要: |
| 本文从导体边界条件出发，解释矩形波导内不能存在TEMz模式，并分析TE_m0^z模式的场结构。根据波数和驻波概念解释导波的截止与传播以及导波的快波特性。从方向阻抗概念得到模式的波阻抗，最后由色散方程解释导波的色散特性。本文从物理概念推导出导波模式的各种特性，更有助于学生对导波模式的理解。 |
| 英文摘要: |
| Starting from the boundary conditions, the modes in a rectangular waveguide are discussed in this paper. The cutoff and propagation of the modes are explained according to the concepts of wave number and standing wave. The wave impedances of the modes are derived from the concept of directional impedance. Finally the dispersion properties of the modes are explained by the dispersion equation. In this paper, various characteristics of the modes are deduced by the physical concepts, which will help students to fully understand the modes in the waveguide. |
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