异形脊波导传输特性分析_毕业设计.doc

题 目 异形脊波导传输特性分析 学生姓名 学号 所在学院 物理与电信工程学院 专业班级 电子1204班 指导教师 完成地点 陕西理工学院 2016年 6月 5日  异形脊波导传输特性分析 作者： （陕西理工学院 ,物理与电信工程学院, 电子信息工程系2012级4班，陕西 汉中 723000） 指导老师： [摘要]在现代微波工程中，为了满足微波传输系统性能的某些需求，需要不断探索和研究具有特殊截面形状的各类新型波导，多脊波导的理论研究对解决实际问题有很好的参考价值。由于其能实现微波小型化及具有良好的宽带特性等优点，具有很好的工程应用价值。有限差分法突破了解析法只能分析结构简单的波导器件，并且应用其处理脊形波导结构具有不需要复杂的物理模型等许多优点。本文从泰勒级数出发推导出用有限差分法计算脊波导的截止频率，以单脊波导为例，编程计算及验证了单脊波导内TM波的截止频率，并分析计算了新型脊波导-梯形脊波导的TM波的截止频率，所得结果为多脊波导的设计与制作提供理论参考。 [关键词]有限差分；单脊波导；梯形脊波导；截止频率；TM波  The analysis of transmission characteristics about the shaped trapezium ridge waveguide Author： LuYang （Grade 11, Class 1, Major electronics and information engineering, School of Physics and Electronic Information Engineering, Shaanxi University of Technology, Hanzhong 723000, Shaanxi） Tutor： Chunjiang Shuai Abstract:In modern microwave engineering, in order to meet some of the requirements of microwave transmission system performance, we need to continue to explore and research new types of waveguide having a special cross-sectional shape, more ridge waveguide theory to solve practical problems for a good reference value. Due to its size and to achieve microwave has good broadband characteristics, etc., and has good engineering application value. Finite difference method to break the analytical method can only analyze a simple structure waveguide devices, and applications which deal with ridge waveguide structure has many advantages not require complex physical models. From the Taylor series starting deduced ridge waveguide by finite difference method cutoff frequency to a single ridge waveguide, for example, calculation and verification program within a single ridge waveguide cutoff frequency fi