2022年工程电磁场复习提纲.pdf

电磁场理论复习提纲一、矢量分析与场论基础主要内容与问题：标量、矢量、单位矢量、通量、环量、梯度、散度、旋度的概念，理解其意义；标量和矢量的基本运算；关于梯度的旋度和旋度的散度重要性质；能够正确区分常用物理量是矢量场还是标量场；正交曲线坐标系中散度和旋度的计算公式；矢量场的构成，Helmholtz 定理；二、静电场和恒定电场静电场主要内容与问题：理解静电场和恒定电场的概念库伦定理和高斯定理四种电荷类型和电偶极子的概念静电场的性质，即散度和旋度。电位（势）函数与电场的关系，静电场基本方程和边界条件；介质束缚电荷面密度和体密度与极化强度的关系自由电荷面密度和体密度与电通量密度之间的关系恒定电场主要内容与问题：理解恒定电场的概念电流连续性方程三种电流类型?恒定电场的基本性质，即散度和旋度，以及它的基本方程和边界条件；?导电媒质中电流密度与电场强度之间的关系三、边值问题的解法主要内容与问题：边值问题的概念及分类；泊松方程和拉普拉斯方程唯一性定理及其意义；镜像法求解原理及注意要点分离变量的主要思想、方法和关键问题；四、恒定磁场主要内容与问题：恒定磁场的概念；安培力定律和毕奥萨伐尔定律；磁场的基本性质，即散度和旋度，以及它的基本方程和边界条件；安培环路定律文档编码:CZ9G3K5Y4M7 HA3D2Y7V5V7 ZC3F4G10V1A8文档编码:CZ9G3K5Y4M7 HA3D2Y7V5V7 ZC3F4G10V1A8文档编码:CZ9G3K5Y4M7 HA3D2Y7V5V7 ZC3F4G10V1A8文档编码:CZ9G3K5Y4M7 HA3D2Y7V5V7 ZC3F4G10V1A8文档编码:CZ9G3K5Y4M7 HA3D2Y7V5V7 ZC3F4G10V1A8文档编码:CZ9G3K5Y4M7 HA3D2Y7V5V7 ZC3F4G10V1A8文档编码:CZ9G3K5Y4M7 HA3D2Y7V5V7 ZC3F4G10V1A8文档编码:CZ9G3K5Y4M7 HA3D2Y7V5V7 ZC3F4G10V1A8文档编码:CZ9G3K5Y4M7 HA3D2Y7V5V7 ZC3F4G10V1A8文档编码:CZ9G3K5Y4M7 HA3D2Y7V5V7 ZC3F4G10V1A8文档编码:CZ9G3K5Y4M7 HA3D2Y7V5V7 ZC3F4G10V1A8文档编码:CZ9G3K5Y4M7 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ZC3F4G10V1A8平面电磁波的基本性质；产生这些性质的物理原因；波长、相位常数、周期、角频率、频率、相速度、波阻抗衰减常数、传播常数、相位常数的定义以及他们之间的关系；复介电常数和损耗角正切的定义以及他们的意义趋肤效应和趋肤深度以及同导电率之间的关系平面电磁波的极化特性及其描述方法以及极化方式的判断理解相速、群速和色散现象的概念以及色散现象的分类；色散介质中电磁波信号传播的特点和问题；电磁波垂直入射时的特点，入射波反射波，透射波的解，波阻抗，反射系数，透射系数的计算，电磁场波腹点和波节点分布问题。7、传输线主要内容与问题：理解长线和短线的概念；特性阻抗、传播常数、反射系数、输入阻抗、电压驻波比的定义和他们之间的关系，重点是无耗传输线；开路传输线、短路传输线和1/4 波长传输线的特点。Simth 圆图，要明白等电阻圆、等电抗圆和等反射系数圆或等电压驻波比圆在Simth 圆图上的分布情况，短路点、开路点、和它的转向等，能够判断落在Simth 圆图上不同点处的归一化阻抗、电压驻波比、反射系数的大小。文档编码:CZ9G3K5Y4M7 HA3D2Y7V5V7 ZC3F4G10V1A8文档编码:CZ9G3K5Y4M7 HA3D2Y7V5V7 ZC3F4G10V1A8文档编码:CZ9G3K5Y4M7 HA3D2Y7V5V7 ZC3F4G10V1A8文档编码:CZ9G3K5Y4M7 HA3D2Y7V5V7 ZC3F4G10V1A8文档编码:CZ9G3K5Y4M7 HA3D2Y7V5V7 ZC3F4G10V1A8文档编码:CZ9G3K5Y4M7 HA3D2Y7V5V7 ZC3F4G10V1A8文档编码:CZ9G3K5Y4M7 HA3D2Y7V5V7 ZC3F4G10V1A8文档编码:CZ9G3K5Y4M7 HA3D2Y7V5V7 ZC3F4G10V1A8文档编码:CZ9G3K5Y4M7 HA3D2Y7V5V7 ZC3F4G10V1A8文档编码:CZ9G3K5Y4M7 HA3D2Y7V5V7 ZC3F4G10V1A8文档编码:CZ9G3K5Y4M7 HA3D2Y7V5V7 ZC3F4G10V1A8文档编码:CZ9G3K5Y4M7 HA3D2Y7V5V7 ZC3F4G10V1A8文档编码:CZ9G3K5Y4M7 HA3D2Y7V5V7 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