文档介绍:电磁波实验报告-天线幅频特性
of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities
of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities
of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities
专业:_ _
姓名:__ _______
学号:______
日期:_2010年10月7日_
地点: ___________
实验报告
课程名称: 电磁场与微波技术实验 指导老师:__ ___ _______成绩:__________________
实验名称: 天线的辐射特性测量 实验类型: 同组学生姓名:_________
一、实验目的和要求(必填) 二、实验内容和原理(必填)
三、主要仪器设备(必填) 四、操作方法和实验步骤
五、实验数据记录和处理 六、实验结果与分析(必填)
七、讨论、心得
装 订 线
实验目的和要求
揭示喇叭天线的辐射特性
覆盖的基本概念:天线辐射方向图 波束宽度 天线的极化特性 电磁波在空间传播中与距离的关系
实验内容和原理
当今社会尽管人们不一定知道无线寻呼、蜂窝电话、卫星通信、无限广播与电视的具体工作原理,但是他们已成为人们生活不可缺少的一部分。在这些无限通信系统中不管是发射还是接收,天线都是一个不可缺少的部件。描述天线的参量很多,则其主要的有:天线方向图、辐射方向土、波速宽度、旁版电平、工作频率与响应、效率等等。除此之外,天线发射(或接收)电磁波都具有极化特性,所谓极化是
of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities
of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities
of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities
指电磁波电场矢量的方向,所以接收机接收到的信号大小跟收、发天线的安装方向有关。如果发射天线所发射电磁波的极化方向与接收天线的极化方向一致时,接收信号最大,若两者正交,接受机将接收不到信号