信号与通信系统篇目录

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目
录
第一章
绪论 Equation Chapter 1 Section 1 ............................................................................... 1
1.1
1.2
1.3
全国大学生电子设计竞赛简介 ....................................................................................... 1
信号与通信类考题解析 ................................................................................................... 2
信号与通信类赛题知识点 ............................................................................................... 4
第二章
信号的产生 Equation Chapter 2 Section 1 ................................................................... 6
概述 Equation Section 1.................................................................................................... 6
2.1.1 频率特性 ................................................................................................................ 7
2.1.2 输出特性 ................................................................................................................ 7
2.2 基本信号产生电路 Equation Section 2 ............................................................................ 7
2.2.1 正弦波信号产生电路 ............................................................................................ 7
2.2.2 非正弦信号产生 .................................................................................................. 10
2.3 锁相式频率合成 Equation Section 3 .............................................................................. 15
2.3.1 锁相环简介 .......................................................................................................... 15
2.3.2 PLL 频率合成器电路设计 .................................................................................. 18
2.4 直接数字频率合成 DDSEquation Section 4 .................................................................. 23
2.4.1 DDS 简介 ............................................................................................................. 23
2.4.2 基于 FPGA 的 DDS 波形发生器 ........................................................................ 24
2.4.3 常用 DDS 集成芯片举例 .................................................................................... 36
2.1
第三章
无线通信系统 Equation Chapter 4 Section 1 ............................................................. 45
通信信道、噪声与通信频段 Equation Section 1 .......................................................... 45
3.1.1 信道和信道模型 .................................................................................................. 46
3.1.2 噪声、信道容量和香农公式 .............................................................................. 48
3.1.3 信号接收强度、灵敏度和链路裕度 .................................................................. 49
3.1.4 常用通信频段 ...................................................................................................... 50
3.2 常用调制解调方式 Equation Section 2 .......................................................................... 51
3.2.1 模拟调制 .............................................................................................................. 51
3.2.2 数字调制 .............................................................................................................. 55
3.2.3 语音编码和声码器 .............................................................................................. 60
3.3 通信系统的组成 Equation Section 3 .............................................................................. 63
3.3.1 常见收信机结构 .................................................................................................. 63
3.1
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3.3.2 常见发信机结构 .................................................................................................. 65
3.3.3 信道复用和双工方式 .......................................................................................... 66
3.4 集成调制解调器 Equation Section 4 .............................................................................. 68
3.4.1 通用数字无线通信芯片 ...................................................................................... 68
3.4.2 专用数字无线通信芯片 ...................................................................................... 84
第四章
有线通信系统 Equation Chapter 5 Section 1 ........................................................... 100
有线通信系统 Equation Section 1 ................................................................................ 100
4.1.1 RS232 通信系统 ................................................................................................ 100
4.1.2 RS485 通信系统 ................................................................................................ 103
4.1.3 CAN 通信系统 .................................................................................................. 104
4.2 光通信系统 Equation Section 2 .....................................................................................110
4.2.1 光通信的基本概念 .............................................................................................110
4.2.2 光纤通信系统 .....................................................................................................117
4.2.3 无线光通信 ........................................................................................................ 125
4.3 网络通信系统及其他 Equation Section 3 .................................................................... 128
4.3.1 网络通信的技术基础 ........................................................................................ 128
4.3.2 有线通信网络 .................................................................................................... 130
4.3.3 无线网络通信 .................................................................................................... 136
4.3.2 ZigBee ................................................................................................................ 139
4.3.3 WIFI ................................................................................................................... 140
4.3.4 移动通信网络 .................................................................................................... 141
4.1
第五章
电源及电磁兼容 Equation Chapter 6 Section 1 ....................................................... 150
电源及电源管理 Equation Section 1 ............................................................................ 150
5.1.1 直流稳压电源的主要技术指标 ........................................................................ 150
5.1.2 常用整流滤波电路 ............................................................................................ 151
5.1.3 线性集成稳压电源 ............................................................................................ 154
5.1.4 开关型稳压电源 ................................................................................................ 156
5.1.5 电荷泵型直流-直流变换器 ............................................................................... 160
5.1.6 基准电压源 ........................................................................................................ 162
5.1.7 几种电源比较及设计注意事项 ........................................................................ 164
5.2 电磁兼容 Equation Section 2........................................................................................ 164
5.2.1 电磁干扰源及其耦合途径 ................................................................................ 165
5.2.2 接地、屏蔽及滤波 ............................................................................................ 168
5.1
第六章
真题解析 Chapter 7 Section 1 .................................................................................... 177
6.1
调幅信号处理实验电路 Section 1 ............................................................................... 177
6.1.1 任务要求与评分标准 ........................................................................................ 177
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6.2
6.3
6.4
6.5
6.6
6.1.2 题目分析 ............................................................................................................ 179
6.1.3 方案论证 ............................................................................................................ 179
6.1.4 理论分析与电路设计 ........................................................................................ 181
6.1.5 软件设计 ............................................................................................................ 186
6.1.6 系统测试方案与测试结果 ................................................................................ 187
远程幅频特性测试系统 ............................................................................................... 188
6.2.1 任务要求及评分标准 ........................................................................................ 189
6.2.2 题目分析 ............................................................................................................ 190
6.2.3 方案论证 ............................................................................................................ 190
6.2.4 理论分析与电路设计 ........................................................................................ 191
6.2.5 软件设计 ............................................................................................................ 194
6.2.6 系统测试方案与测试结果 ................................................................................ 195
自适应滤波器 ............................................................................................................... 197
6.3.1 任务要求及评分标准 ........................................................................................ 197
6.3.2 题目分析 ............................................................................................................ 198
6.3.3 方案论证 ............................................................................................................ 198
6.3.4 理论分析与电路设计 ........................................................................................ 199
6.3.5 软件设计 ............................................................................................................ 203
6.3.6 系统测试方案与测试结果 ................................................................................ 203
增益可控射频放大器 ................................................................................................... 206
6.4.1 任务要求及评分标准 ........................................................................................ 206
6.4.2 题目分析 ............................................................................................................ 206
6.4.3 方案论证 ............................................................................................................ 207
6.4.4 理论分析与电路设计 ........................................................................................ 208
6.4.5 软件设计 .............................................................................................................211
6.4.6 系统测试方案与测试结果 .................................................................................211
6.4.7 设计实现的实物图 ............................................................................................ 214
80MHz-100MHz 频谱仪 .............................................................................................. 214
6.5.1 任务要求及评分标准 ........................................................................................ 214
6.5.2 题目分析 ............................................................................................................ 215
6.5.3 方案论证 ............................................................................................................ 215
6.5.4 理论分析与电路设计 ........................................................................................ 217
6.5.5 软件设计 ............................................................................................................ 221
6.5.6 系统测试方案与测试结果 ................................................................................ 222
6.5.7 设计实现的实物图 ............................................................................................ 223
短距视频信号无线通信网络 ....................................................................................... 223
6.6.1 任务要求及评分标准 ........................................................................................ 224
6.6.2 题目分析 ............................................................................................................ 225
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6.6.3 方案论证 ............................................................................................................ 225
6.6.4 理论分析与电路设计 ........................................................................................ 227
6.6.5 软件设计 ............................................................................................................ 229
6.6.6 系统测试方案与测试结果 ................................................................................ 230
6.6.7 设计实现的实物图 ............................................................................................ 231
6.7 简易幅频特性测试仪 ................................................................................................... 232
6.7.1 任务要求及评分标准 ........................................................................................ 232
6.7.2 题目分析 ............................................................................................................ 234
6.7.3 方案论证 ............................................................................................................ 234
6.7.4 理论分析与电路设计 ........................................................................................ 235
6.7.5 软件设计 ............................................................................................................ 238
6.7.6 系统测试方案与测试结果 ................................................................................ 238
6.8 红外光通信装置 ........................................................................................................... 239
6.8.1 任务要求及评分标准 ........................................................................................ 239
6.8.2 题目分析 ............................................................................................................ 241
6.8.3 红外光信道传输模拟信号 ................................................................................ 242
6.8.4 红外光信道传输数字信号 ................................................................................ 245
6.8.5 红外管发射驱动电路与接收电路 .................................................................... 247
6.8.6 语音驱动及其他 ................................................................................................ 248
6.8.7 测试方案与测试结果 ........................................................................................ 249
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