目 录
摘 要 .........................................................................................................................................1
ABSTRACT.................................................................................................................................2
第一章 绪 论 .............................................................................................................................2
1.1 课题背景 ...............................................................................................................................5
1.2 课题的目的和意义 ...............................................................................................................6
1.3 光接收机概述及其性能指标 ...............................................................................................6
1.3.1 信噪比 ............................................................................................................................2
1.3.2 误码率 ............................................................................................................................8
1.3.3 灵敏度 ............................................................................................................................2
1.3.4 动态范围 ........................................................................................................................2
1.4 论文组织 ...............................................................................................................................9
第二章 前置放大电路分析与设计 ...........................................................................................10
2.1 前置放大器概述 .................................................................................................................10
2.2 前置放大器类型 .................................................................................................................10
2.2.1 低阻型前置放大器 ......................................................................................................10
2.2.2 高阻型前置放大器 ......................................................................................................11
2.2.3 跨阻型前置放大器 ......................................................................................................12
2.3 跨阻型前置放大器的 Pspice 仿真.....................................................................................13
第三章 限幅放大电路分析 .........................................................................................................2
3.1 主放大器概述 .......................................................................................................................2
3.2 主放大器类型选择 ...............................................................................................................2
3.3 电路系统设计 .....................................................................................................................16
3.3.1 电路总体框图设计 ......................................................................................................16
3.3.2 电路性能指标要求 ........................................................................................................2
3.4 单元电路设计与仿真 ...........................................................................................................2
3.4.1 偏置电路 ........................................................................................................................2
3.4.2 使能控制电路 ..............................................................................................................19
第四章 总 结 ...........................................................................................................................22