【正文】 optical fiber munication systems.In order to design an optical receiver which meets the performance requirements and has a simple structure, we analyze and design the preamplifier and limiting amplifier in detail, and we use the circuit simulation software Pspice for transimpedance type preamplifier’s DC analysis, AC analysis and temperature analysis. We also design and simulate unit circuit of limiting amplifier. Through the analysis of the two circuit design, we achieve the amplified target of high gain and large bandwidth, it can eliminate the effects of parasitic parameters largely and reduce the assembly of hybrid circuits, so the speed performance and reliability of integrated circuits can be improved significantly.Keywords: Optical Receiver, Frontend Amplifier, Preamplifier, Limiting Amplifier南通大學(xué)畢業(yè)設(shè)計（論文）3目 錄摘 要 .........................................................................................................................................1ABSTRACT.................................................................................................................................2第一章 緒 論 .............................................................................................................................2 課題背景 ...............................................................................................................................5 課題的目的和意義 ...............................................................................................................6 光接收機概述及其性能指標(biāo) ...............................................................................................6 信噪比 ............................................................................................................................2 誤碼率 ............................................................................................................................8 靈敏度 ............................................................................................................................2 動態(tài)范圍 ........................................................................................................................2 論文組織 ...............................................................................................................................9第二章 前置放大電路分析與設(shè)計 ...........................................................................................10 前置放大器概述 .................................................................................................................10 前置放大器類型 .................................................................................................................10 低阻型前置放大器 ......................................................................................................10 高阻型前置放大器 ......................................................................................................11 跨阻型前置放大器 ......................................................................................................12 跨阻型前置放大器的 Pspice 仿真 .....................................................................................13第三章 限幅放大電路分析 .........................................................................................................2 主放大器概述 .......................................................................................................................2 主放大器類型選擇 ...............................................................................................................2 電路系統(tǒng)設(shè)計 ...................................