基于EDA平台的通信电子线路实验课件设计

论文总字数：28762字

摘 要

当今时代，信息通信技术发展飞速，日新月异。与此同时，计算机仿真技术凭借其速度快、精度高、容量大、复用性好、成本低等众多强有力的优点，成为各类软硬件设计在真正实现前，设计者进行仿真模拟的首选途径。本课题正是沿用这样的思路，利用基于EDA平台的Multisim软件和Labview软件进行信号处理，对数字调制解调系统中的幅度、频率调制解调进行计算机软件仿真模拟,并利用NI ELVIS硬件实验平台，将软件仿真和硬件设备结合，对比两者结果的一致性和差异性，并对其进行分析。

对模拟信号进行调制解调，是数字通信电子技术的基础内容。而进行调制解调可以有效减小对信号的干扰，提高通信系统本身对于外界干扰的抵抗能力，实现传输带宽和信噪比之间的高效互换。模拟信号的调制与解调，分为线性调制和非线性调制。

本课题基于对调制解调系统基础知识的详尽了解，首先介绍了集成模拟乘法器MC1496的结构和原理，利用集成模拟乘法器MC1496设计AM模拟调制解调器，在Multisim软件和Labview软件中对集成模拟乘法器MC1496进行幅度、频率的调制解调电路仿真，并与NI ELVIS硬件实验平台相结合，进行硬件实验电路测试。最后对软件仿真结果，和硬件实验电路测试所得数据，进行分析比较。

关键词：幅度调制解调；频率调制解调；同步检波；Multisim；Labview；ELVIS

Abstract

Nowadays,the information and communications technology develops rapidly.At the same time, computer simulation technology, relying on its advantages,such as fast speed, high precision, high-capacity,reusability, and low cost, are being applied to various types of hardware and software design.The subject is to follow this line of thought and manage signal processing and digital modulation and demodulation system in amplitude, requency modulation and demodulation computer software simulation and hardware experiment platform using Multisim software and Labview software ,which are based on EDA platform.And then,use NI ELVIS software to manage simulation and hardware combination, comparing to the results of both consistency and diversity, and analyzed.

Analog signal modulation and demodulation, digital communication is the basis of the content of electronic technology. The modem can be carried out effectively reduce signal interference and improve communication systems capability to resist outside interference, to achieve efficient bandwidth and SNR swap between. Modem analog signals into linear and non-linear modulation modulation. The double sideband modulation (AM) is a linear modulation. AM signal circuit implementation structure simple, and relatively poor noise immunity.

This paper is based on a detailed understanding of modulation and demodulation system, the first introduces the internal structure and the principle of integrated analog multiplier MC1496, MC1496 design AM analog modem use in Multisim software and Labview software platform for analog multiplier MC1496 amplitude modulated, FM circuit simulation, and combined with the NI ELVIS hardware test platform for hardware experiment circuit testing. Finally, the simulation results and the actual circuit will test data obtained were analyzed and compared.

Keywords: Amplitude modulation and demodulation; frequency modulation and demodulation; synchronous detector; Multisim; Labview; ELVIS

目录

摘要········································································1

Abstract····································································2

第一章 引言·································································3

1.1 研究背景····························································3

1.1.1 EDA平台软件介绍·················································3

1.1.1.1 Multisim软件介绍············································3

1.1.1.2 labview软件介绍·············································4

1.1.1.3 elvis软件介绍···············································5

1.1.2 通信系统中的调制解调技术········································5

1.2 研究目的····························································6

1.3 设计流程····························································6

1.4 论文主要内容························································6

第二章 调制解调实验系统的基本结构和原理·····································7

2.1 调制的原理和分类····················································7

2.1.1 数字调制························································7

2.1.2 模拟调制························································8

2.1.3 脉冲调制························································12

2.2 解调的原理和分类····················································12

2.2.1 包络检波····················································13

2.2.2 同步检波····················································14

2.3 振幅调制解调的具体实现··············································15

2.3.1 调制实现方案····················································15

2.3.1 同步检波的实现方案··············································19

第三章 MULTISIM中仿真实验··················································20

3.1 multisim振幅调制解调实验···········································20

3.1.1 仿真实现由MC1496构成的模拟调幅电路·····························21

3.1.2 乘法器的直流工作点··············································23

3.1.3 AM调制及解调结果···············································24

3.2 Multisim变容二极管直接调频·········································25

3.3 Multisim锁相环调频·················································27

3.4 Multisim单失谐回路鉴频·············································29

3.5 Multisim锁相环鉴频·················································31

第四章 labview中仿真实验···················································33

4.1 labview幅度调制解调················································33

4.2 labview频率调制解调················································37

第五章 ELVIS中仿真实验·····················································38

5.1 ELVIS幅度调制解调··················································38

5.2 ELVIS频率调制解调··················································42

第六章 总结与分析··························································44

致谢·······································································45

参考文献···································································45

1. 引言
   1. 研究背景
      1. EDA平台软件介绍

EDA（Electronic Design Automation）意为电子设计自动化，是在计算机辅助设计（CAD）、计算机辅助制造（CAM）、计算机辅助测试（CAT）、计算机辅助工程（CAE）的基础上综合发展而来。

以计算机为工具，设计者通过EDA软件平台，完成设计文件，进而完成编译、简化、分割、综合、优化、布局布线、仿真工作，这一切全部由计算机自动完成。可以毫不夸张地说，EDA技术大大提高了通信电子线路设计的效率，减轻了设计者的负担。目前EDA技术已经广泛应用于电子设计领域。

剩余内容已隐藏，请支付后下载全文，论文总字数：28762字