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1、WORD格式可编辑摘要信号发生器是一种能产生多个函数信号的的仪器，常见的有正弦波、方波、三角波等。在电子技术飞速发展的今天，信号发生器作为各种信号源无论在实验室还是在设备检测中已经具有十分广泛的用途。传统的信号发生器大多是基于模拟电子技术设计制作的，这种信号源制作简单，成本低廉，但是它的缺点也很多，比如不便于存储，频率稳定度差，失真度高等。DDS是以全数字技术，从相位概念出发直接合成所需波形的一种新的合成原理。本设计采用DDS和单片机技术相结合，以STM32F103RBT6芯片及AD9834为核心设计了一种幅度、
2、相位、频率都可调节的信号发生器，它不仅能克服传统的正弦波信号发生器的缺点，而且由模拟乘法器产生调幅电路、采用数字键控的方法实现二进制PSK、ASK信号，且频带较宽、频率稳定度高，波形良好。该信号发生器具有更强的市场竞争力，在跳频技术、无线电通信技术方面具有比较广阔的发展前景。关键字：信号发生器，STM32F103RBT6，DDS，AD9834专业知识分享WORD格式可编辑ABSTRACTSignalgeneratorcangeneratemultiplefunctionsisasignaloftheinstrum
3、ent,commonhaveasinewave,squarewave,trianglewave,etc.Intoday'srapiddevelopmentofelectronictechnology,signalgeneratorasavarietyofsignalsourceinthelaboratoryorintheequipmenttestinghasaverywiderangeofUSES.Most of the traditional sine wave signal generator is desi
4、gned based on analog electronic technology, this is simple and low cost production source, but it has many shortcomings, such as it is not easy to store,its frequency stability is poor, high distortion and so on. DDS is a new synthetic principle which based o
5、n the all-digital technology, starting from the concept of phase direct synthesis of waveforms required.This design uses DDS and microcontroller technology, the AD9850 DDS chip to the core ,design a sine wave signal generator,whose magnitude, phase, frequency
6、 can be regulated.It’s not only can overcome the traditional shortcomings of the sine wave signal generator, and the amplitude circuit is produced by the analog multiplier , the digital keying is used to achieve binary PSK, ASK signal, and it has wide band,
7、high frequency stability, wave good. The signal generator has a stronger market competitiveness, in the frequency hopping, radio communication technology has relatively broad prospects for development.Keywords:signalgenerator,STM32F103RBT6,DDS,AD9834专业知识分享WOR
8、D格式可编辑目录第1章引言11.1选题背景11.2研究目标和意义21.3研究思路2第2章方案论证32.1主控制器32.2信号发生源42.3系统稳压模块52.4DDS稳压模块52.5频率控制模块52.6串口模块62.7显示模块6第3章硬件模块详解83.1STM32F103RBT6简介83.1.1综述83.1.2结构概览83.1.3特性93.1.4芯片引脚排列说明103.2信
