基于dds的幅度调制am信号发生器设计正式毕业设计.docVIP

基于DDS的幅度调制AM信号发生器设计 摘 要 信号发生器发展到今天，在电子测试、电子设计、模拟仿真中，扮演着一个重要的角色，极大加快了电子测试与设计工作中的效率，在电子技术和信号仿真应用中已发挥了巨大的作用THE DESIGN OF THE AM SIGNAL GENERATOR BASED ON DDS The Amplitude Modulation ABSTRACT The development of the signal generator today, plays a very important role in the electronic testing, design, simulation, and communications projects. It widely spread the application, speed up the electronic test; also it plays a huge role in the electronic technology and the application of the signal simulation. This article mainly introduced the situation of the design which based on the DDS signal generator. This is a system which based on MATLAB in order to realize the signal generation. This system is simple and flexible, the anti-jamming ability is strong, the frequency is high, and the application is wide. In order to realize the digital modulating wave based on the DDS, we proposed the adjusted indexes control word and the frequency control word, through the table look-up we can find the thought and the method of the digital sequence. The MATLAB simulation and the prototypical experiment indicated this method is effective. Through the analysis which based on the time domain and the frequency range convolution theorem of the signal modulation, and the simulation on MATLAB software which is convenient and accurate, we can get a quite satisfactory result. The process of the simulation and the experiment of the theory can commonly stimulate the students studying interest and the comprehensive advancement for all-around development, the innovation education. After the debugging of the software, all kinds of profile can realize according to the request. Because of the short time and some other reasons, this design is only the principle, we still have many work need to do in order to achieve the practical use. In other words, Because of shortage experience, there is many deficiencies in the design, It also needs some further improve. KEY WORDS：DSP Buil