基于AD9833的一种超声波信号发生器.pdf

31 4 () Vol31 No.4 2010 08 Journal of hangchun University of Techonology(Natural Science Edition) Aug2010 AD9833 1 2 于 颖 , 李 林 ( 1. , 130022; 2. , 130012) : 介绍了采用DDS 技术的AD9833 芯片, 并应用该芯片设计了一种高精度可编程的超 声波信号发生器 论了DDS 技术的基本原理及性能特点, 并对实验结果进行了分析 : DDS 技术; AD9833; 超声波 : TP274. 53 : A :2010) A signal simulator of ult rasonic wave based on AD9833 1 2 YU Ying , LI Lin ( 1. Aviation Information Jamming, Department of Air Force Aviation University, hangchun 130022, hina; 2. M achinery Science and Engineering, Department of Jilin University, hangchun 130012, hina) Abstract: With AD9833 chip which is based on DDS technique, we design a high accuracy programmable ultrasonicwave signal simulator. The basic principle and performance character of DDS technique are discussed, and the experimental results are analyzed. Key words: DDS technology; AD9833; ultrasonic wave. 0 1 DDS , ( Direct Digital Fre , quency Synthesis, DDS) , , / , DDS 1. 1 DDS DDS 1 : : ( 1978- ) , , , , , , , Email: 139. com. 438 () 31 1 DDS f c , 10 MSOP , [ 2] 2 , FSW 2