会议专题

Design of Sinusoidal Signal Generator Based on DDS Technology

this paper designs a sinusoidal signal generator applying a high level of integrated chip AD9851 based on the principle of Direct Digital Frequency Sviithesis(DDS). Through parallel communications between STC89C52 microcontroller and AD9851, corresponding frequency-phase control words are written to the AD98S1 chip. In this paper, a 15MHz frequency, 45° epoch angle sine wave is taken for example. Detailed analysis of the realization process of the sine wave is presented. A Low-pass filter is used to reduce the interference of the high-frequency signals, thus a small distortion sine wave is obtained. The signal is connected to 1012 load after power amplification. The effective value of output voltage is 7.2V; the output power is 5W. The circuit structure is simple and easy to control.

DDS AD9851 STC89C52 signal generator

Bai Zhan Yan Yang Guo Yiheng Feng Xin Yu Yuechuan

School of Electrical Engineering, Wuhan University Wuhan, P. R. China, 430072

国际会议

2012 International Conference on Electric Technology and Civil Engineering(2012 电子技术与土木工程国际会议 ICETCE 2012)

三峡

英文

1475-1478

2012-05-18(万方平台首次上网日期,不代表论文的发表时间)