电子科技 ›› 2020, Vol. 33 ›› Issue (1): 1-5.doi: 10.16180/j.cnki.issn1007-7820.2020.01.001

• •    下一篇

基于AD9910的周界入侵探测系统信号源设计

赵能武,路宏敏,徐桃,胡宽,何川侠,孟晓姣   

  1. 西安电子科技大学 电子工程学院,陕西 西安 710071
  • 收稿日期:2018-12-23 出版日期:2020-01-15 发布日期:2020-03-12
  • 作者简介:赵能武(1993- ),男,硕士研究生。研究方向:模拟数字电路设计、射频微波电路设计等。|路宏敏(1961-),男,博士,教授,博士生导师。研究方向:电磁兼容理论与应用,电磁场与微波技术。
  • 基金资助:
    国家自然科学基金(31870841)

Design of Signal Source for Perimeter Intrusion Detection System Based on AD9910

ZHAO Nengwu,LU Hongmin,XU Tao,HU Kuan,HE Chuanxia,MENG Xiaojiao   

  1. School of Electronic Engineering,Xidian University,Xi’an710071,China
  • Received:2018-12-23 Online:2020-01-15 Published:2020-03-12
  • Supported by:
    National Natural Science Foundation of China(31870841)

摘要:

文中以AD9910芯片作为信号源频率合成核心,以FPGA作为控制核心,采用软硬件相结合的方法设计了两种具有不同特点的信号源,获得了周界入侵探测系统所需的中心频率在40~200 MHz、幅值可调的单载频脉冲及其载波的产生和输出。经过对系统的最终测试和实验数据分析表明,系统稳定性好、输出信号杂散小于-50 dBc、载波相位噪声小于-60 dBc/Hz@10 kHz。

关键词: 信号源设计, AD9910, 周界入侵探测系统, 漏泄同轴电缆, FPGA, DDS

Abstract:

Using AD9910 chip as the core of signal source frequency synthesizer and FPGA as the controller, two signal sources with their respective advantages were designed by combining hardware and software. In this way, the acquisition and output of a single carrier frequency pulse with a center frequency of 40~200 MHz and adjustable amplitude required by the perimeter intrusion detection system and its carrier were obtained. After the final test of the system, experimental data showed that the system had good stability. The spur of output signal was lower than -50 dBc, and the phase noise of the carrier was better than -60 dBc/Hz@10 kHz.

Key words: signal source design, AD9910, perimeter intrusion detection system, leaky coaxial cable, FPGA, DDS

中图分类号: 

  • TN741