摘要
以 FPGA 为主要硬件,采用直接数字频率合成技术结合嵌入式锁相环,开发出了一种具有数字调制功能的 FM 信号发生器,并在自行研制的 ALTERA Cyclone 实验板上得到实现.经调试,该信号发生器的频率分辨率为0.596 HZ,最高输出载波频率达到10 MHz,同时具有输出相位连续,抗干扰能力强等优点.
A FM signal generator with digital modulation function is presented. It uses Field Programmable Gate Array (FPGA) as its main hardware and Direct Digital Frequency Synthesizer (DDS) technique combined with embedded Phase-lockod Loop (PLL). This design was implement in an AItam Cyclone breadboard. Through being debugged, its frequency resolution is 0. 596 Hz and the maximum output frequency is 10 MHz. Meanwhile, it has a continuous output phase and a high noise immunity.
出处
《南开大学学报(自然科学版)》
CAS
CSCD
北大核心
2007年第6期95-99,共5页
Acta Scientiarum Naturalium Universitatis Nankaiensis
基金
天津市自然科学基金(06YFJMJC00600)
天津市应用基础及前沿技术研究计划重点项目(07JCZDJC5700)