现代信息科技2025，Vol.9Issue(12)：32-35,40,5.DOI:10.19850/j.cnki.2096-4706.2025.12.007
基于FPGA的DDS快速跳频参考源设计
Design of the DDS Fast Frequency Hopping Reference Source Based on FPGA
王蒙 1刘芹 1赵磊1
作者信息
- 1. 中电科思仪科技股份有限公司,山东 青岛 266555||山东省电子测量仪器技术创新中心,山东 青岛 266555
- 折叠
摘要
Abstract
This paper proposes a design scheme of DDS fast frequency hopping reference source based on FPGA.A reference source is designed with a high-stability Oven-Controlled Crystal Oscillator(OCXO),a small integrated PLL chip LMX2572,and a high-performance DDS chip AD9956 as the core,and the DDS reference source is used to drive a high-frequency broadband frequency synthesizer based on a PLL.The principle of the DDS reference source is introduced,and the generation of a reference signal with a frequency range of 50～100 MHz,a frequency resolution less than 0.005 Hz,a frequency switching time shorter than 60 ns,and a single-sideband phase noise less than-120 dBc/Hz@1 kHz is achieved.The DDS reference source designed by this scheme not only has the advantages of high frequency resolution,low phase noise,small size,and low power consumption,but also can perform fast frequency hopping in three modes including single-tone,no-dwell linear sweep,and linear sweep.关键词
锁相环/FPGA/快速频率跳变/DDSKey words
PLL/FPGA/fast frequency hopping/DDS分类
计算机与自动化引用本文复制引用
王蒙,刘芹,赵磊..基于FPGA的DDS快速跳频参考源设计[J].现代信息科技,2025,9(12):32-35,40,5.
