基于FPGA+DDS的MSK数字调制源设计  

Design of the Digital Modulator of MSK Based on FPGA+DDS

作　　者：李庆洪[1] 彭华东[1] 陈婷[1] 秦伟[1] 

机构地区：[1]四川压电与声光技术研究所,重庆400060

出　　处：《压电与声光》2006年第5期601-602,共2页Piezoelectrics & Acoustooptics

摘　　要：简要介绍最小频移键控(MSK)的数字调制原理、直接数字式频率合成器(DDS)的调制机理。然后提出一种基于FPGA+DDS的数字调制电路平台,详细介绍了此平台的硬件设计和软件控制流程,以及使用此方式具有调制模式多样、调制精度高、载波频率覆盖范围大、调制带宽宽、便于利用多种数字信号处理技术等优点。充分发挥DDS调制的优点和灵活性,并在此实验平台上测验其性能。The paper describes the theory of the Digital Modulator of MSK and the modulate theory of DDS, It introduces the Digital Modulator circuit mode Based on FPGA＋ DDS . It also gives the design of the hardware and the flow chart of the software control. This mode have many advantages, such as multiplicity modulation modes, high precision, wide band of frequency and modulation bandwidth. So, it＇s easy to deal with using many DDS technologies. At last, it tests the capability of this design.

关 键 词：直接数字式频率合成器(DDS) AD9852 最小频移键控(MSK) FPGA 

分 类 号：TP391.5[自动化与计算机技术—计算机应用技术]