基于Verilog的多路相干DDS信号源设计

The Design of Multiple Coherent DDS Signal Source Based on Verilog

传统的多路同步信号源常采用单片机搭载多片专用DDS芯片配合实现。该技术实现复杂,且在要求各路同步相干可控时难以实现。本文在介绍了DDS原理的基础上,给出了用Verilog_HDl语言实现相干多路DDS的工作原理、设计思路、电路结构。利用Modelsim仿真验证了该设计的正确性,本设计具有调相方便,相位连续,频率稳定度高等优点。

The traditional multi-way synchronization signal source is often realized by microcontroller which equipped with multi-chip dedicated DDS chip. This paper introduces the principle of DDS,puts forward the working principle,design idea and circuit structure to realize the multiple coherent DDS with the language Verilog_HDL. This design is simulated by Modelsim and it has the advantages of convenient phase modulation,continuous phase,high stability frequency and etc.