基于SOPC的任意波形发生器设计

基于SOPC技术的任意波形发生器设计。该任意波形发生器采用了FPGA＋USB通信芯片的硬件构架,具有即插即用的特性,能实现两路可调相位差的任意波形输出,波形频率分辨率达到0.1Hz。另外还可以通过PC端软件编辑任意波形数据,用USB接口下载到SOPC系统上用于产生任意波形,设计中对DDS的结构进行了改进,使其可以在波形切换时实现平滑输出。

Design of Arb ItraryWaveform Genera tor Ba Sed on SOPC

A arbitrary waveform generator （AWG） based on SOPC technology was introduced in this paper. In the design, FPGA ＋ USB communications chip were used in AWG.. The designed generator has the function of plug and play, it can implement two channels of arbitrary output waveform whose phase-difference was adjustable. The AWG ps frequency resolution reached 0.1 Hz. In addition ,it can edit arbitrary waveform data through PC software, download to SOPC systems to generate arbitrary waveform with USB interface. Structure of DDS was improved to keep output smooth at the time of the waveform chaneJne data.