基于FPGA数字移相信号发生器设计

Design of Digital Phase Shift Signal Generator Based on FPGA

根据直接数字合成器的基本原理,给出了基于FPGA的直接数字合成器的设计与实现,利用FPGA有效地扩展了输出波形的频率范围,实现了数字移相信号发生器。该信号发生器主要采用了直接数字合成器、直接存储器存取、数字移相和数字调幅等技术,对传统的模拟移相不能实现任意波形的移相的缺点方便进行了改进和优化。

According to the basic principles of Direct Digital Synthesizer, this article put forward Design and Implementation of the Direct Digital Synthesizer based on FPGA, and extend the output waveform of the frequency range with FPGA effectively. The signal generator used mainly technologies of direct digital synthesizer, a direct memory access, digital phase-shifting and digital AM. It improve and optimise the traditional analog phase-shifting arbitrary waveforms which can not be realized the shortcomings of the phaseshifting facilitate.