摘要
Abstract
This paper present an approach of designing a digital phase shifting sine wave generator based on FPGA technology with VHDL and the simple periphery circuit. The generator is a frequency and phase controllable sine signal generator using DDS with FPGA chip and DA converter. The paper also show the work principle of DDS, circuit structure ,and the idea of designing and realizing method. The digital phase shifting sine wave generator can generate two sine waves with preconcerted and adjusted frequency and phase difference. The frequency is from 20Hz to 20kHz,and the range of phase difference has achieved 0-359° step up 1 °.关键词
数控移相/直接数字频率合成/现场可编程门阵列/正弦波信号发生器Key words
Digital/Phase Shifting/DDS/FPGA/Signal Generator分类
信息技术与安全科学
