【摘要】 文章介绍了基于FPGA和数字频率合成技术,利用VHDL编制程序并下载至Xilinx公司的SpartanⅡ系列XC2S100E-6PQ208FPAG芯片上,加以简单的外围电路,构成了高精度数字式移相正弦波信号发生器。该装置能够产生频率、相位、幅度均可数字式预置并可调节的两路正弦波信号,相位差范围为0～359°,步进为1°。更多还原

【Abstract】 This paper present an approach of designing an exact and digital phase shifting low frequency sine wave generator based on FPGA and DDS technology. VHDL can be programmed , then be download to a SpartanⅡseries chip XC2S100e-6PQ208, Which is made by Xilinx Co. Ltd. This device is composed of only one FPGA chip and simple periphery circuit ,then can generate two sin waves with preconcerted and adjusted frequency , phase difference and amplitude.The range of phase difference has achieved 0～359°,step up 1°.更多还原