摘要
直接数字频率合成(DDS)广泛应用于电信与电子仪器领域,是实现设备全数字化的关键技术。基于Altera的现场可编程门阵列(FPGA)核心板DE0-Nano,结合高性能的THS5615A数模转换芯片,完成了DDS的硬件设计与实现。实测结果表明,对于频率范围在0.1 Hz^7.3 MHz的正弦信号,输出信号的频率精确度优于0.5%,移相范围0°~360°,移相误差约为0.5°,且相位以1°任意步进,具有电路简单,输出波形调整灵活以及性价比高等特点。
Direct Digital frequency Synthesis(DDS) is widely used in the field of telecommunication and electronic equipment, which is the key technique to achieve all-digital equipment. The design and implementation of DDS hardware is completed by adopting Altera DE0-Nano Field Programmable Gate Array(FPGA) core-board combining with high-performance THS5615 A Digital to Analog Converter(DAC). The measured results show that,for the frequency range from 0.1 Hz to 7.3 MHz,the frequency accuracy of output signal is better than 0.5%,and the phase shift range is from 0° to 360°,with a phase-shift error within 0.5°,and the phase at any step by 1°. The design bears such advantages as a simple circuit,flexible adjustment of the output waveform, as well as a high performance-price ratio.
出处
《太赫兹科学与电子信息学报》
2015年第3期520-524,共5页
Journal of Terahertz Science and Electronic Information Technology
基金
国家自然科学基金资助项目(面上项目
重点项目
重大项目)
国家教育部博士点基金资助项目
