太赫兹科学与电子信息学报, 2015, 13 (3): 520, 网络出版: 2015-11-30
基于FPGA 的DDS 双相信号发生器设计
Design of DDS dual signal generator based on FPGA
直接数字频率合成 现场可编程门阵列 信号发生器 Verilog HDL 语言 Direct Digital frequency Synthesis Field Programmable Gate Array signal generator Verilog HDL
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。
Abstract
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 THS5615A 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.
崔智军, 张瑜. 基于FPGA 的DDS 双相信号发生器设计[J]. 太赫兹科学与电子信息学报, 2015, 13(3): 520. CUI Zhijun, ZHANG Yu. Design of DDS dual signal generator based on FPGA[J]. Journal of terahertz science and electronic information technology, 2015, 13(3): 520.
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