基于FPGA的宽带信号产生和频率测量电路Wideband signal generation and frequency measurement circuits based on FPGA
王丽娜,杨绪森,许冉,徐伟,吴静,石晨鸣
摘要(Abstract)：
设计基于FPGA的高频信号产生和频率测量电路。系统以FPGA为核心,辅以高速D/A、无源滤波、自动增益控制AGC等模块构成。利用FPGA对标准信号波形进行存储,结合DDS技术,通过高速D/A和无源滤波实现信号的产生。FPGA的计数器、闸门等实体电路实现了等精度测频。利用NIOS实现人机交互功能。实验测试表明,系统输出的三角波、正弦波、方波具有频带宽、频率稳定的特点,测频的相对误差达到10-6。
关键词(KeyWords)： FPGA;模拟电路;等精度测频;波形产生;DDS原理;NIOS
基金项目(Foundation): 国家自然科学基金项目(41605121);; 江苏高校品牌专业建设工程资助项目;; 江苏高校“信息与通信工程”优势学科Ⅱ期建设工程资助项目~~
作者(Author): 王丽娜,杨绪森,许冉,徐伟,吴静,石晨鸣
DOI: 10.16652/j.issn.1004-373x.2018.17.023
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