摘要
该文对频率可配置数字陷波器及其在FPGA中的实现技术进行了研究。文中介绍了陷波器在s平面域上的传递函数及其频率响应特性,推导出了频率可配置数字陷波器在z平面上的传递函数和线性差分方程表达式,讨论了阻尼系数对陷波器性能的影响;设计了数字陷波器在FPGA上详细实现方案,并给出了FPGA开发平台下的测试结果。论文结果对相关研发工作具有参考价值。
In this paper,implementation technique of digital notch filter with configurable frequency on FPGA isstudied.The transfer function on s plane domain of notch filter and its frequency response characteristic isintroduced,its transfer function on z plane domain and its linear differential equation expression is also derived.The influence of damping coefficient on the performance of notch filter is discussed.Digital notch filter's FPGAimplementing methods are introduced in details and test results on FPGA developing platform are shown.Itsresults have conference value to the related development projects.
作者
成华强
蒋国庆
Cheng Hua-qiang;Jiang Guo-qing(The 41st Research Institute of CETC,Shandong Qingdao266555;China Electronics Technology Instruments Co.,Ltd,Shandong Qingdao 266555)
出处
《电子质量》
2018年第8期22-25,共4页
Electronics Quality
关键词
频率可配置陷波器
s平面与z平面间的变换
IIR滤波器
FPGA实现
Digital Notch Filter with Configurable Frequency
Tranformation Between s Plane and z Plane
IIRFilter
FPGA Implemention