频率可配置数字陷波器及其在FPGA中的实现

Digital Notch Filter with Configurable Frequency and its Implementation on FPGA

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.