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Design and Analysis of Ultra Narrow-Band Filter in FPGA
Author(s): 
Pages: 296-300
Year: Issue:  4
Journal: Radar Science and Technology

Keyword:  窄带滤波器插值FIR滤波器IP核CIC滤波器;
Abstract: 高性能极窄带滤波器是多普勒体制雷达接收机的关键功能模块.滤波器的设计除要求极窄的过渡带外,还需具备极大的镜频抑制比以及极小的带内失真.针对单速率以及包含抽取的多速率极窄带滤波器设计要求,分别提出了基于插值FIR滤波器的优化参数以及级联积分梳状(CIC)滤波器的性能曲线.在FPGA实现中进行了资源对比,采用文中给出的极窄带滤波器设计优化方法可达到最佳的资源性能比.最后基于滤波器IP核设计了高性能极窄带滤波器模块,具备很强的工程应用价值.
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