| 一种设计IIR数字滤波器的参数化方法 |
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| 引用本文： | 徐红,李刚,黄朝耿,叶丰.一种设计IIR数字滤波器的参数化方法[J].电子学报,2012,40(4):847-851. |
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| 作者姓名： | 徐红 李刚 黄朝耿 叶丰 |
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| 作者单位： | 1. 浙江工业大学信息工程学院,浙江杭州,310023
2. 杭州国芯科技股份有限公司,浙江杭州,310012 |
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| 摘 要： | 基于连续时间状态空间结构和广义双线性变换,提出了一种设计无限冲激响应(IIR)数字滤波器的参数化方法.优点是稳定区域包含了整个参数空间,因此可以采用无约束优化方法.给出了仿真实例,并与已有的设计方法进行了比较,其通带波动、阻带衰减、群迟延等性能更为优越.
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| 关 键 词： | IIR数字滤波器设计 状态空间实现 广义双线性变换 参数化 |
| 收稿时间： | 2010-04-24 |
A Parametric Approach to IIR Digital Filter Design |
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| XU Hong
,
LI Gang
,
HUANG Chao-geng
,
YE Feng.A Parametric Approach to IIR Digital Filter Design[J].Acta Electronica Sinica,2012,40(4):847-851. |
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| Authors: | XU Hong LI Gang HUANG Chao-geng YE Feng |
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| Affiliation: | 1.College of Information Engineering,Zhejiang University of Technology,Hangzhou,Zhejiang 310023,China;2.Hangzhou Nationalchip Science&Technology Co.Ltd.,Hangzhou,Zhejiang 310012,China) |
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| Abstract: | Based on a continuous-time state-space structure and the generalized bilinear transformation(GBT),a parameterization for IIR digital filter design is proposed.The cost function can be minimized without stability monitoring because the corresponding stability region is the entire parameter space.Simulation shows that the performance of the filters obtained with the proposed approach is better than that of those designed with an existing one in terms of passband ripple,stopband attenuation and group delay. |
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| Keywords: | infinite impulse response(IIR) digital filter design state-space realization GBT parameterization |
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