| 用双线性变换法设计IIR滤波器 |
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| 引用本文： | 沈慧钧,罗霄华,王思伟.用双线性变换法设计IIR滤波器[J].山西电子技术,2008(6). |
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| 作者姓名： | 沈慧钧 罗霄华 王思伟 |
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| 作者单位： | [1]太原理工大学信息工程学院,山西太原030024 [2]广东工业大学自动化学院,广东广州510640 |
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| 摘 要： | 给出了用双线性变换法设计IIR数字滤波器的方法，并通过用MATLAB语言来实现。双线性法可以使系统经变换后仍保持原有特性，而且这种方法是S域和Z域的单值一一对应，克服了频率交叠产生的混叠效应；最后使用MATLAB语言实现了满足要求的低通IIR滤波器，从而证明了椭圆滤波器具有最优特性。
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| 关 键 词： | 双线性变换法 IIR滤波器 MATLAB |
Design of IIR Filters with the Means of Bilinear Transform |
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| Shen Hui-jun Luo Xiao-hua Wang Si-wei.Design of IIR Filters with the Means of Bilinear Transform[J].Shanxi Electronic Technology,2008(6). |
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| Authors: | Shen Hui-jun Luo Xiao-hua Wang Si-wei |
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| Affiliation: | Shen Hui-jun1 Luo Xiao-hua1 Wang Si-wei2(1.College of Information Engineering,Taiyuan University of Technology,Taiyuan Shanxi 030024,China,2.Automatic College,Guangdong University of Technlogy,Guangzhou Guangdong 510640,China) |
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| Abstract: | The paper mainly introduces how to design low-pass IIR filters by the means of bilinear transform and how to use MATLAB to realize them.The bilinear transform method is selected,because it may hold the original characteristics after the transformation.And the Z field is correspondence with the S field,so that it can overcome the frequency aliasing.MATLAB language is used to realize low pass IIR filters to meet the design demands.The results show that the ellipse filter has the best function. |
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| Keywords: | bilinear transform IIR filters MATLAB |
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