| 基于巴特沃斯逼近的二维IIR数字滤波器的设计 |
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| 引用本文： | 朱卫平. 基于巴特沃斯逼近的二维IIR数字滤波器的设计[J]. 通信学报, 1996, 17(2): 98-105 |
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| 作者姓名： | 朱卫平 |
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| 作者单位： | 南京邮电学院 |
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| 基金项目： | 国家教委留学回国人员资助 |
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| 摘 要： | 本文给出了一种基于巴特沃斯逼近的二维ＩＩＲ数字滤波器的设计方法，得到了由基本的全通节级联，并联实现的各种二维滤波器函数，包括，镜象对称互补滤波器，扇形滤波器和具有任意矩形通、阻带的滤波器，结果表明，这种实现结构具有通有灵敏度低、滤波器系数少的优点，并且由于巴特沃斯逼近的最大平坦性，得到的滤波器具有良好的相位特性。
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| 关 键 词： | 数字滤波器 巴特沃斯逼近 IIR滤波器 设计 |
Design of 2-D IIR Digital Filters Based on Butterworth Approximation |
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| Zhu Weiping. Design of 2-D IIR Digital Filters Based on Butterworth Approximation[J]. Journal on Communications, 1996, 17(2): 98-105 |
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| Authors: | Zhu Weiping |
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| Abstract: | A Butterworth approximation based method for the design of 2-D IIR digital filters is presented,yielding the various 2-D filter functions implemented by a cascade-parallel connection of component all-pass sections.These filters include the quadrature-mirror complementary filters,2-D fan filters and those with arbitrarily rectangular pass-band and stop-band regions.It is shown that this realization structure enjoys low pass-band sensitivity and fewer filter coefficients.Furthermore,the resulting 2-D filters possess good phase reponse characteristics due to the maximal flatness of Butterworth approximation. |
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| Keywords: | filter design Butterworth approximation 2-D IIR filters |
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