| 广义Chebyshev滤波器的边带优化设计 |
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| 引用本文： | 朱永忠,刘建平.广义Chebyshev滤波器的边带优化设计[J].西南交通大学学报,2011(5):797-802. |
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| 作者姓名： | 朱永忠 刘建平 |
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| 作者单位： | 武警工程学院通信工程系; |
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| 基金项目： | 武器装备预研基金资助项目(9140A24050407DZ01) |
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| 摘 要： | 为获得小型化、高性能的滤波器,在分析传输零点对滤波器选择性影响的基础上,提出了一种阶数最小、边带选择性最大的广义Chebyshev滤波器设计方法.通过利用传输零点与带外等波纹峰值频率的关系,实现了广义Chebyshev函数传输零点的精确设计.以矩形三腔滤波器的优化为例,在满足设计指标的基础上,实现了该滤波器最大选择性的设计,实测传输零点为850.200 MHz,带外等波纹峰值频率为824 MHz,与传统设计相比,缩短了过渡带,提高了滤波器的选择性.实例结果表明,该设计方法能有效改善滤波器的性能.
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| 关 键 词： | 传输零点 广义Chebyshev滤波器 交叉耦合 边带特性 |
Optimization Design of Band-Edge Selectivity for General Chebyshev Filter |
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| ZHU Yongzhong,LIU Jianping.Optimization Design of Band-Edge Selectivity for General Chebyshev Filter[J].Journal of Southwest Jiaotong University,2011(5):797-802. |
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| Authors: | ZHU Yongzhong LIU Jianping |
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| Institution: | ZHU Yongzhong,LIU Jianping(Department of Communication Engineering,ENGG College of the Chinese People Armed Police Force,Xi'an 710086,China) |
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| Abstract: | In order to get miniaturized high-performance filters,based on analyzing the impact of transmission zeros on the selectivity of a filter a new design method was proposed for maximizing the band-edge selectivity of general Chebyshev filters with a minimum filter order.Based on maximizing the band-edge selectivity,the transmission zero of a general Chebyshev filter was obtained accurately from the relationship between the transmission zeros and the frequencies of magnitude characteristic extreme values.A rect... |
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| Keywords: | transmission zero general Chebyshev filter cross-coupling band-edge selectivity |
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