| 低灵敏度数字LDD梯形高通滤波器的设计 |
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| 引用本文： | 浦宗美.低灵敏度数字LDD梯形高通滤波器的设计[J].南京邮电大学学报(自然科学版),1990(1). |
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| 作者姓名： | 浦宗美 |
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| 作者单位： | 南京邮电学院电信工程系 |
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| 摘 要： | 本文利用数字梯形滤波器的设计原理,以离散微分器作为积木块,利用频率变换方法,设计出数字LDD梯形高通滤波器。这种滤波器是对两端接载的无耗LC梯形滤波器进行模拟,所以是低灵敏度的,同时具有所希望的双线性变换和等波动的频率响应。本文以一个三阶等波动LDD梯形高通滤波器为例说明具体的设计过程,并对该滤波器进行计算机模拟。
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| 关 键 词： | 高通滤波器 数字滤波器 无耗离散积分器 |
Design of Digital LDD Ladder High-Pass Filter with Low Sensitivity |
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| Pu Zongmei.Design of Digital LDD Ladder High-Pass Filter with Low Sensitivity[J].Journal of Nanjing University of Posts and Telecommunications,1990(1). |
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| Authors: | Pu Zongmei |
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| Institution: | Department of Telecommunication Engineering |
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| Abstract: | Based on the design fundamental of digital LDI ladder filter, a digital LDD ladder high-pass filter is designed by using the frequency transformation in this paper. This digital filter uses the lossless discrete differentiator(LDD) as a building block, and simulates a doubly terminated lossles LC ladder filter, therefore it has low sensitivity. This digital filter possesses the desired frequency characteristic of bilinear transformation and equal magnitude response. An example of the design procedure of the third order digital LDD ladder high-pass filter with equal magnitude response is detailed. A computer simulation of the example is given. |
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| Keywords: | High-pass filter Digital filter Lossless discrete integrator |
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