复杂全通网络的等纹相位设计

Jong-Jy Shyu, S. Pei
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引用次数: 0

摘要

本文提出了一种设计复全通IIR滤波器的新方法,即复系数全通IIR滤波器。通过最小化某平方相位误差在感兴趣频率上的积分,计算一个合适的实对称正定矩阵的特征向量,从而得到滤波器系数。稳定性是通过适当指定所需的相位规格来实现的。如果采用适当的迭代处理,可以得到等纹复全通滤波器设计。该方法简单,性能与现有方法相当。通过实例验证了该方法的有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Equiripple phase design of complex all-pass networks
A new method is proposed for designing complex all-pass IIR filters, the all-pass IIR filters with complex coefficients, in this paper. By minimizing the integration of certain square phase error over interested frequencies, an eigenvector of an appropriate real, symmetric and positive-definite matrix is computed to get the filter coefficients. The stability is achieved by specifying properly the desired phase specifications. If an appropriate iterative process is used, equiripple complex all-pass filter design can be obtained. The method is simple and the performance is comparable to the existing methods. Several examples are presented to demonstrate the effectiveness of the approach.
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