Gain-phase relations for minimum-phase discrete-time networks
作者:
S.S.Haykin,
期刊:
Proceedings of the Institution of Electrical Engineers
(IET Available online 1972)
卷期:
Volume 119,
issue 12
页码: 1687-1691
年代: 1972
DOI:10.1049/piee.1972.0337
出版商: IEE
数据来源: IET
摘要:
A linear discrete-time network (e.g. a digital filter) of the minimum-phase type is characterised by having a transfer function with poles and zeros all located outside the unit circle in the z−1plane. In the paper, the Cauchy integral formula is applied to this transfer function for values of z−1on the unit circle, and various sets of gain-phase relations are thereby obtained for the network. It is also shown that, when the sampling period approaches zero, these relations reduce to the well known gain-phase relations of a linear continuous-time network of the minimum-phase type.
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