A Polyphase Transfer Function Design Based on Frequency Transformation from Prototype LPF

Cosy MUTO

doi:10.1093/ietfec/e91-a.2.554

IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences

Online ISSN : 1745-1337
Print ISSN : 0916-8508

Special Section on Analog Circuit Techniques and Related Topics

A Polyphase Transfer Function Design Based on Frequency Transformation from Prototype LPF

Cosy MUTO

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Keywords: polyphase filter, complex filter, frequency transformation, Zolotarev approximation

JOURNAL RESTRICTED ACCESS

2008 Volume E91.A Issue 2 Pages 554-556

DOI https://doi.org/10.1093/ietfec/e91-a.2.554

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Abstract

In this paper, a frequency transformation for designing polyphase transfer functions is proposed. A modification to the bilinear LP-LP transformation, which assigns both stopband edges on negative frequency range whereas passband edges are on positive one, results polyphase transfer functions. Design examples show validity of the proposed method.

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