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2006•Unpublished venueRequires access

One method for linear phase lowpass IIR filter design

A. Fernandez-Vazquez, Gordana Jovanović Doleček

Open publisher page 3 citations

Abstract

This paper presents a new method for the design of exactly linear phase lowpass HR filters. The parameters of the design are: passband and stopband frequencies /spl omega//sub p/ and /spl omega//sub s/, the passband droop A/sub p/ and the stopband attenuation A/sub s/. These parameters are the same as the parameters used in the traditional IIR filter design based on analog filters. The designed IIR filter has a flat magnitude response. The proposed method is based on complex allpass filters.

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What this paper is about

This paper presents a new method for the design of exactly linear phase lowpass HR filters. The parameters of the design are: passband and stopband frequencies /spl omega//sub p/ and /spl omega//sub s/, the passband droop A/sub p/ and the stopband attenuation A/sub s/. These parameters are the same as the parameters used in the traditional IIR filter design based on analog filters. The designed IIR filter has a flat magnitude response. The proposed method is based on complex allpass filters.

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Available abstract

This paper presents a new method for the design of exactly linear phase lowpass HR filters. The parameters of the design are: passband and stopband frequencies /spl omega//sub p/ and /spl omega//sub s/, the passband droop A/sub p/ and the stopband attenuation A/sub s/. These parameters are the same as the parameters used in the traditional IIR filter design based on analog filters. The designed IIR filter has a flat magnitude response. The proposed method is based on complex allpass filters.

Key concepts: Stopband, Passband, All-pass filter, Infinite impulse response, Elliptic filter, Prototype filter, Low-pass filter, Linear phase

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