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Towards the realization of fractional step filters | IEEE Conference Publication | IEEE Xplore

Towards the realization of fractional step filters


Abstract:

In this paper we propose a fractional lowpass transfer function of the order (n + α) where n is an integer and 0 <; α <; 1. We show how this filter can be designed using ...Show More

Abstract:

In this paper we propose a fractional lowpass transfer function of the order (n + α) where n is an integer and 0 <; α <; 1. We show how this filter can be designed using an integer-order transfer function approximation of the fractional-order Laplacian operator sα. A 1st order lowpass filter with fractional steps from 0.1 to 0.9, that is of order 1.1 to 1.9 is given as an example with its characteristics compared to 1st and 2nd order Butterworth filters. PSPICE simulations and experimental results of a prototype filter verify the operation of the fractional step filter.
Date of Conference: 30 May 2010 - 02 June 2010
Date Added to IEEE Xplore: 03 August 2010
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Conference Location: Paris, France

References

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