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2009•Journal of Nanjing University of Information Science & TechnologyRequires access

Modified explicit formulas for optimal LC prototype filter design

Jianfu Teng

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Abstract

The modified explicit formulas for Chebyshev and Butterworth LC low-pass filter design are given in this paper.These formulas fully utilize the passband tolerance obtained by rounding off the order and reduce the passband ripple without any change of the filter order,greatly facilitating the realization of the integrated filter.A design example for integrated active high-pass filters is presented and the effectiveness of the above-mentioned modified explicit formulas is verified.

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What this paper is about

The modified explicit formulas for Chebyshev and Butterworth LC low-pass filter design are given in this paper.These formulas fully utilize the passband tolerance obtained by rounding off the order and reduce the passband ripple without any change of the filter order,greatly facilitating the realization of the integrated filter.A design example for integrated active high-pass filters is presented and the effectiveness of the above-mentioned modified explicit formulas is verified.

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Available abstract

The modified explicit formulas for Chebyshev and Butterworth LC low-pass filter design are given in this paper.These formulas fully utilize the passband tolerance obtained by rounding off the order and reduce the passband ripple without any change of the filter order,greatly facilitating the realization of the integrated filter.A design example for integrated active high-pass filters is presented and the effectiveness of the above-mentioned modified explicit formulas is verified.

Key concepts: Chebyshev filter, Butterworth filter, Passband, Rounding, Network synthesis filters, Prototype filter, Filter design, Ripple

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