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Study and experimentation of a 6-dB attenuation low-pass NGD circuit

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Abstract

Because of its counterintuitive nature, the Negative Group Delay (NGD) remains as an uncommon and unfamiliar electronic function. For this reason, the design and analysis of NGD circuits are not well-known for most of electronic designers. This paper initiates a basic and easy to understand theory, in addition to a design methodology for the low-pass NGD function. The circuit theory on the low-pass NGD function is described using an NGD passive topology which is constituted by a RC-parallel network with a resistive load. The NGD analysis and synthesis equations in function of NGD specifications are provided and a proof-of-concept of 6-dB low-pass NGD circuits has been designed, simulated, fabricated and tested. Frequency and time domain analyses have been performed to validate the low-pass NGD function. Theoretical and simulated results are in very good agreement and an NGD has been obtained in measurement for the proposed structure.

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Acknowledgement

This research work was supported in part by NSFC under Grant 61971230 and 61601233, and in part by Jiangsu Distinguished Professor program and Six Major Talents Summit of Jiangsu Province (2019-DZXX-022), and in part by the Postgraduate Research & Practice Innovation Program of Jiangsu Province under Grant SJKY19_0974, and in part by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) fund.

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Authors and Affiliations

  1. LE2P Lab, University of La Reunion, Saint Denis, Réunion Island, France

    Rivo Randriatsiferana & Nour M. Murad

  2. Aix-Marseille University, CNRS, University of Toulon, IM2NP UMR7334, Marseille, France

    Yajian Gan, Wenceslas Rahajandraibe & Rémy Vauché

  3. Science & Technology (NUIST), Nanjing University of Information, Nanjing, 210044, Jiangsu, China

    Fayu Wan & Blaise Ravelo

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  1. Rivo Randriatsiferana
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Correspondence to Wenceslas Rahajandraibe.

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Randriatsiferana, R., Gan, Y., Wan, F. et al. Study and experimentation of a 6-dB attenuation low-pass NGD circuit. Analog Integr Circ Sig Process 110, 105–114 (2022). https://doi.org/10.1007/s10470-021-01826-x

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