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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2021-02-26
Study of Active Negative Group Delay Circuit Based on LNA and RLC-Parallel Network
By
Dan Chen,

    Dr. Dan Chen

    State Key Laboratory of Nuclear Power Safety Monitoring Technology and Equipment

    China

    Homepage

Taochen Gu,

    Dr. Taochen Gu

    Nanjing University of Information Science & Technology (NUIST)

    China

    Homepage

Xiang Zhou,

    Dr. Xiang Zhou

    School of Mechanical Engineer

    Southeast University

    China

    Homepage

Fayu Wan,

    Professor Fayu Wan

    College of Electronics and Information Engineering

    Nanjing University of Information Science and Technology

    China

    Homepage

Blaise Ravelo

    Prof. Blaise Ravelo

    School of Electronic & Information Engineering

    Nanjing University of Information Science & Technology (NUIST)

    China

    Homepage

Progress In Electromagnetics Research Letters, Vol. 96, 137-145, 2021
doi:10.2528/PIERL20123103 | Google Scholar

Abstract
This paper develops a circuit theory on bandpass negative group delay (NGD) topology. The NGD active lumped circuit uses a low noise amplifier (LNA). An S-parameter model is formulated. Unfamiliar, NGD function analysis is introduced by analytically defining the NGD value, bandwidth, and central frequency in function of the topology parameters. The synthesis formulas enabling the calculation of cell parameters as a function of the targeted bandpass function specifications. To validate the circuit theory, an NGD proof of concept (PoC) is designed, simulated and tested. As expected, simulations and measurements are in good agreement. Calculated model, simulated and measured results showing NGD level of about -10 ns around the centre frequency 0.5 GHz over the bandwidth 50 MHz validate are obtained.
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Citation
Dan Chen, Taochen Gu, Xiang Zhou, Fayu Wan, and Blaise Ravelo, "Study of Active Negative Group Delay Circuit Based on LNA and RLC-Parallel Network," Progress In Electromagnetics Research Letters, Vol. 96, 137-145, 2021.
doi:10.2528/PIERL20123103
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