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Group delay flatness and bandwidth enhancement of wideband negative group delay microwave circuit
International Journal of RF and Microwave Computer-Aided Engineering, 2020A wideband negative group delay (NGD) microwave circuit with group delay flatness and bandwidth enhancement is proposed. The proposed negative group delay circuit (NGDC) is composed of a resistor connected by two transmission lines and a parallel branch consisted of a resistor linking with a stepped‐impedance transmission line and two open stubs.
Zhongbao Wang, Shaojun Fang, Hongmei Liu
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Investigation on Microwave Negative Group Delay Circuit
Electromagnetics, 2011Abstract In this article, a fundamental analytical approach and experimental verification of a radio frequency active circuit capable of exhibiting negative group delay at microwave wavelengths are presented. By using the S-parameter theory, basic properties and characteristics of the negative group delay circuit under study are established.
Blaise Ravelo
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Reconfigurable negative group delay circuit with tunable group delay flatness
International Journal of RF and Microwave Computer-Aided Engineering, 2022Zhongbao Wang, Shaojun Fang, Hongmei Liu
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A filter with equal-ripple negative group delay
2018 IEEE Radio and Wireless Symposium (RWS), 2018A new design method is proposed for filters with equal-ripple negative group delay (NGD). By combining the coupling matrix of bandstop filter with the nonuniform-s technique, the equal-ripple NGD characteristic is achieved. The ripple is mainly determined by the minimum dissipation factor of resonators, while the NGD is controlled by the maximum ...
Liang-Feng Qiu +3 more
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Negative group velocity and group delay in left-handed media
Physical Review E, 2004The dynamics of wave propagation in media with negative index of refraction is analyzed through analytical calculations, simulations, and experiments. Using a free space setup, the transmission characteristics of two split ring resonator and strip wire left-handed media (LHM), designed for operation at K -band frequencies (18-26 GHz), are measured. The
J F, Woodley, M, Mojahedi
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On the fractional domain analysis of negative group delay circuits
International Journal of Circuit Theory and Applications, 2023SummaryIn this work, the analysis of negative group delay circuits in fractional domain has been conducted. The low pass and the high pass negative group delay circuits constructed based on passive network have been chosen as our candidate circuits. For performing the analysis in fractional domain, the novel Caputo–Fabrizio derivative‐based fractional ...
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Systematic design of negative group delay circuits
AEU - International Journal of Electronics and CommunicationsBrent J Maundy +2 more
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A negative group delay model for feedback-delayed manual tracking performance
Journal of Computational Neuroscience, 2016We propose that feedback-delayed manual tracking performance is limited by fundamental constraints imposed by the physics of negative group delay. To test this hypothesis, the results of an experiment in which subjects demonstrate both reactive and predictive dynamics are modeled by a linear system with delay-induced negative group delay.
Henning U. Voss, Nigel Stepp
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Negative group delay circuit with independently tunable center frequency and group delay
2013 Asia-Pacific Microwave Conference Proceedings (APMC), 2013In this paper, a design of negative group delay circuit (NGDC) with independently tunable center frequency and group delay (GD) is presented. Since the proposed structure consists of a parallel RLC resonance circuit, it is possible to obtain a variable negative GD by using a variable resistor and an adjustment of center frequency of GD is possible due ...
Junhyung Jeong +4 more
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Dielectric Resonator Negative Group Delay Circuit
Radio Science, 2021AbstractThis study investigates an innovative theory on design of dielectric resonator (DR) based negative group delay (NGD) microwave circuit. The NGD circuit is mainly constituted by a cylindrical bulk of DR as a coupling element with a microstrip line. The developed theory is analytically established from the S‐parameters modeling of this innovative
Gu, Taochen +6 more
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