Results 31 to 40 of about 224 (115)

Reconstruction Technique of Distorted Sensor Signals With Low-Pass NGD Function

IEEE Access, 2020
This paper develops a new reconstruction technique of undesirable signal distortion generated by sensor electronic circuits. The introduced reconstruction technique is originally realized with unfamiliar low-pass negative group delay (NGD) function.
Blaise Ravelo, Wenceslas Rahajandraibe, Yajian Gan, Fayu Wan, Nour Mohammad Murad, Alexandre Douyere   +5 more
doaj   +1 more source

Design, Modeling and Synthesis of Negative Group Delay IL-Shape Topology

IEEE Access, 2019
This paper introduces a negative group delay (NGD) theory of passive topology presenting “IL”-shape geometry. The two-port topology is comprised of a coupled line with an open- and stub-loaded terminations.
Blaise Ravelo, Ningdong Li, Fayu Wan, Jiao Feng   +3 more
doaj   +1 more source

Design Method of Constant Phase-Shifter Microwave Passive Integrated Circuit in 130-nm BiCMOS Technology With Bandpass-Type Negative Group Delay

IEEE Access, 2022
The miniaturization and application development are the expected challenges on the today engineering design research on bandpass (BP) type negative group delay (NGD) circuit.
Blaise Ravelo, Mathieu Guerin, Jaroslav Frnda, Frank Elliot Sahoa, Glauco Fontgalland, Hugerles S. Silva, Samuel Ngoho, Fayrouz Haddad, Wenceslas Rahajandraibe   +8 more
doaj   +1 more source

Bandpass Negative Group Delay Theory of Fully Capacitive Δ-Network

IEEE Access, 2021
A particularly original negative group delay (NGD) theory of $\Delta $ -topology is developed in the present paper. The NGD three-port topology is a passive circuit purely constituted by capacitors network. The model of the proposed $\Delta $ -topology
Fayu Wan, Yang Liu, Jamel Nebhen, Zhifei Xu, George Chan, Sebastien Lallechere, Remy Vauche, Wenceslas Rahajandraibe, Blaise Ravelo   +8 more
doaj   +1 more source

Design Method for Negative Group Delay Circuits Based on Relations among Signal Attenuation, Group Delay, and Bandwidth [PDF]

Journal of the Korean Institute of Electromagnetic Engineering and Science, 2019
Typical negative group delay circuits (NGDC) are analyzed in terms of signal attenuation, group delay, and bandwidth using S-parameters. By inverting these formulations, we derive and present the design equations (for NGD circuit elements) for a desired ...
Sehun Na, Youn-Kwon Jung, Bomson Lee
doaj   +1 more source

Novel Digital NGD Methodology for FPGA-Based Embedded Systems

IEEE Access
Negative Group Delay (NGD) is a concept not widely explored in embedded digital signal processing systems, and this study aims to fill this gap. It presents a novel methodology for implementing NGD using second-order Finite Impulse Response (FIR) filter.
Rivo Randriatsiferana, Jordane Lorandel, Ruben Salvador, Christophe Moy   +3 more
doaj   +1 more source

Parametric Geometrical Study of OOO-Microstrip Circuit with Dual-Band Bandpass NGD Behavior [PDF]

Radioengineering, 2021
This paper introduces a bandpass (BP) NGD circuit design engineering. The developed circuit is de¬signed and implemented using distributed microstrip tech-nology and operates with outstanding dual-band bandpass NGD performance added with low attenuation.
R. Yang, F. Wan, J. Nebhen, S. Lallechere, B. Ravelo   +4 more
doaj  

Frequency-Selective Surface Based on Negative-Group-Delay Bismuth–Mica Medium

Photonics, 2023
Negative group delay may be observed in dispersive media with anomalous dispersion in a certain frequency range. The fact that an outgoing wave packet precedes an incoming one does not violate the causality principle but is only a consequence of a ...
Anton D. Zaitsev, Petr S. Demchenko, Natallya S. Kablukova, Anna V. Vozianova, Mikhail K. Khodzitsky   +4 more
doaj   +1 more source

The Design Method of the Active Negative Group Delay Circuits Based on a Microwave Amplifier and an RL-Series Network

IEEE Access, 2018
This paper addresses a circuit theory regarding the negative group delay (NGD) principle. The methodology for characterizing this unfamiliar NGD function is described.
Fayu Wan, Ningdong Li, Blaise Ravelo, Qizheng Ji, Binhong Li, Junxiang Ge   +5 more
doaj   +1 more source

Dual-Band Negative Group Delay Microwave Circuit With Low Signal Attenuation and Arbitrary Frequency Ratio

IEEE Access, 2020
A dual-band negative group delay (NGD) microwave circuit with low signal-attenuation and arbitrary frequency ratio is proposed. Closed-form analytical equations are derived for the design of the proposed dual-band negative group delay circuit (NGDC) with
Yuwei Meng, Zhongbao Wang, Shaojun Fang, Te Shao, Hongmei Liu, Zhining Chen   +5 more
doaj   +1 more source