Bandpass Negative Group Delay Theory of Fully Capacitive Δ-Network

Wan, Fang; Liu, Yang; Nebhen, Jamel; Xu, Zhifei; Chan, George; Lalléchère, Sébastien; Vauché, R.; Rahajandraibe, Wenceslas; Ravelo, Blaise

doi:10.1109/access.2021.3072485

Cited by 9 publications

(23 citation statements)

References 47 publications

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“…At the beginning, all the research work on LP-, HP-and BP-NGD circuit design was focused on two-port topologies . In the past two year, more general topologies of NGD circuit with multi-port accesses were performed [71][72][73][74][75][76][77][78]. The design feasibility was verified with three-port topologies as Y-or T-shape circuits [71][72][73][74].…”

Section: State Of the Art On Multi-port Ngd Circuitsmentioning

confidence: 98%

High Sensitivity Envelope Detector Assisted by Microwave Photonics

Gonçalves¹,

Ivo²,

Coutinho³

2022

Smart Systems: Theory and Advances

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Theory and Advances is licensed under CC BY 4.0.This license requires that reuses give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes.The content of the work and its data in its form, correctness and reliability are the sole responsibility of the authors, and do not represent the official position of Amplla Publishing. Downloading and sharing of the work is permitted as long as credit is given to the authors. All rights to this edition were ceded to Editora Amplla.

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Section: State Of the Art On Multi-port Ngd Circuitsmentioning

confidence: 98%

High Sensitivity Envelope Detector Assisted by Microwave Photonics

Gonçalves¹,

Ivo²,

Coutinho³

2022

Smart Systems: Theory and Advances

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“…Therefore, Table 3 addresses the main differences of the proposed work compared to what was done in the literature [33]- [47]. Different topologies of two- [33]- [44], three- [45], [47] and four- [46] port circuits are discussed.…”

Section: State-of-the-art Comparison Of Ngd Specificationsmentioning

confidence: 99%

Novel Tee-Shaped Topology Theory of Low- and High-Pass NGD Double-Type Function

Jia

Wan

Frnda³

et al. 2022

IEEE Access

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Recent investigation reports that certain electronic circuits operate with the unfamiliar negative group delay (NGD) function. It is fundamentally stated that the NGD circuits can be classified in different types. For example, we have the simplest ones as LP and HP NGD circuit types. So far, all the NGD studies are focused on simple type function. In step up of the research about the NGD electronic circuit engineering, this paper develops an original theory of electronic circuit topology operating with double NGDtype behavior. The study consists in the theorization of three-port circuit simultaneously generating LP and HP NGD function types. The proposed three-port innovative circuit under study is innovatively composed of resistive-capacitive (RC) network of Tee-shaped topology. Moreover, the LP and HP double-NGD circuit is a first order cell which does not contain any inductive component. The LP and HP NGD analyses of the Tee-topology is based on the 3-D S-matrix modelling. Analytical investigation based on classical circuit theory is elaborated to determine the S-matrix model from the equivalent admittance matrix. The identification of the double-NGD function is established from the LP-and HP-NGD canonical forms. Hence, the specific double-NGD characteristics are defined in function of the R and C elements constituting the three-port topology. To validate the developed double-NGD theory, a proof-of-concept (PoC) of SMD lumped component-based three-port circuit is designed, simulated, fabricated and tested. The calculated, simulated and measured results from the three-port circuit PoC prototype in very good agreement confirm the double-NGD behavior. The proposed innovative NGD three-port circuit design is useful in the future for the synchronization of signals propagating through multi-way communication system.INDEX TERMS Negative group delay (NGD), low-pass (LP) NGD function, high-pass (HP) NGD function, RC-network, circuit theory, three-port topology, LP-HP double-NGD analysis.

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Section: Introductionmentioning

confidence: 99%

“…The innovative classification concept of low‐pass (LP) 6,31 and bandpass (BP) 31–33 NGD circuit was established. Furthermore, as our ongoing research, we are constantly looking for the simplest NGD topologies by using resistive‐capacitive network, 6 resistor‐less lumped network, 32 and capacitive‐network 33 . In order to differentiate our work with all the existing NGD research work, we are developing a circuit theory of mono‐capacitor and extremely simple topology in the present paper which is organized in four main sections as follows: Section 2 is focused on the analytical modeling of the mono‐capacitor topology.…”

Section: Introductionmentioning

confidence: 99%

“…The admittance equivalent matrix will be elaborated. Then, the S‐matrix model will be derived from the admittance‐to‐S matrix transform as proposed in Ravelo et al and Wan et al 32,33 Section 3 develops the unfamiliar high‐pass (HP) NGD analysis of the mono‐capacitor topology which has never been done before. The identification method of the transmission coefficient is considered.…”

Section: Introductionmentioning

confidence: 99%

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Investigation on four‐port mono‐capacitor circuit with high‐pass negative group delay behavior

Fenni

Haddad

Jaomiary

et al. 2021

Circuit Theory & Apps

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Most of the recent studies on unfamiliar negative group delay (NGD) circuit were focused on the classes of low-pass (LP) and bandpass (BP) topologies. So far, few research works are currently available in the literature on the highpass (HP) NGD class. This paper introduces an original HP-NGD circuit theory of four-port passive topology constituted by a single lumped capacitor. The S-matrix equivalent model of the innovative topology is established from the admittance matrix. The basic analytical frequency-dependent responses are expressed. Then, the GD model is derived in function of the capacitor. It was analytically found that the four-port mono-capacitor passive circuit is susceptible to behave as an unfamiliar class of HP-NGD function. An innovative HP-NGD analysis is explored in addition to the expression of synthesis design equation in function of the expected NGD cut-off frequency which is linked to NGD optimal value. The validity of the established HP-NGD theory is verified with a proof of concept (POC) circuit. As expected, the POC enables HP-NGD behavior to show a good correlation between analytical model which is confirmed by the simulation.

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Bandpass Negative Group Delay Theory of Fully Capacitive Δ-Network

Cited by 9 publications

References 47 publications

High Sensitivity Envelope Detector Assisted by Microwave Photonics

High Sensitivity Envelope Detector Assisted by Microwave Photonics

Novel Tee-Shaped Topology Theory of Low- and High-Pass NGD Double-Type Function

Investigation on four‐port mono‐capacitor circuit with high‐pass negative group delay behavior

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