A5064057065- Quantum optics and atomic interactions
- Electromagnetic Compatibility and Noise Suppression
- Quantum and electron transport phenomena
- Microwave Engineering and Waveguides
- Atomic and Subatomic Physics Research
- Electromagnetic Compatibility and Measurements
- Photonic and Optical Devices
- Advanced Antenna and Metasurface Technologies
- Radio Frequency Integrated Circuit Design
- Mechanical and Optical Resonators
- Terahertz technology and applications
- Electrostatic Discharge in Electronics
- Advancements in PLL and VCO Technologies
- Photorefractive and Nonlinear Optics
- 3D IC and TSV technologies
- Low-power high-performance VLSI design
- Magnetic Properties and Synthesis of Ferrites
- Antenna Design and Analysis
- Microwave and Dielectric Measurement Techniques
- VLSI and FPGA Design Techniques
- Multiferroics and related materials
- Advanced Frequency and Time Standards
- Energy Harvesting in Wireless Networks
- Wireless Body Area Networks
- Lightning and Electromagnetic Phenomena
Nanjing University of Information Science and Technology
2019-2025
Dalian Neusoft University of Information
2024-2025
Nanjing University of Science and Technology
2023
Université de Rennes
2022
Centre Hospitalier Universitaire de La Réunion
2022
Université Lille Nord de France
2022
Centre National de la Recherche Scientifique
2007-2022
Institut d'Électronique et des Technologies du numéRique
2022
École Supérieure d'Ingénieurs en Génie Électrique
2011-2020
Institut de Recherche en Systèmes Electroniques Embarqués
2010-2020
ABSTRACT This paper deals with the similitude between behaviours of linear filter gain and negative group delay (NGD) function. The transposition method low‐pass/high‐pass, low‐pass/band‐pass low‐pass/band‐stop NGD circuits is established. To best author knowledge, it acts as first devoted on function generalized theory. introduced transform relationships simplify synthesis any from simple elementary low‐pass topologies. Families innovative topologies are identified. verify relevance concept...
<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> In this letter, we report on the design, simulation and implementation of an active negative group delay circuit that operates at 1 GHz with a gain, respectively, around <formula formulatype="inline"><tex>${-}$</tex> </formula>2 ns 2 dB. Analytical formulas are proposed to demonstrate adopted topology is able simultaneously achieve (NGD) gain while fulfilling device constraints. The theoretical...
A fundamental theory of coupled line coupler-based negative group delay (NGD) topology is established in this paper. The microwave circuit under study consists the isolated-and coupled-accesses connected a feedback loop through lossy interconnect line. NGD built with fully distributed elements. S-parameter model formulated order to derive optimal values, cutoff frequencies, and bandwidth. Thus, existence condition as function coupling coefficient interconnection attenuation demonstrated...
An innovative theory on the passive circuits capable to generate low‐pass negative group delay (NGD) behaviour is introduced. identification method enabling identify first‐order NGD simple cells built with resistor‐inductor (RL)‐ and resistor‐capacitor (RC)‐networks elaborated. The fundamental characteristics as level cut‐off frequency are formulated from circuit canonical transfer function. existence conditions derived in function of established topology parameters. Despite attenuation...
This brief introduces an original reduction method of resonance effect dispersion by using bandpass negative group delay (NGD) function. The transfer function (TF) is model lumped RLC circuit. canonical parameters NGD passive cell are innovatively formulated as a the specifications. developed feasibility validated with commercial tool frequency domain simulations. Proofs-of-concept constituted RLC-resonant and fully circuits considered. results confirm obvious peak magnitudes GDs from...
Abstract The new phase‐shifter configuration described in this report uses a negative group delay (NGD) active circuit. In topology, classical transmission line is set cascade with an NGD circuit whose phase slopes are alike, but opposite, to get constant and broadband shift. proposed approach was validated through the design measurement of shifter, which exhibited 90° ± 5° over 75% relative bandwidth around 1.6 GHz. Moreover, as compensated one, overall kept small value operating frequency...
Population aging and increasing pressure on health systems are two issues that demand solutions. Involving empowering citizens as active managers of their represents a desirable shift from the current culture mainly focused treatment disease, to one also continuous management well-being. Current developments in technological areas such Internet Things (IoT), lead new solutions can aid this healthcare sector. This study presents design, development, implementation evaluation platform called...
This paper develops an innovative method of sensors' time-delay suppression. The proposed delay cancellation technique is highlighted with a theoretical concept and time-domain experimental demonstrations by using the negative group (NGD) function. analytical investigation elaborated NGD topology constituted simple active RC network. It established theoretically that this cell behaves like low-pass topology. synthesis equations enabling to calculate parameters as function desired gain are...
This paper develops an innovative design method of a multi-coupled line (CL) topology low-loss dual band negative group delay (NGD) circuit. The proposed is conceived using three transmission lines (TLs) with different length in which integrate two couplers. traveling paths are designed to generate the dual-band NGD effect, where CLs allow lowering signal attenuation. circuit S-parameter model as function TLs physical lengths and coupling coefficient established. To validate...
This paper deals with the design and synthesis of active circuits able to simultaneously produce negative group delay gain at microwave frequencies or for baseband signals. Analytical equations show that proposed topology meets these objectives while also satisfying device requirements. Then, a approach is extracted applied two-stage circuit, further validated by experimental results. method extended four-stage circuit providing up 600 MHz. A high relative time-advance evidenced time-domain...