Results 11 to 20 of about 1,189 (168)

Prevalence of Parkinson's Disease in 22q11.2 Deletion Syndrome: A Multicenter Study. [PDF]

Mov Disord Clin Pract
Abstract Background 22q11.2 deletion syndrome (22q11.2DS) has been associated with increased risk of early‐onset Parkinson's disease (PD). Objective To determine the prevalence and predictors of PD in a large international 22q11.2DS sample. Methods The sample comprised 856 adults (median age 28 (range 16–76) years; 53.0% female).
von Scheibler ENMM, Swillen A, Repetto GM, Reyes NGD, Lang AE, Marras C, Kuijf ML, Rouhl RPW, van Eeghen AM, Juri C, Vogels A, van Amelsvoort TAMJ, Bassett AS, Boot E.   +13 more
europepmc   +2 more sources

Design and Synthesis of Inductorless Passive Cell Operating as Stop-Band Negative Group Delay Function

IEEE Access, 2021
This paper develops an original circuit theory of unfamiliar stop-band (SB) negative group delay (NGD) topology. The proposed NGD topology is implemented without inductor component.
Mathieu Guerin, Yang Liu, Alexandre Douyere, George Chan, Fayu Wan, Sebastien Lallechere, Wenceslas Rahajandraibe, Blaise Ravelo   +7 more
doaj   +1 more source

CSRR DGS-Based Bandpass Negative Group Delay Circuit Design

IEEE Access, 2023
The unfamiliar negative group delay (NGD) circuit is the less familiar function for most of RF and microwave design engineers. Among the existing types, the bandpass (BP) NGD type circuits are the most convenient for the wireless communication microwave ...
Qizheng Ji, Taochen Gu, Zhiliang Gao, Ming Yang, Yafei Yuan, Hongyu Du, Fayu Wan, Nour Mohammad Murad, Glauco Fontgalland, Hugerles S. Silva, Blaise Ravelo   +10 more
doaj   +1 more source

Innovative Transient Study of Tri-Bandpass Negative Group Delay Applied to Microstrip Barcode-Circuit

IEEE Access, 2021
A transient study of bandpass (BP) negative group delay (NGD) function is devoted in this paper. The transient analysis is applied to an original topology of NGD barcode-shape microstrip circuit.
Lili Wu, Fayu Wan, Rym Assila Belhadj Mefteh, Remy Vauche, George Chan, Xiang Zhou, Fayrouz Haddad, Wenceslas Rahajandraibe, Blaise Ravelo   +8 more
doaj   +1 more source

0IO-Shape PCB Trace Negative Group-Delay Analysis

IEEE Access, 2020
This paper elaborates a negative group delay (NGD) analysis of 0IO-shape printed circuit board (PCB) traces. This circuit topology is originally implemented with a tri-coupled line (3CL) six-port element with the lateral side connected through lossy ...
Fayu Wan, Bin Liu, Preeti Thakur, Atul Thakur, Sebastien Lallechere, Wenceslas Rahajandraibe, Blaise Ravelo   +6 more
doaj   +1 more source

Theory and Original Design of Resistive-Inductive Network High-Pass Negative Group Delay Integrated Circuit in 130-nm CMOS Technology

IEEE Access, 2022
This paper develops an original design method of high-pass (HP) negative group delay (NGD) integrated circuit (IC). The considered HP-NGD IC is based on a passive topology which is essentially composed of resistor-inductor (RL) network.
Mathieu Guerin, Wenceslas Rahajandraibe, Glauco Fontgalland, Hugerles S. Silva, George Chan, Fayu Wan, Preeti Thakur, Atul Thakur, Jaroslav Frnda, Blaise Ravelo   +9 more
doaj   +1 more source

A Matched Negative Group Delay Circuit and its Integration With an Unequal Power Divider

IEEE Access, 2019
In this paper, a resonator coupling negative group delay (NGD) circuit with resistor-loaded coupled lines is presented firstly, and then an unequal Wilkinson power divider with NGD characteristic is designed by integrating the proposed NGD circuit into ...
Jian-Kang Xiao, Qiu-Fen Wang, Jian-Guo Ma   +2 more
doaj   +1 more source

Reconfigurable Negative Group Delay Circuit with a Low Insertion Loss Using a Coupled Line [PDF]

Journal of Electromagnetic Engineering and Science, 2020
This paper presents a design of a transmissive-type, low insertion loss (IL) negative group delay (NGD) circuit with a reconfigurable NGD. The proposed circuit consists of a series transmission lines (TLs) and shunt short-circuited coupled lines where an
Girdhari Chaudhary, Yongchae Jeong
doaj   +1 more source

Negative Group Delay Theory on Li Topology

IEEE Access, 2020
This paper investigates an innovative negative group delay (NGD) theory of “li” geometrical shape topology. The li-topology is an outstandingly simple and fully distributed circuit comprised of a coupled line (CL).
Blaise Ravelo, Lili Wu, Fayu Wan, Wenceslas Rahajandraibe, Nour Mohammad Murad   +4 more
doaj   +1 more source

Quad-Band NGD Investigation on Crossed Resonator Interconnect Structure [PDF]

, 2022
This brief explains why the coupling between crossed interconnect structure and straight I-lines of printed circuit board (PCB) presents bandpass (BP) negative group delay (NGD) behavior.
Blaise Ravelo, Fayu Wan, Jiahui Chen, Mordachev, V., Qizheng Ji, Taochen Gu   +5 more
core   +1 more source