Reducing crosstalk noise in high speed FPGAs

2004 ◽  
Author(s):  
A. Mukherjee
Keyword(s):  
High Speed ◽  
Crosstalk Noise

scholarly journals Modeling, Verification and Signal Integrity Analysis of High-Speed Signaling Channel with Tabbed Routing in High Performance Computing Server Board

Electronics ◽  
2021 ◽  
Vol 10 (13) ◽  
pp. 1590
Author(s):  
Kyunghwan Song ◽  
Jongwook Kim ◽  
Hyunwoong Kim ◽  
Seonghi Lee ◽  
Jangyong Ahn ◽  
...  
Keyword(s):  
Frequency Domain ◽  
Time Domain ◽  
High Speed ◽  
High Performance ◽  
Design Parameters ◽  
Crosstalk Noise ◽  
Segmentation Approach ◽  
The Time Domain ◽  
Integrity Analysis ◽  
3D Em

It is necessary to reduce the crosstalk noise in high-speed signaling channels. In the channel routing area, the tabbed routing pattern is used to mitigate far-end crosstalk (FEXT), and the electrical length is controlled with a time domain reflectometer (TDR) and time domain transmission (TDT). However, unlike traditional channels having uniform width and space, the width and space of tabbed routing changes by segment, and the capacitance and inductance values of tabbed routing also change. In this paper, we propose a tabbed routing equivalent circuit modeling method using the segmentation approach. The proposed model was verified using 3D EM simulation and measurement results in the frequency domain. Based on the calculated inductance and capacitance parameters, we analyzed the insertion loss, FEXT, and self-impedance in the frequency domain, and TDT and FEXT in the time domain, by comparing the values of these metrics with and without tabbed routing. Using the proposed tabbed routing model, we analyzed tabbed routing with variations of design parameters based on self- and mutual-capacitance and inductance.

GENERATION OF A PROBABILISTIC MODEL OF CYCLOSTATIONARY SIGNALS IN TRANSMISSION LINES OF ELECTRONIC DEVICES

2020 ◽  
Author(s):  
М.А. КОНОВАЛЮК ◽  
А.Б. БАЕВ ◽  
А.А. ГОРБУНОВА ◽  
Ю.В. КУЗНЕЦОВ
Keyword(s):  
Transmission Lines ◽  
Computer Aided Design ◽  
High Speed ◽  
Probabilistic Models ◽  
Electronic Devices ◽  
Crosstalk Noise ◽  
Useful Signal ◽  
Probability Densities ◽  
Systems Simulation ◽  
Cyclostationary Signals

При оценке целостности информационных сигналов, передаваемых по высокоскоростным линиям передачи, возникает необходимость в использовании вероятностных моделей случайных процессов. В существующих системах автоматизированного проектирования имитационное моделирование проводится для конечного числа реализаций сигнала, что ограничивает точность оценки статистическиххарактеристик. При проведении контрольных измерений применяются тестовые псевдослучайные последовательности конечной длительности. Контролируемые уровни вероятности ошибки могут составлять величины порядка 10-12. В таких случаях в программном обеспечении измерительной техники прибегают к оцениванию параметров вероятностных моделей. Существующие модели не позволяют проводить обработку сигналов для компенсации помех, вызванных электромагнитными наводками. В данной работе предложена модель двумерных плотностей вероятностей измеренных сигналов и помех, использование которой совместно с методом принципиальных и независимых компонент позволит в будущем компенсировать искажения полезного сигнала за счет наводок. When assessing the integrity of information signals transmitted on high-speed transmission lines, it is necessary to use probabilistic models of random processes. In existing computer-aided design systems, simulation is carried out for a finite number of signal realizations, which limits the prediction capabilities. During compliance tests of electronic devices test pseudo-random sequences of finite length are used. Controlled levels of probabilities can be less than 10-12. In such cases, the software functions provide an estimation of the parameters of probabilistic models for measurement equipment. The existing models do not allow to compensate for interference caused by electromagnetic crosstalk noise. In this paper, the model of two-dimensional probability densities of the measured signals and interference is introduced. This model combined with well-known methods of principal and independent components will allow compensating for the distortion of the useful signal due to interference.

Reduction of crosstalk noise in modular jack for high-speed differential signal interconnection

2001 ◽  
Vol 24 (3) ◽  
pp. 260-267 ◽  
Author(s):  
Namhoon Kim ◽  
Myunghee Sung ◽  
Hyungsoo Kim ◽  
Seungyong Baek ◽  
Woonghwan Ryu ◽  
...  
Keyword(s):  
High Speed ◽  
Crosstalk Noise ◽  
Differential Signal

scholarly journals Using rectangular trace to reduce the crosstalk of the coupled microstrip lines

2015 ◽  
Vol 5 (1) ◽  
pp. 7
Author(s):  
Ahmed Ali Hussein
Keyword(s):  
Electromagnetic Interference ◽  
High Speed ◽  
Printed Circuit Boards ◽  
Signal Integrity ◽  
Circuit Boards ◽  
Crosstalk Noise ◽  
Circuit Performance ◽  
Microstrip Lines ◽  
Via Hole ◽  
Better Than

New electronic products must have high-speed, small size and lower voltages supply. With such layout, signal integrity (SI) becomes an actual important issue because sensitive equipment is affected on electromagnetic interference (EMI). Crosstalk is a major factor in signal integrity (SI) of printed circuit boards (PCBs). Crosstalk noise is usually represented in terms of Near-End crosstalk (NEXT) and Far-End crosstalk (FEXT). Crosstalk is a common problem that degrades circuit performance. To reduce this problem, via hole-fences connected by guard trace between double microstrip lines are used, in this case the crosstalk will be reduce by 6 dB than use 3W rule, but when it replaced by rectangular metal the crosstalk was reduce by 7dB, is better than use via hole-fences by 1 dB. The simulation result was done by using FEKO 5.5 simulator.

High-Speed Data Transmission Techniques Using Raised Cosine Signaling

2010 ◽  
Vol 459 ◽  
pp. 252-259 ◽  
Author(s):  
Yasushi Yuminaka
Keyword(s):  
Data Transmission ◽  
High Speed ◽  
Pulse Shaping ◽  
Signal Integrity ◽  
Rectangular Pulse ◽  
Crosstalk Noise ◽  
Digital Signals ◽  
Limited Bandwidth ◽  
High Speed Data ◽  
Speed Data Transmission

In this paper, we propose new pulse-shaping techniques using raised cosine signaling instead of using conventional digital signals (rectangular waves), to reduce Inter-symbol interference (ISI) and crosstalk noise. Unlike a rectangular pulse, the raised cosine pulse takes on the shape of a sinc pulse that minimizes ISI. Also, limited bandwidth of the signal can reduce crosstalk noise. We show the simulation and experimental results of the raised cosine signaling scheme to show the new signaling method plays a critical part in maintaining signal integrity in high-speed VLSI systems.

Sign in / Sign up

Export Citation Format

Share Document