• Title/Summary/Keyword: Crosstalk Effect

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The Mathematical Model on Crosstalk Effect of Airborne Noise Sources and Verification based on Comparison between Transfer Path Analysis Methods (소음원간 누화 효과에 대한 수학적 모델 및 전달 경로 분석법 비교를 통한 검증)

  • Byun, Jae-Hwan;Kim, Yoon-Jae;Kang, Yeon-June;Kang, Koo-Tae;Kwon, O-Jun;Hong, Jin-Chul
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.18 no.9
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    • pp.943-951
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    • 2008
  • In this paper, the mathematical model on crosstalk effect between acoustic noise sources is presented. Based on this model, a theoretical value to quantitate crosstalk effect of sources can be defined on the authority of reverberation property of surrounding which sources are located, relative magnitudes of sources and phase deference between acoustic wave transferred from all of sources. In order to verify crosstalk effect factor, experiments are made for two cases, weak and strong crosstalk effect condition, by using toro representative transfer path analysis(TPA) methods.

Crosstalk Noise by Shrinkage of Thick Holographic Photopolymer (광폴리머를 사용한 두꺼운 홀로그램의 수축에 의한 혼선잡음)

  • Hwang Yongsop;Kim Kun-Yul;Park Jooyoun;Nam Haeun
    • 정보저장시스템학회:학술대회논문집
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    • 2005.10a
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    • pp.134-138
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    • 2005
  • The crosstalk noise of thick holographic photopolymer is studied. Three different experiments, (1) reading area dependency (2) post-exposure effect (3) effect of later recorded holograms on earlier recorded holograms, have been accomplished and a tendency of crosstalk noises has been found for each case. The larger reading area, the higher crosstalk noises fur the later recorded holograms. Before the post-exposure the crosstalk noises are higher in the earlier recorded holograms, but after the post-exposure the crosstalk noises we higher in the later recorded holograms. The crosstalk noises of the earlier recorded holograms become higher as more holograms are recorded by multiplexing. To explain the tendency of crosstalk noises of these experiments, we suggest a model considering the anisotropic shrinkage of the photopolymer According to the model. the shrinkage is more dominant at the center of the recorded region than the edge of that. After the post-exposure, however, the amount of shrinkage becomes the same far the whole recorded region. The results of all three experiments are well explained by this model.

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Design Technique for Minimizing the Crosstalk Effect in Multiaxis Thrust Measurement Stand (다축 시험대의 상호 간섭 최소화 설계기법)

  • Kim, Joung-Keun;Yoon, Il-Sun
    • Journal of the Korean Society of Propulsion Engineers
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    • v.11 no.3
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    • pp.13-19
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    • 2007
  • This paper described design method to minimize the crosstalk effect of multiaxis thrust measurement stand which can measure the thrust vector control performance of Solid Rocket Motor. This paper presents a theoretical solution for predicting the magnitude of crosstalk and calculates design sensitivity. The results indicate that the most important parameter of crosstalk is the displacement of flexure-loadcell-flexure assembly. And shape, dimension and mechanical properties of flexure and loadcell can also influence the magnitude of crosstalk.

A Study On Effects of The Termination Conditions on Crosstalk in The A/D Converter Circuit (A/D 변환기 회로에서 터미네이션 임피던스의 crosstalk에 대한 영향 분석)

  • Lim, Han-Sang
    • Journal of the Institute of Electronics Engineers of Korea SC
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    • v.47 no.2
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    • pp.35-42
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    • 2010
  • In this study, crosstalk between dominant interconnect pairs in an A/D converter circuit is analyzed in frequency domain and effects of termination conditions on crosstalk are described, based on the practical circuit conditions. An A/D converter circuit is a mixed circuit where both clean and noisy signals coexist such that the circuit probably suffers from distortion by crosstalk. An analog input signal and the reference voltage signal, which dominate the overall conversion performance of the A/D converter circuit, are ready to be distorted by crosstalk and include specific termination conditions, such as non-matching and capacitive termination, respectively. Thus, this study presents the model of crosstalk considering impedance mismatch at both ends and analyzes effects of the practical termination conditions in the analog input and the reference voltage interconnects on crosstalk. A typical circuit configuration of the two interconnects is described and crosstalk including near-end and far-end termination impedances is modeled. Effects of the near-end impedance mismatch in the analog input interconnect and the far-end capacitive termination in the reference voltage interconnect are estimated in the frequency domain by using the model of crosstalk and experiments are performed to confirm the estimated results. Microstrip lines are used as interconnects, involving the increase of loss in high frequencies.

Driving Environment Recognition and a Simple Wall-Following Algorithm for AGV Using Sonar Sensor (초음파 센서를 이용한 AGV의 주행 환경 인식과 간단한 벽면 따르기 알고리즘)

  • Kim, Seong-Joong;Lee, Jeong-Woong;Lee, Chang-Goo
    • Proceedings of the KIEE Conference
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    • 2002.07d
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    • pp.2337-2340
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    • 2002
  • This paper presents the method of AGV(Automatic guided vehicle)'s moving environment(plane, corner, edge) recognition using SONAR sensor configuration. As for the SONAR sensor, the Crosstalk effect has been generally considered as an inevitable noisy phenomenon in the indoor environment. However, this effect can be used as a clue for classifying and localizing targets in the indoor environment if those can be controlled and used well. EERUF(error eliminate rapid ultrasonic firing) is a method for firing multiple ultrasonic sensors in mobile robot application and multi-echo mode of POLARIOD Device can reduce the Crosstalk effect. Here, Crosstalk effect was reduced using EERUF and applied to the AGV with a simple wall-following algorithm in the indoor environment. This method was tesed by a typical AGV with multi SONAR sensors in the laboratory environment.

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Analysis of Crosstalk between PCB Traces in Frequency and Time Domain (주파수 및 시간 영역에서 인쇄회로기판 선로의 혼신 해석)

  • 이애경;심환우;조광윤
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.7 no.5
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    • pp.430-439
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    • 1996
  • In printed circuit board (PCB) design, it is necessary to predict the crosstalk effect among traces on the circuitary behavior. In this paper, crosstalk between parallel or crossing traces was treated by the finite difference time domain (FDTD) method. They are the typical models of PCB traces and the crosstalk is a major contributor in the creation of electromagnetic interference (EMI). The crosstalk effect was computed for the variation of distance spacing and length of parallel traces and crossing traces. The results in time and frequency domain are discussed and compared with those using MDS(microwave design system) and HFSS(high frequency structure simulator). The comparison shows that the FDTD method can be of wide application in analysis model and save the time required for calculation.

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Crosstalk evaluation in multiview autostereoscopic three-dimensional displays with an optimized diaphragm applied

  • Peng, Yi-Fan;Li, Hai-Feng;Zheng, Zhen-Rong;Xia, Xin-Xing;Yao, Zhi;Liu, Xu
    • Journal of Information Display
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    • v.13 no.2
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    • pp.83-89
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    • 2012
  • The crosstalk evaluation of multiview autostereoscopic three-dimensional (3D) displays is discussed, with both the human and technical factors investigated via image quality assessment. In the imaging performance measurements and analysis for a multiview autostereoscopic display prototype equipment, it was inferred that crosstalk would have both a positive and a negative effect on the imaging performance of the equipment. The importance of the attached diaphragm in the crosstalk evaluation was proposed and then experimentally verified, using the developed prototype equipment. The luminance distribution and crosstalk situation were given, with two different diaphragm arrays applied. The analysis results showed that the imaging performance of this 3D display system can be improved with minimum changes to the system structure.

Test Generation for Multiple Line Affecting Crosstalk Effect (다중 전송선에 영향을 받는 Crosstalk 잡음을 위한 테스트 생성)

  • Lee, Young-Gyun;Yang, Sun-Woong;Kim, Moon-Joon;Chang, Hoon
    • Journal of the Institute of Electronics Engineers of Korea SD
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    • v.39 no.9
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    • pp.28-36
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    • 2002
  • As cross-coupling capacitance generated in transmission line has been an important issue in VLSI world, a couple of ATPG algorithms has been proposed. However they were studied only for a simple single-line effect problem, so it cost so much time for an unsatisfying test generation efficiency. In this paper, we studied a noise model for multiple affected lines and generated test patterns in a short time. This paper proposes a crosstalk model affected by multiple tranmission lines and implemented an ATPG algorithm for detection of crosstalk noise faults. We modeled the crosstalk noise by multiple transmission line and made a truth table for this. We implemented an ATPG algorithm based on PODEM and revealed the results.

Signal Transient and Crosstalk Model of Capacitively and Inductively Coupled VLSI Interconnect Lines

  • Kim, Tae-Hoon;Kim, Dong-Chul;Eo, Yung-Seon
    • JSTS:Journal of Semiconductor Technology and Science
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    • v.7 no.4
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    • pp.260-266
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    • 2007
  • Analytical compact form models for the signal transients and crosstalk noise of inductive-effect-prominent multi-coupled RLC lines are developed. Capacitive and inductive coupling effects are investigated and formulated in terms of the equivalent transmission line model and transmission line parameters for fundamental modes. The signal transients and crosstalk noise expressions of two coupled lines are derived by using a waveform approximation technique. It is shown that the models have excellent agreement with SPICE simulation.

Study on crosstalk effect of VDSL systems (VDSL 시스템의 상호 누화 영향에 관한 연구)

  • Lee, Jong-Hoon;Han, Ki-Hoon;Park, June;Lee, Jae-Jin;Song, Sang-Seob
    • Proceedings of the IEEK Conference
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    • 2003.11c
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    • pp.3-6
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    • 2003
  • Crosstalk among telephone lines in the same bundles is a major impairment in current VDSL systems. In this paper, we analysis the crosstalk effect of DSL using different frequency band upon ANSI standard VDSL systems. Simulation results show that data rate of ANSI VDSL decrease by crosstalk from another VDSL using different frequency. This study has the potential implication and benefit for ANSI standard DMT VDSL energy distribution in subchannel

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