Search results

Filters

  • Journals
  • Authors
  • Keywords
  • Date
  • Type

Search results

Number of results: 4
items per page: 25 50 75
Sort by:
Download PDF Download RIS Download Bibtex

Abstract

As we enter the 5G (5th-Generation) era, the amount of information and data has become increasingly tremendous. Therefore, electronic circuits need to have higher chip density, faster operating speed and better signal quality of transmission. As the carrier of electronic components, the design difficulty of high-speed PCB (Printed Circuit Board) is also increasing. Equal-length wiring is an essential part of PCB design. But now, it can no longer meet the needs of designers. Accordingly, in view of the shortcomings of the traditional equal-length wiring, this article proposes two optimization ways: the ”spiral wiring” way and the ”double spiral wiring” way. Based on the theoretical analysis of the transmission lines, the two optimization ways take the three aspects of optimizing the layout and wiring space, suppressing crosstalk and reducing reflection as the main points to optimize the design. Eventually, this article performs simulation and verification of schematic diagram and PCB of the optimal design by using HyperLynx simulation software. The simulation results show that these two ways not only improve the flexibility of the transmission line layout, but also improve the signal integrity of the transmission lines. Of course, this also proves the feasibility and reliability of the two optimized designs.
Go to article

Bibliography

[1] Gong Yonglin. The hot spots of printed circuit technology in 2020. Printed Circuit Information, 28(2):1–11, 2020.
[2] Myeonghoon Oh, Youngwoo Kim, Hag Young Kim, Young Kyun Kim, and Jinsung Kim. Wire optimization and delay reduction for highperformance on-chip interconnection in gals systems. Etri Journal, 39(4):582–591, 2017.
[3] YuanWei-Qun, Song Jian-Yuan, Chen Shi-Rong, Suntak Technology Co, and LTD. Research and optimization design of high-speed pcb based on signal integrity. Journal of Guangdong University of Technology, 36(6):74–79, 2019.
[4] L.W.; Zhao Z.L. Yang, C.Z.; De. Research on signal integrity in high speed digital pcb board design. Automation and Instrumentation, (9):1– 4, 2018.
[5] YuanWei-Qun, Song Jian-Yuan, Chen Shi-Rong, Suntak Technology Co, and LTD. Research and optimization design of high-speed pcb based on signal integrity. Journal of Guangdong University of Technology, 36(6):74–79, 2019.
[6] Zhang Min. Signal integrity and design optimization of high speed parallel bus interface. Wireless Internet Technology, 15(6):3–4, 2019.
[7] Nastaran Soleimani, Mohammad G H Alijani, and Mohammad Hassan Neshati. Crosstalk analysis of multi-microstrip coupled lines using transmission line modeling. International Journal of Rf and Microwave Computer-aided Engineering, 29(6), 2019.
[8] Y.; Wen C.L. Yong, J.H.; Ting. PADS software foundation and application examples. Publishing House of Electronics Industry, 2019.
[9] Teng Li. A study on si simulation of high-speed interconnection channel. Electronics and Packaging, 18(12):37–40, 2018.
[10] H. Sasaki, M. Kanazawa, T. Sudo, A. Tomishima, and T. Kaneko. New frequency dependent target impedance for ddr3 memory system. pages 1–4, 2011.
[11] C. Liao, B. Mutnury, C. Chen, and Y. Lee. Pcb stack-up design and optimization for next generation speeds. In 2016 IEEE 25th Conference on Electrical Performance Of Electronic Packaging And Systems (EPEPS), pages 155–158, 2016.
[12] Nastaran Soleimani, Mohammad GH Alijani, and Mohammad H Neshati. Crosstalk analysis at near-end and far-end of the coupled transmission lines based on eigenvector decomposition. AEU-International Journal of Electronics and Communications, 112:152944, 2019.
[13] X. Ye and C. Ye. Transmission lines and basic signal integrity. In 2018 IEEE Symposium on Electromagnetic Compatibility, Signal Integrity and Power Integrity (EMC, SI PI), pages 1–51, 2018.
[14] Wang Xiaojing, Ye Ming, and Ma Yan. Research crosstalk between parallel interconnects. Electronic Measurement Technology, 2015.
[15] J. Fan, X. Ye, J. Kim, B. Archambeault, and A. Orlandi. Signal integrity design for high-speed digital circuits: Progress and directions. IEEE Transactions on Electromagnetic Compatibility, 52(2):392–400, 2010.
[16] Dong Zhang, L. I. Qiong, and Qianqin Qin. Application of simulation analysis based on ibis model to sdram pcb design. Journal of Wuhan University, 2011.
[17] A. K. Pandey. Power-aware signal integrity analysis of ddr4 data bus in onboard memory module. In 2016 IEEE 20th Workshop on Signal and Power Integrity (SPI), pages 1–4, 2016.
[18] Nastaran Soleimani, Mohammad GH Alijani, and Mohammad H Neshati. Crosstalk analysis of multi-microstrip coupled lines using transmission line modeling. International Journal of RF and Microwave Computer-Aided Engineering, 29(6):e21677, 2019.
[19] S. M¨uller, T. Reuschel, R. Rimolo-Donadio, Y. H. Kwark, H. Br¨uns, and C. Schuster. Energy-aware signal integrity analysis for high-speed pcb links. IEEE Transactions on Electromagnetic Compatibility, 57(5):1226– 1234, 2015.
[20] Jie Tang, Yi Gong, and Zhen Guo Yang. Failure analysis on cracking of blind and buried vias of printed circuit board for high-end mobile phones. Soldering and Surface Mount Technology, 31(4), 2019.
[21] Liu Lu, Cao Yuesheng, and Duo Ruihua. Design and realization of high-density fdr interconnection switch board. Computer Engineering, (6):3, 2016.
[22] M S Al Salameh and M M Ababneh. Selecting printed circuit board parameters using swarm intelligence to minimize crosstalk between adjacent tracks. International Journal of Numerical Modelling-electronic Networks Devices and Fields, 28(1):21–32, 2015.
Go to article

Authors and Affiliations

Kaixing Cheng
1
Zhongqiang Luo
1
Xingzhong Xiong
1
Xiaohan Wei
1

  1. Artificial Intelligence Key Laboratory of Sichuan Province, Sichuan University of Science and Engineering, Yibin, China
Download PDF Download RIS Download Bibtex

Abstract

It is assumed in the paper that the signals in the enclosure in a transient period are similar to a noise induced by vehicles, tracks, cars, etc. passing by. The components of such signals usually points out specific dynamic processes running during the observation or measurements. In order to choose the best method of analysis of these phenomena, an acoustic field in a closed space with a sound source inside is created. Acoustic modes of this space influence the sound field. Analytically, the modal analyses describe the above mentioned phenomena. The experimental measurements were conducted in the room that might comprise the closed space with known boundary conditions and the sound source Brüel & Kjær Omni-directional type 4292 inside. To record sound signals before the field's steady state was reached, the microphone type 4349 and the 4-channel frontend 3590 had been used. The obtained signals have been analysed by using two approaches, i.e. Fourier and the wavelet analysis, with the emphasis on their efficiency and the capability to recognise important details of the signal. The results obtained for the enclosure might lead to the formulation of a methodology for an extended investigation of a rail track or vehicles dynamics.
Go to article

Authors and Affiliations

Andrzej Błażejewski
Piotr Kozioł
Maciej Łuczak
Download PDF Download RIS Download Bibtex

Abstract

Samples of CdTe single crystals which are used as radiation detectors were periodically measured during a long time interval with different values of an applied voltage. The samples were also periodically exposed during long time periods to high temperatures of 390 K and to rapid changes of temperature from 300 K to 390 K. After 1.5 years of measurements we observed ageing of the samples which resulted in deterioration of their transport characteristics. The resistance of the samples increased significantly and current-voltage characteristics were unstable in time. Noise spectroscopy showed that low frequency noise can be used for detection of CdTe sample ageing as its spectral density increases significantly comparing to the 1/f noise of a high quality sample

Go to article

Authors and Affiliations

Lubomír Grmela
Ondřej Šik
Alexey Andreev
Josef Sikula
Download PDF Download RIS Download Bibtex

Abstract

Very thin liquid jets can be obtained using electric field, whereas an electrically-driven bending instability occurs that enormously increases the jet path and effectively leads to its thinning by very large ratios, enabling the production of nanometre size fibres. This mechanism, although it was discovered almost one century ago, is not yet fully understood. In the following study, experimental data are collected, with the dual goal of characterizing the electro-spinning of different liquids and evaluating the pertinence of a theoretical model.

Go to article

Authors and Affiliations

T.A. Kowalewski
S. Błoński
S. Barral

This page uses 'cookies'. Learn more