Research on Clock Circuit Electromagnetic Emission Test and Suppression

Bai Yijie; Wu Shengnan

doi:doi:10.11648/j.sd.20210904.13

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Research on Clock Circuit Electromagnetic Emission Test and Suppression

Bai Yijie, Wu Shengnan

Published in Science Discovery (Volume 9, Issue 4)

Received: 20 April 2021 Accepted: Published: 4 June 2021

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Abstract

Clock circuit is an important part of PCB, which is usually composed of crystal oscillator, crystal oscillator control chip and capacitor. Electromagnetic emission generated by clock circuit is one of the main interference sources of electronic equipment. According to the different transmission paths, electromagnetic interference caused by clock circuit usually includes conduction interference and radiation interference. When the electromagnetic emission generated by the clock circuit reaches a certain degree, it may affect the electromagnetic compatibility of electronic equipment. In this paper, by analyzing the frequency spectrum characteristics of the clock signal, the difference of the frequency spectrum of the clock signal under different parameters is compared, and the electromagnetic emission test method is given. On this basis, when the EMI suppression method of clock circuit is studied, a series of EMC design methods of clock circuit are summarized, and the application of spread spectrum technology in clock circuit is proposed.

Published in	Science Discovery (Volume 9, Issue 4)
DOI	10.11648/j.sd.20210904.13
Page(s)	145-149
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Clock Circuit, Electromagnetic Emission, Interference Suppression, Spread Spectrum

References

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APA Style

Bai Yijie, Wu Shengnan. (2021). Research on Clock Circuit Electromagnetic Emission Test and Suppression. Science Discovery, 9(4), 145-149. https://doi.org/10.11648/j.sd.20210904.13

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ACS Style

Bai Yijie; Wu Shengnan. Research on Clock Circuit Electromagnetic Emission Test and Suppression. Sci. Discov. 2021, 9(4), 145-149. doi: 10.11648/j.sd.20210904.13

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AMA Style

Bai Yijie, Wu Shengnan. Research on Clock Circuit Electromagnetic Emission Test and Suppression. Sci Discov. 2021;9(4):145-149. doi: 10.11648/j.sd.20210904.13

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@article{10.11648/j.sd.20210904.13,
  author = {Bai Yijie and Wu Shengnan},
  title = {Research on Clock Circuit Electromagnetic Emission Test and Suppression},
  journal = {Science Discovery},
  volume = {9},
  number = {4},
  pages = {145-149},
  doi = {10.11648/j.sd.20210904.13},
  url = {https://doi.org/10.11648/j.sd.20210904.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.sd.20210904.13},
  abstract = {Clock circuit is an important part of PCB, which is usually composed of crystal oscillator, crystal oscillator control chip and capacitor. Electromagnetic emission generated by clock circuit is one of the main interference sources of electronic equipment. According to the different transmission paths, electromagnetic interference caused by clock circuit usually includes conduction interference and radiation interference. When the electromagnetic emission generated by the clock circuit reaches a certain degree, it may affect the electromagnetic compatibility of electronic equipment. In this paper, by analyzing the frequency spectrum characteristics of the clock signal, the difference of the frequency spectrum of the clock signal under different parameters is compared, and the electromagnetic emission test method is given. On this basis, when the EMI suppression method of clock circuit is studied, a series of EMC design methods of clock circuit are summarized, and the application of spread spectrum technology in clock circuit is proposed.},
 year = {2021}
}

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TY  - JOUR
T1  - Research on Clock Circuit Electromagnetic Emission Test and Suppression
AU  - Bai Yijie
AU  - Wu Shengnan
Y1  - 2021/06/04
PY  - 2021
N1  - https://doi.org/10.11648/j.sd.20210904.13
DO  - 10.11648/j.sd.20210904.13
T2  - Science Discovery
JF  - Science Discovery
JO  - Science Discovery
SP  - 145
EP  - 149
PB  - Science Publishing Group
SN  - 2331-0650
UR  - https://doi.org/10.11648/j.sd.20210904.13
AB  - Clock circuit is an important part of PCB, which is usually composed of crystal oscillator, crystal oscillator control chip and capacitor. Electromagnetic emission generated by clock circuit is one of the main interference sources of electronic equipment. According to the different transmission paths, electromagnetic interference caused by clock circuit usually includes conduction interference and radiation interference. When the electromagnetic emission generated by the clock circuit reaches a certain degree, it may affect the electromagnetic compatibility of electronic equipment. In this paper, by analyzing the frequency spectrum characteristics of the clock signal, the difference of the frequency spectrum of the clock signal under different parameters is compared, and the electromagnetic emission test method is given. On this basis, when the EMI suppression method of clock circuit is studied, a series of EMC design methods of clock circuit are summarized, and the application of spread spectrum technology in clock circuit is proposed.
VL  - 9
IS  - 4
ER  -

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Author Information

Bai Yijie

Beijing Aerospace Measurement & Control Corp., Beijing, China
Wu Shengnan

Tianjin 712 Communication Broadcasting Company, Tianjin, China

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APA Style

Bai Yijie, Wu Shengnan. (2021). Research on Clock Circuit Electromagnetic Emission Test and Suppression. Science Discovery, 9(4), 145-149. https://doi.org/10.11648/j.sd.20210904.13

Copy | Download

ACS Style

Bai Yijie; Wu Shengnan. Research on Clock Circuit Electromagnetic Emission Test and Suppression. Sci. Discov. 2021, 9(4), 145-149. doi: 10.11648/j.sd.20210904.13

Copy | Download

AMA Style

Bai Yijie, Wu Shengnan. Research on Clock Circuit Electromagnetic Emission Test and Suppression. Sci Discov. 2021;9(4):145-149. doi: 10.11648/j.sd.20210904.13

Copy | Download

@article{10.11648/j.sd.20210904.13,
  author = {Bai Yijie and Wu Shengnan},
  title = {Research on Clock Circuit Electromagnetic Emission Test and Suppression},
  journal = {Science Discovery},
  volume = {9},
  number = {4},
  pages = {145-149},
  doi = {10.11648/j.sd.20210904.13},
  url = {https://doi.org/10.11648/j.sd.20210904.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.sd.20210904.13},
  abstract = {Clock circuit is an important part of PCB, which is usually composed of crystal oscillator, crystal oscillator control chip and capacitor. Electromagnetic emission generated by clock circuit is one of the main interference sources of electronic equipment. According to the different transmission paths, electromagnetic interference caused by clock circuit usually includes conduction interference and radiation interference. When the electromagnetic emission generated by the clock circuit reaches a certain degree, it may affect the electromagnetic compatibility of electronic equipment. In this paper, by analyzing the frequency spectrum characteristics of the clock signal, the difference of the frequency spectrum of the clock signal under different parameters is compared, and the electromagnetic emission test method is given. On this basis, when the EMI suppression method of clock circuit is studied, a series of EMC design methods of clock circuit are summarized, and the application of spread spectrum technology in clock circuit is proposed.},
 year = {2021}
}

Copy | Download

TY  - JOUR
T1  - Research on Clock Circuit Electromagnetic Emission Test and Suppression
AU  - Bai Yijie
AU  - Wu Shengnan
Y1  - 2021/06/04
PY  - 2021
N1  - https://doi.org/10.11648/j.sd.20210904.13
DO  - 10.11648/j.sd.20210904.13
T2  - Science Discovery
JF  - Science Discovery
JO  - Science Discovery
SP  - 145
EP  - 149
PB  - Science Publishing Group
SN  - 2331-0650
UR  - https://doi.org/10.11648/j.sd.20210904.13
AB  - Clock circuit is an important part of PCB, which is usually composed of crystal oscillator, crystal oscillator control chip and capacitor. Electromagnetic emission generated by clock circuit is one of the main interference sources of electronic equipment. According to the different transmission paths, electromagnetic interference caused by clock circuit usually includes conduction interference and radiation interference. When the electromagnetic emission generated by the clock circuit reaches a certain degree, it may affect the electromagnetic compatibility of electronic equipment. In this paper, by analyzing the frequency spectrum characteristics of the clock signal, the difference of the frequency spectrum of the clock signal under different parameters is compared, and the electromagnetic emission test method is given. On this basis, when the EMI suppression method of clock circuit is studied, a series of EMC design methods of clock circuit are summarized, and the application of spread spectrum technology in clock circuit is proposed.
VL  - 9
IS  - 4
ER  -

Copy | Download