Main cause of resonance appeared around 7.5GHz on the frequency response of S-parameters of PWB

  • Zhang Nian Yong
  • , Men Chuan
  • , Takeshi Kawai
  • , Ren Wei
  • , Wu Xiao Qing
  • , Hirofumi Futamura
  • , Nobumichi Goto
  • , Wu YouHong
  • , Takahiro Yamashita

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Hardware engineers engaging in the mobile system pursue lower power, less weight and higher performance by minimizing the main factors impacting the Printed-Wiring-Board (PWB) performance which involve a large number of discontinuities. It happens to meet the abnormal phenomenon like a resonance, even in the PWB comprised of only the transmission lines connected one after another in series with via-junctions of 10. However it is not encountered in a case connected by a few via-junctions, and the field solver used ordinarily for checking the abnormality would not predict it. The main cause of the resonance appeared around 7.5 GHz on the frequency response of the S-parameters of the PWB with plural transmission lines connected one after another in series by the via-junctions was investigated by the net work analyzer and an equivalent circuit model. And the characteristic impedance mismatches among the transmission lines was found out to be the main factor for this phenomenon.

Original languageEnglish
Title of host publicationICEPT-HDP 2011 Proceedings - 2011 International Conference on Electronic Packaging Technology and High Density Packaging
Pages618-622
Number of pages5
DOIs
StatePublished - 2011
Event2011 12th International Conference on Electronic Packaging Technology and High Density Packaging, ICEPT-HDP 2011 - Shanghai, China
Duration: 8 Aug 201111 Aug 2011

Publication series

NameICEPT-HDP 2011 Proceedings - 2011 International Conference on Electronic Packaging Technology and High Density Packaging

Conference

Conference2011 12th International Conference on Electronic Packaging Technology and High Density Packaging, ICEPT-HDP 2011
Country/TerritoryChina
CityShanghai
Period8/08/1111/08/11

Keywords

  • Discontinuity in PWB
  • Equivalent circuit model
  • Resonance
  • S-parameters
  • Transmission line
  • Via-junction

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