| Project/Area Number |
26289114
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Communication/Network engineering
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| Research Institution | University of Tsukuba |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
YOSHIHARA Ikuo 宮崎大学, 工学部, 名誉教授 (20322315)
KANAZAWA Kenji 筑波大学, システム情報系, 助教 (40707874)
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| Research Collaborator |
OHMOTO Kenichiro
KENMOTSU Kaori
YOKOSHIMA Naoki
AKUTSU Shun
OHDAIRA Tetsuya
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥12,350,000 (Direct Cost: ¥9,500,000、Indirect Cost: ¥2,850,000)
Fiscal Year 2016: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2015: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2014: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
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| Keywords | 信号品質 / 損失 / プリント基板 / 遺伝的アルゴリズム / 共鳴 / Signal Integrity / Singal Integrity / 信号損失 / 伝送線 / Genetic Algorithm |
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| Outline of Final Research Achievements |
Operation frequencies in personal computers and mobile devices have reached over GHz already. And it is necessary to increase the frequency furthermore in order to increase their performances. On the other hand, in the GHz domain, loss in the interconnections in printed circuit boards used in those devices increases as the frequency increases. And the loss increment decreases the signal integrity of digital signals propagating on the interconnections. The signal integrity reduction thus impedes the frequency increment.
The purpose of this research is to overcome the above problem by novel interconnection structures. We have applied segmental transmission line, which had proposed by us, to the interconnection structure and proposed a novel transmission design method based on the wave-reflection theory. And we have demonstrated their efficiency by measurements on prototypes as well as simulations.
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