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博碩士論文 etd-0703104-133038 詳細資訊
Title page for etd-0703104-133038
論文名稱
Title
新型編織碳纖維複合材料應用於2.5Gb/s光收發模組電磁屏蔽效應之研究
The Study of Electromagnetic Shielding Employing Woven Continuous Carbon Fiber Composites for 2.5Gb/s Transceiver Modules
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
75
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2004-06-21
繳交日期
Date of Submission
2004-07-03
關鍵字
Keywords
電磁屏蔽、光收發模組、碳纖維
shielding, transceiver module, carbon fiber
統計
Statistics
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The thesis/dissertation has been browsed 5645 times, has been downloaded 3844 times.
中文摘要
新型編織碳纖維複合材料具有質量輕、成本低等優點,並且在遠場量測中有良好的電磁屏蔽效率。本研究目的係以編織形式碳纖維(woven continuous carbon fiber, WCCF)複合材料為電磁屏蔽外殼,量測其在近場輻射及應用於2.5Gb/s光收發模組之電磁屏蔽效率(Shielding Effectiveness, SE) ,將WCCF以三種不同編織方式:平織、斜織及單一方向編織結構。在遠場量測結果中,WCCF斜織雙層結構其電磁屏蔽效率可高達80dB。而將此斜織結構作為2.5Gb/s光收發模組的塑膠外殼,在近場量測結果其電磁屏蔽效率可高達50dB。
針對WCCF複合材料、奈米碳球(nanoscale hollow carbon nanocapulses, HCNCs)複合材料、尼龍(Nylon)與碳纖維複合材料及液晶高分子(liquid crystal polymer, LCP)與碳纖維複合材料,比較其成本、重量及屏蔽效率等特性作比較,結果顯示WCCF複合材料有較低成本、較輕重量及較佳電磁屏蔽效率。
Abstract
A High electromagnetic shielding, light weight, low cost plastic package is developed by using a woven continuous carbon fiber (WCCF) epoxy composite. Three different weaving types of WCCF, plain、balanced twill and uni-direction structure, are fabricated for understanding the shielding property of the WCCF composites. By weaving the WCCF in a balanced twill structure with excellent conductive network, it shows that the SE can reach to about 80dB under plane-wave source measurement and about 50dB in the near-field source measurement.
By comparison of cost, weight, and shielding performance for optical transceiver modules fabricated by the housings of woven continuous carbon fiber, nanoscale hollow carbon nanocapulses (HCNCs) epoxy composites and nylon and liquid crystal polymer (LCP) with carbon fiber filler composite, the WCCF composites shows lower cost, light weight, and higher electromagnetic shielding than the other types of composites.
目次 Table of Contents
中文摘要 I
英文摘要 II
致謝 III
內容目錄 V
圖表目錄 VIII
第一章 導論 1
1.1 研究目的 1
1.2 文獻回顧 2
1.3 論文架構 3
第二章 電磁屏蔽於輻射理論基礎 4
2.1 電磁屏蔽理論 4
2.2 電磁波輻射理論 7
第三章 編織形式碳纖維複合材料與電磁屏蔽效率 10
3.1 編織形式碳纖維的製程與編織結構 10
3.2 屏蔽外殼之製作 12
3.3 電磁屏蔽效率之量測 14
3.3.1 實驗架構 14
3.3.2 量測系統與方法 15
3.4 實驗結果 22
第四章 奈米碳球複合材料與電磁屏蔽效率 28
4.1 奈米碳球複合材料 28
4.2 屏蔽試片與外殼之製作 31
4.3 遠場電磁屏蔽效率量之測 34
4.3.1 實驗架構 34
4.3.2 量測系統方法 35
4.3.3 等效電路模型 40
4.4 近場電磁屏蔽效率之量測 43
4.5 實驗結果 44
第五章 尼龍、液晶聚合物之碳纖維複合材料與電磁屏蔽效率 46
5.1 尼龍、液晶聚合物與碳纖維複合材料 46
5.2 遠場電磁屏蔽效率量測 48
5.3 近場電磁屏蔽效率之量測 49
5.4 實驗結果 50
第六章 結果與討論 53
6.1 整合分析比較 53
6.2 結論 58
6.3 未來方向 60
參考文獻 61
附錄一、常見產品設備的電磁波輻射頻段 63
附錄二、碳纖維的基本特性 64
參考文獻 References
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[3] Clayton R. Paul, “Introduction to Electromagnetic Compatibility,” A Wiley-interscience Publication, ch.11.pp632-664, 1992
[4] David M. Pozar,”Microwave and RF Wireless System,” John Wiley& Sons, INC., ch.2.pp29-67, 2000
[5] Henry W. Ott, “Noise Reduction Techniques in Electronic Systems,” A Wiley-interscience Publication, ch.6.pp159-202, 1988
[6] David K. Cheng, “Field and wave electromagnetic”. Reading, Mass. Addison Wesley, 1983
[7] 卓聖鵬, “最新天線工程-行動通信時代的天線技術”, 全華書局, 1998
[8] 洪文祺, ”新型編織碳纖維複合材料電磁屏蔽效應之研究” 國立中山大學碩士, 2003
[9] M.S. Sarto, S. Di Michele, P. Leerkamp, “Electromagnetic performance of innovative lightweight shields to reduce radiated emissions from PCBs “, IEEE Transactions on , Vol. 44 ,pp. 353 – 363, May. 2002
[10] T.L. Wu, W.S. Jou, W.C. Hung, C.H. Lee, C.W. Lin and W.H. Cheng, “High shielding effectiveness plastic package for 2.5Gbit/s optical transceiver module”, Electron. Lett., vol. 40, pp. 260-262, Feb. 2004
[11] KENDALL.F CASEY, member, IEEE, “Electromagnetic Shielding Behavior of Wire–Mesh Screens”, IEEE transactions of electromagnetic compatibility, vol. 30, No 3, 1988.
[12] “奈米科技專刊” ,工研院化工所與化工資訊月刊出版, 2002
[13] David M. Pozar, ”Microwave Engineering,” John Wiley& Sons, INC., ch.4.pp182-250, 1998
[14] T. L. Wu, W. S. Jou, S.G. Dai, and W. H. Cheng, ”Effective Electromagnetic Shielding of Plastic Packaging in Low-Cost Optical Transceiver Modules,” J. Lightwave Technology, vol. 21, pp. 1536 -1543, June. 2003.
[15] American Society for Testing and Materials, ”Annual book of ASTM satandards. Section 14 :General methods and instrumentation”, Philadelphia, Pa:American Society for Testing and Materials, c1997, ASTM D4935-89,pp442-450, 1997.
[16] Ferry F. Wilson, Mark T. MA, J. W. Adams, ”Techniques for measuring the electromagnetic shielding effectiveness of materials: part I: far field source simulation”, IEEE Trans. Electromagnetic Compatibility, Vol.30,No.3pp239-250,1989
[17] 戴傳家, “雷射收發模組電磁屏蔽之研究” 國立中山大學碩士, 2002
[18] 邱首凱, “塑膠複合材料電磁屏蔽效應之研究” 國立中山大學碩士, 2001
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