研究生: |
吳明忠 Ming-chung Wu |
---|---|
論文名稱: |
連接系統的電氣特性之分析與量測 Analysis and Measurement of Electrical Characteristics of an Interconnection System |
指導教授: |
李維楨
Wei-chen Lee |
口試委員: |
陳亮光
Liang-kuang Chen 曾昭雄 Chao-Hsiung Tseng |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 機械工程系 Department of Mechanical Engineering |
論文出版年: | 2008 |
畢業學年度: | 96 |
語文別: | 中文 |
論文頁數: | 69 |
中文關鍵詞: | 阻抗 、回波損失 、介入損失 |
外文關鍵詞: | impedance, return loss, insertion loss |
相關次數: | 點閱:412 下載:1 |
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本論文探討連接器的電氣特性,包含阻抗、介入損失和回波損失。研究目的是以時域反射儀及網路分析儀量測的結果來了解電磁模擬軟體分析結果的準確性。
由實驗和分析結果的比較得知,在時域的部分,模擬及實際量測之差動阻抗吻合度佳;而頻域的部分,在介入損失方面,比較模擬及實際量測介入損失相對低點的位置及大小,整體趨勢相近吻合度高。在回波損失方面,比較模擬及實際量測回波損失的尖點位置及大小,其整體曲線的趨勢吻合度亦很高。另外本研究使用IConnect軟體換算時域反射儀所量到之電壓曲線得到回波損失曲線,和網路分析儀所量測之回波損失曲線作比較,得知使用IConnect軟體模擬回波損失,在0.5 ~ 3 GHZ的範圍內準確度甚高。最後針對修改連接器設計的分析結果得知,欲得到via附近較佳阻抗匹配的設計,則其結構強度就會降低,故這樣的修改並非可行。而對於antipad的研究,經由模擬分析及實際量測的結果得知,適當應用antipad確實能夠獲得較佳的阻抗匹配度。
由論文研究結果可以了解電磁模擬軟體所分析連接器電氣特性結果的準確度很高。因此開發連接器產品時,根據所設計的幾何結構和材料特性,使用電磁模擬軟體進行分析和修改直到符合規格,如此可以節省設計變更所衍生的成本。
The electrical characteristics of a connector, which include impedance, insertion loss, and return loss, can greatly affect its performance as the signal speed increases. The objective of this research is to understand the discrepancy between the simulation and experimental results, so that a more accurate prediction of the electrical characteristics of a connector can be made during the design phase.
It was discovered that in both the time and frequency domain the simulation results were consistent with the experimental results. Given these conclusions the simulation model was modified to improve the impedance mismatch with the connector. It was found that by properly designing the antipads the impedance mismatch can be reduced.
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