應用傅立葉轉換於天線和連接元件之時域分析

APPLICATION OF FOURIER TRANSFORM IN TIME-DOMAIN ANALYSIS FOR ANTENNA AND INTERCONNECTION

梁晉晧(Chin-Hao Liang)

指導教授 ： 黃啟芳

大同大學/電機資訊學院/通訊工程研究所/碩士(2009年)

摘要

這篇論文的第一章在說明時域跟頻域分析的優缺點。後面是在介紹數位視訊介面(DVI)和高解析多媒體界面(HDMI)兩種傳輸規格介面。第二章在介紹時域和頻域的轉換以及驗證。第三章是在講CST傳輸線模型的建立，以及對傳輸線的量測模擬分析。我們使用時域分析反射儀(TDR)量測傳輸線的阻抗和電磁模擬套裝軟體CST所計算的去做比較，然後將時域分析反射儀測量到的數據轉換到頻域上得到散射參數(S Parameters)，在和模擬的散射參數去做交叉比對 結果是很相似的。第四章實際測量傳輸線的skew的效應，也使用CST模擬分析單位長度的skew的效應，還有使用CST模擬分析每條絞線互相的crosstalk(串擾)的效應，還有近場的量測與模擬。
我們模擬和測量傳輸線的近場，發現近場輻射量非常的小，表示傳輸線隔離的效應非常的好。我們模擬和測量傳輸線的skew效應，發現兩條傳輸訊號的線延遲差非常的小，表示訊號的傳輸品質非常的好。我們模擬和測量傳輸線的串擾效應，發現互感效應非常的小，表示隔離線隔離的效應非常的好。

關鍵字

時域反射儀 ； 頻域

並列摘要

In this thesis, the first section is introduction of HDMI and DVI. HDMI and DVI is a high speed connector used in HDTV. The second part is to explain the theory of TDR (Time Domain Reflectometry) and the time to frequency domain theory. The third part is the comparison between simulation and measurement of HDMI and DVI cables. We use TDR (Time Domain Reflectometry) to measure impedances and S parameters of HDMI and DVI cables and use CST (electromagnetic simulation package) to simulate the impedances and S parameters of HDMI and DVI cables. We compare differential impedance and S parameters. The results are the same. The fourth part is analysis the characters of HDMI and DVI cables by Proximity field, skew and crosstalk of HDMI and DVI cables.
We measure and simulate of HDMI and DVI cables by proximity field with test fixture. We can observe the cable shielding is excellent and the cable radiation effect is very small. We measure and simulate of HDMI and DVI cables by skew analysis. We can observe skew effect is very small. We simulate of HDMI and DVI cables by crosstalk. We can observe the shield wrap can be effective to segregate the signal coupling to other wires.

並列關鍵字

TDR (Time Domain Reflectometry)

參考文獻

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