現今電子產業講求高頻、高資料傳輸，因此需要多通道的傳輸線設計，但在產業上還需要考慮信號損耗，以及不同通道的信號線長度不一樣而造成時間延遲不一致的問題。本論文分析微帶線、共平面以及背接金屬共平面三種傳輸線結構，探討信號線厚度對信號損耗的影響，以及信號線以彎曲型蛇線作為時間補償，這種作法是否有達到預期的效果，另外探討蛇線結構是否具有等效傳輸線的特性。經過HFSS和ADS模擬分析結果顯示，金屬信號線厚度增加，電磁輻射損耗隨著頻率呈指數型上升，材料損耗則是隨著頻率增加而呈一拋物線型先升後降，並在某一頻率存在最大值。電磁輻射損耗和材料損耗合計為整體損耗，整體損耗隨著基板介電係數增加而增加，低頻時，材料損耗所占比重較多，高頻則是電磁輻射損耗比重較多，而產業的工作頻率為MHz，屬於低頻，因此增加信號線厚度有助於信號傳輸損耗的改善。蛇線方面，其路徑長度與直線結構長度取一致，其時間延遲並不相等。蛇線結構視為傳輸線的條件必須在高頻的時候，才具有固定的等效特徵阻抗及相速度，其等效相速度受蛇線的波形波幅、波長影響，但等效特徵阻抗則大致維持一定值。

Electronic products have been constantly progressing toward high frequency, high speed and multiple signal-transmission-lines. Signal degradation in high frequencies and inconsistent time delays for unequal signal path lengths may occur. In this study, the effect of the thickness of transmission lines on signal degradation and that of winding lines on time compensation were demonstrated. The results show that electromagnetic radiation loss increases with the thickness of signal lines while the material loss decreases with the thickness. Electromagnetic radiation loss increases exponentially with frequency, while material loss shows a parabolic curve, first upward then downward. Electromagnetic radiation loss dominates material loss for high frequency while material loss dominates for low frequency. The time delay of winding lines is not the same as that of a straight transmission. The winding lines operating at high frequency can be treated as equivalent transmission lines for which there exist steady characteristic impedance and phase velocity. The equivalent phase velocity of winding lines is lower than that of straight lines and depends on the spatial amplitude and wavelength of the winding lines. However, the equivalent characteristic impedance hardly depends on the spatial amplitude and wavelength.

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