Analysis of Electrical Characteristics and Electromagnetic Radiation of Industrial Signal Transmission Lines
碩士 === 國立成功大學 === 電機工程學系 === 104 === 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...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2016
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| Online Access: | http://ndltd.ncl.edu.tw/handle/898xwq |
| Summary: | 碩士 === 國立成功大學 === 電機工程學系 === 104 === 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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