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  • 學位論文

一般導體與超導體功率損耗之比較

Comparison of Power Dissipation in Normal Conductors and Superconductors

指導教授 : 江簡富

摘要


在論文中,我應用超導理論來估計高溫超導元件的特徵:如功率衰減與Q值。同時分析與比較個別由鋁跟YBCO薄膜組成的平行板波導、個別由銅跟YBCO厚膜所製成的矩形共振腔。 我也假設電子個數密度與頻率關係的模型來獲得更合理的YBCO平行板波導的衰減常數,特別是在操作頻率接近臨界值時。

關鍵字

超導體 功率損耗

並列摘要


In this thesis, basic theories of superconductivity are applied estimating the characteristics of high-temperature superconductor(HTS) components such as attenuation and Q factor. The properties of parallel-plate waveguide(PPWG) made of YBCO thin film and aluminum, rectilinear cacities made of YBCO thick film and copper are analyzed. The frequency-dependence of electron density is proposed to obtain reasonable attenuation of YBCO PPWG especially when the operating frequency is near critical frequency.

並列關鍵字

superconductor power dissipation

參考文獻


[1] J. Bardeen, L. N. Cooper, and J. R. Schrieffer, ``Theory of superconductivity,' Phys. Rev., vol.108, pp.1175-1204, Dec. 1957.
[2]R. R. Mansour,
``Microwave superconductivity,' IEEE Trans. Microwave Theory Theh., vol.50, no.3, pp.750-759, Mar. 2002.
[3]G. Tsuzuki, M. Suzuki, and N. Sakakibara,
``Superconducting filter for IMT-2000 band,' IEEE Trans. Microwave Theory Tech., vol.48, no.12, pp.2519-2525, Dec. 2000.

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