臺灣博碩士論文加值系統

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。

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.

Abstract i

Table of Contents iii

List of Figures iv

1. Introduction 1
1.1 HTS Thin-Film Planar Filter 2
1.2 HTS Thick-Film Coated Filter 2

2. Basic Theories of Superconductivity 4
2.1 First London Equation 4
2.2 Second London Equation 6
2.3 Two-Fluid Model 8

3. Parallel-Plate Waveguide 12

4. Rectilinear Cavity 19
4.1 Normal Conductor Cavity 19
4.2 Superconductor Cavity 24

5. Conclusions 31

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