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論文名稱 Title |
暫態電磁波在平面介面之折射與反射效應 Reflection and refraction of transient electromagnetic wave on a flat surface |
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系所名稱 Department |
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畢業學年期 Year, semester |
語文別 Language |
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學位類別 Degree |
頁數 Number of pages |
49 |
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研究生 Author |
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指導教授 Advisor |
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召集委員 Convenor |
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口試委員 Advisory Committee |
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口試日期 Date of Exam |
2012-07-20 |
繳交日期 Date of Submission |
2012-08-30 |
關鍵字 Keywords |
折射、馬克斯威爾方程式、反射、電磁波、拉普拉斯轉換 ILHI`s, electromagnetic wave, reflection, refraction, Maxwell`s equation |
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統計 Statistics |
本論文已被瀏覽 5665 次,被下載 317 次 The thesis/dissertation has been browsed 5665 times, has been downloaded 317 times. |
中文摘要 |
本研究探討電磁波斜射進入兩種不同介質內部,電磁波的折射與反射在介質表面以及介質內部所造成的影響。 電磁波的計算可由馬克斯威爾方程式得知。欲得馬克斯威爾方程式的解,可分成兩種情況,一種是將μ、ε、σ視為常數,另一種則是將μ、ε、σ視為變數。若令μ、ε、σ為常數,可使得馬克斯威爾方程式轉換為無源的波方程式,再利用D`Alembertian方程式、Helmhotz方程式[1]簡化方程式,拉普拉斯轉換(ILHI`s)[2]或是傅立葉轉換(FFT)[3]計算求得其解。 若μ、ε、σ不為常數,就可以將馬克斯威爾方程式簡化為有源的波方程式,設定吸收邊界條件、網格,利用有限元素分析,即可求得其解,進而模擬電磁波的作用。 再利用ILHI`s [4]得到暫態平面波斜射進入不同介質的結果,並且用此結果,將兩種解法互相加以驗證。 |
Abstract |
The problem is effect of electromagnetic wave. When electromagnetic wave obliquely transmitted through two different medias ,electromagnetic wave undergoes reflection and refraction at the interface and inside the media. Computation of electromagnetic wave is well known by Maxwell`s equation. There are two cases solving questions. One is constant of μ、ε、σ.Another is variable of μ、ε、σ. In case one, use D`Alembertian equation and Helmholtz equation transforming Maxwell`s equation. And solve by ILHI`s(incomplete Lips-chitz-Hankel integrals) and FFT(fast Fourier transform). In case two,if μ、ε、σ are variables ,we can simplify Maxwell`s equation. It is similar to wave equation with source. We use Finite Element Method(FEM) getting Numerical solution by setting absorbing boundary and mesh. Using results by ILHI`s would get exact solution obliquely incident on two medias. Proof numerical solution by exact solution. |
目次 Table of Contents |
摘要 i Abstract ii 目錄 iii 符號說明 v 圖次 vi 第一章 緒論 1 1-1前言 1 1-2研究動機及目的 3 1-3文獻回顧 4 第二章 理論分析 5 2-1 Maxwell equation 5 2-2電磁波的分類 7 2-3 μ、ε、σ為常數(無源的波方程式) 9 2-4 μ、ε、σ不為常數(有源的波方程式) 13 2-4-1 統御方程式 13 2-4-2吸收邊界條件 15 2-4-3 邊界設定以及網格設定 18 2-4-4 μ、ε、σ條件設定 20 第三章 實驗方法以及驗證成果 22 3-1 入射條件與初始條件設定 22 3-2 驗證成果 24 3-2-1吸收邊界條件 24 3-2-2 有源的波方程式與無源的波方程式的驗證 27 第四章結論與未來展望 32 參考文獻 34 附錄一(摘錄自Handbook of Mathematical Functions with Formulas,Graphs,and Mathematical Tables中 的 Table25.4) 36 附錄二(摘錄自An accurate and efficient analysis for transient plane waves obliquely incident on a conductive half space (TM case) ) 37 |
參考文獻 References |
[1] M. H. Nayfeh and M. K. Brussel, Electricity and magnetism: Wiley, 1985. [2] J. A. Stratton, Electromagnetic theory vol. 33: Wiley-IEEE Press, 2007. [3] T. Papazoglou, "Transmission of a transient electromagnetic plane wave into a lossy half‐space," Journal of Applied Physics, vol. 46, pp. 3333-3341, 1975. [4] P. Hsueh-Yuan, S. L. Dvorak, and D. G. Dudley, "An accurate and efficient analysis for transient plane waves obliquely incident on a conductive half space (TM case)," Antennas and Propagation, IEEE Transactions on, vol. 44, pp. 925-932, 1996. [5] D. Dudley, T. Papazoglou, and R. White, "On the interaction of a transient electromagnetic plane wave and a lossy half‐space," Journal of Applied Physics, vol. 45, pp. 1171-1175, 1974. [6] P. Hsueh-Yuan, S. L. Dvorak, and D. G. Dudley, "An accurate and efficient analysis for transient plane waves obliquely incident on a conductive half space (TE case)," Antennas and Propagation, IEEE Transactions on, vol. 44, pp. 918-924, 1996. [7] H. P. Hsu, Applied vector analysis, 1st ed. San Diego: Harcourt Brace Jovanovich, 1984. [8] K. Yee, "Numerical solution of initial boundary value problems involving Maxwell's equations in isotropic media," Antennas and Propagation, IEEE Transactions on, vol. 14, pp. 302-307, 1966. [9] S. L. Dvorak and E. F. Kuester, "Numerical computation of the incomplete Lipschitz-Hankel integral Je0 (a, z)," Journal of Computational Physics, vol. 87, pp. 301-327, 1990. [10] M. Abramowitz and I. A. Stegun, Handbook of mathematical functions with formulas, graphs, and mathematical tables vol. 55: Dover publications, 1964. [11] B. Engquist and A. Majda, "Absorbing boundary conditions for numerical simulation of waves," Proceedings of the National Academy of Sciences, vol. 74, p. 1765, 1977. |
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