臺灣博碩士論文加值系統

在本篇論文中，我們針對頂層載有橫向金屬帶線，中間層為介質層，且底層由金屬來當作接地的平面部分反射面天線結構進行分析，利用漸近型負載邊界條件，結合部分反射面(PRS)天線多重反射原理，推導出此結構的部分反射相位，進而分析出所需的波束角度。使用商用數值軟體 MATLAB 分析此結構的介電系數、頻率與高度，所得出的的部分反射相位，並使用商用模擬軟體 CST Microwave Studio 模擬出此結構的反射相位圖與遠場場型主波辦角度，接著以同樣原理將此結構轉換為圓柱體，模擬產生之結果互相比對此方法的可行性與準確性。

layer is PEC ground, which is analyzed by using asymptotic strip boundary conditions and is derived from the principle of multiple reflections of Partially Reflective Surface(PRS), we can obtain the reflection phase of this structure, and then analyze the main beam angles. The commercial numerical software MATLAB is used to analyze the dielectric constant, frequency and height of this structure, then we can obtain the reflection phase. using the commercial simulation software CST Microwave Studio to simulate the reflection phase diagram of this structure and the main lobe beam angle of the far-field pattern. Then turn this structure into a cylinder with the same principle, and the result show that the method has high efficiency and qualified accuracy.

中文摘要..................................................i
Abstract.................................................ii
誌謝.....................................................iii
Contents.................................................iv
List of figures..........................................v
Chapter 1. Introduction .................................1
Chapter 2. Theory and Formulation........................3
2.1 Structure of the planar Partially Reflective Surface .3
2.2 Structure of the cylindrical Partially Reflective Surface ..........................................................4
2.3 principle of multiple reflections.....................5
2.4 Asymptotic strip boundary conditions..................8
2.4.1 Vector potential for TMz and TEz....................9
2.5. Reflection phase analyze.............................16
Chapter 3. Simulation and Results.........................27
3.1The Planar PRS Antenna.................................27
3.1.1 Main beam angle θ2 = 30°of the Planar PRS Antenna ..27
3.1.2 Main beam angle θ2 = 45° of the Planar PRS Antenna..29
3.1.3 Main beam angle θ2 = 60° of the Planar PRS Antenna..31
3.2The Cylindrical PRS Antenna............................33
3.2.1Main beam angle θ2 = 30° of the Cylindrical Antenna..33
3.2.2 Main beam angle θ2 = 45° of the Cylindrical Antenna.36
Chapter 4. Conclusion.....................................38
References................................................39

[1]T. Han, C. Liu, Q. Li and Y. Zhang, "Millimeter-Wave High-Gain Substrate Integrated Multi-Slot Antenna Array with A Low Cross Polarization Level," 2020 International Conference on Microwave and Millimeter Wave Technology (ICMMT), 2020, pp. 1-3.
[2]Y. Al-Alem and A. A. Kishk, "Highly Efficient Unpackaged 60 GHz Planar Antenna Array," IEEE Access, vol. 7, pp. 19033-19040, 2019.
[3]Z. Briqech, A. R. Sebak, and T. A. Denidni, "High Efficiency 60-GHz Printed Yagi Antenna Array," IEEE Antennas and Wireless Propagation Letters, vol. 12, pp. 1224-1227, 2013.
[4]E. H. Mujammami and A. Sebak, "A High Gain Broadband Quasi-Yagi Dielectric Lens Antenna for 5G and Millimeter Wave Applications," 2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, 2019, pp. 1911-1912.
[5]G. V. Trentini, "Partially reflecting sheet arrays," in IRE Transactions on Antennas and Propagation, vol. 4, no. 4, pp. 666-671, October 1956, doi: 10.1109/TAP.1956.1144455.
[6]F. Di, S. Zheng, N. Zhou, L. Kang and M. W. Niaz, "A Beam Steerable Resonant Cavity Antenna Based on Tunable Partially Reflective Surface," 2020 14th European Conference on Antennas and Propagation (EuCAP), 2020, pp. 1-3.
[7]M. Hajj, R. Chantalat, M. S. Toubet and B. Jecko,"Designing a partially reflective surface for tri-band.
[8]sectoral antennas," 2012 6th European Conference on Antennas and Propagation (EUCAP), 2012, pp. 2895-2899.
[9]Chaabane, F. Djahli, H. Attia and T. A. Denidni, "Antenna radiation bandwidth broadening using wideband double-layer partially reflective surfaces," 2016 17th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM), 2016, pp. 1-2.
[10] L. Ji, H. Zhu, P. Qin and Y. J. Guo, "Broadband partially reflective surface antenna with tapered corrugated ground," 2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2017, pp. 509-510.
[11]H. -P. Liao and S. -Y. Chen, "Bandwidth and Gain Enhancement of CPW-Fed Slot Antenna Using A Partially Reflective Surface Formed by Two-Step Tapered Dipole Unit Cells," 2019 IEEE Asia-Pacific Microwave Conference (APMC), 2019, pp. 1449-1451.
[12]A. Krauss, H. Bayer, R. Stephan and M. A. Hein, "A single Ka-band antenna aperture for TX and RX operation applying a dual-layer partially reflective surface," 2015 9th European Conference on Antennas and Propagation (EuCAP), 2015, pp. 1-5.