臺灣博碩士論文加值系統

本論文提出了兩種架構的設計流程與實現，第一種架構為二維龍伯透鏡波束成型電路之韋瓦第圓柱陣列天線；第二種架構為二維龍伯透鏡波束成型電路之近場聚焦陣列天線。分別藉由精準的設計陣列天線、功率分配器、近場聚焦功率分配器、龍伯透鏡波束成型電路與龍伯透鏡近場聚焦波束成型電路來完成上述兩種架構。第一種架構可在涵蓋角度內進行波束掃描；第二種架構則於特定距離產生近場聚焦並可水平切換控制。兩種架構均成功於設計理論基礎下完成電磁模擬與實測驗證。在模擬部分，使用Ansys HFSS電磁模擬軟體去計算天線的S參數與輻射場型，實測以向量網路分析儀量測S參數，並在超寬頻無反射實驗室進行幅射場型驗證。

This paper presents the design process and realize two architectures. The first architecture is multi-beam radiations from circular periodic array of vivaldi antennas excited by an integrated 2-D luneburg lens beamforming network, and the second architecture is 2-D luneburg lens beamforming network for planar phased array of antennas to radiate near-field focused multi-beams. In the first architecture, it can scan within the coverage angle, the second architecture can focus at a specific distance in near-field and horizontal switching the focus point. To accomplish this design, will need passive components including the antenna array, power divider, near-field focused power divider, luneburg lens beamforming network and near-field focused luneburg lens beamforming network. We use the Ansys HFSS electromagnetic simulation software to calculate the S-parameter and radiation pattern. The S-parameter is measured by the vector network analyzer, and verifiy the radiation pattern by the ultra-wideband non-reflective laboratory.

書名頁 i
論文口試委員審定書 ii
中文摘要 iii
英文摘要 iv
誌謝 v
目錄 vi
表目錄 viii
圖目錄 ix
第一章 緒論 1
1.1 研究動機 1
1.2 文獻探討 1
1.3 章節介紹 3
第二章 陣列天線設計與分析 4
2.1 概述 4
2.2 陣列天線基本原理 5
2.2.1 二維陣列天線 8
2.2.2 聚焦陣列天線 9
2.3 功率分配器基本原理 11
2.3.1 威爾京生功率分配器 12
2.3.2 T型功率分配器 13
2.4 一分八T型功率分配器設計與分析 15
2.5 陣列天線設計與分析 23
2.5.1 概述 23
2.5.2 TSA基本天線單元設計介紹 23
2.5.3 韋瓦第陣列天線設計 25
2.5.4 近場聚焦陣列天線設計 36
第三章 龍伯透鏡波束成型電路設計與分析 42
3.1 龍伯透鏡概述 42
3.2 龍伯透鏡波束成型電路 49
3.2.1 龍伯透鏡波束成型電路架構 49
3.2.2 龍伯透鏡波束成型電路理論分析 49
3.2.3 龍伯透鏡波束成型電路電磁模擬與分析 52
3.3 龍伯透鏡近場聚焦波束成型電路 63
3.3.1 龍伯透鏡近場聚焦波束成型電路架構 63
3.3.2 龍伯透鏡近場聚焦波束成型電路理論 63
3.3.3 龍伯透鏡近場聚焦波束成型電路電磁模擬與分析 70
第四章 陣列天線與龍伯透鏡波束成型電路整合及量測 80
4.1 龍伯透鏡波束成型電路之圓柱陣列天線 81
4.2 龍伯透鏡波束成型電路之近場聚焦陣列天線 88
第五章 結論 95
參考文獻 97

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