臺灣博碩士論文加值系統

本論文的研究主要為Sub-6GHz 之基站天線設計，操作頻段均於3300 MHz ~ 3600 MHz，可應用於LTE/Sub-6GHz Band42與n78，橫跨第四代與第五代行動通訊頻段。其天線單元設計理念為：利用天線共振天線之雙共振的原理設計而成，透過此特性使增益疊加，因此複合式共振天線本身可擁有高增益之特性，並加入反射板將增益提高至9 dBi 。
第二章為利用第一章所提出的天線單元，進行陣列排列，而饋入網路採用串聯式分配並搭配相移線製造相位差使波束偏移，以解決置放於高處的基地台所需的傾角，並降低安裝上的繁瑣步驟，當中波束傾角約為10度，整體饋入網路與激發源可印刷於同一片FR4玻璃纖維板之上，有效縮短製造流程並降低成本，附帶將整體結構縮小，將空間有效利用避免不必要的浪費。
第三章主要針對以往陣列皆為一維與二維線性的排列，而這樣的排列下如今已出現瓶頸，比如無法有效將旁波瓣抑制，而為了突破以往，試著將仿生技術套用到陣列中並觀察其特性，意外的發現運用費式數列的排列下，其旁波瓣將有效的降低，而此方式運用簡單的排列型式和不需額外加入其它結構的特點，突破以往的瓶頸，若能運用於雷達或基地台頗具實用性。

The main objective of this thesis design of the base antenna for Sub-6GHz. The operating frequency bands are all from 3300 MHz to 3600 MHz. It can be covering LTE/Sub-6GHz Band42 or n78, spanning the fourth and fifth generation mobile communication specification. The design of the antenna element is designed by the principle of double resonance of the antenna resonant antenna. The gain characteristics of this dielectric stack, which may itself be a composite resonant antenna has a high gain characteristic, the reflection plate and added to 9 dBi gain increase.
The second section is to use the antenna element proposed in the first chapter for array arrangement, and the feed network is arranged in series with its phase shift line to solve the tilt angle required for the base station placed at a high place, and Reduce the cumbersome steps in the installation, where the beam angle is about 10 degrees, the overall feed network and excitation source can be printed on the same FR4 fiberglass board, effectively shortening the manufacturing process and reducing costs, with the overall structure reduced, Effective use of space avoids unnecessary waste.
The third chapter mainly focuses on the array of one-dimensional and two-dimensional arrays. In this way, there are bottlenecks in the array, and it is impossible to effectively suppress the side lobes. In order to break through the past, the bionic technology is applied to the array and observed. Its characteristics, the unexpected discovery, using the arrangement of the Fibonacci series, its side-wave operation will be effectively reduced, and this method uses a simple arrangement type and does not need to add additional structure features, breaking through the previous bottleneck, if it can be applied to The radar or base station is quite visible.

摘要 i
ABSTRACT ii
誌 謝 iii
目錄 iv
表目錄 v
圖目錄 vi
第一章 序論 vi
1.1 研究背景 1
1.2 研究目的 3
1.3 文獻導覽 4
1.4 論文題要 4
第二章 高增益複合式共振天線設計 6
2.1 前言 6
2.2 天線設計原理與結構 6
2.3 天線實驗與量測結果 11
2.4 天線結構變數與探討 21
2.5 結論 38
第三章 複合式共振大型基地台設計 39
3.1 前言 39
3.2 天線設計原理與結構 40
3.3 天線實驗與量測結果 43
3.4 結論 48
第四章 費式陣列天線 49
4.1 前言 49
4.2 陣列設計原理與結構 52
4.3 陣列實驗與結果 56
4.4 陣列結構比較 68
4.5 結論 75
第五章 結論與未來發展 76
參考文獻 78

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