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研究生:劉奕孝
研究生(外文):LIU, YI-XIAO
論文名稱:應用於第五代通訊技術之小型基地台天線設計
論文名稱(外文):Design of small base station antennas for fifth-generation communication technology
指導教授:陳華明陳華明引用關係林憶芳林憶芳引用關係
指導教授(外文):CHEN, HUA-MINGLIN, YI-FANG
口試委員:陳宏圖廖家德陳華明林憶芳
口試委員(外文):CHEN, HONG-TWULIAO, CHIA-TECHEN, HUA-MINGLIN, YI-FANG
口試日期:2021-07-30
學位類別:碩士
校院名稱:國立高雄科技大學
系所名稱:光電工程研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2021
畢業學年度:109
語文別:中文
論文頁數:85
中文關鍵詞:維瓦第天線非對稱PIFA天線雙路徑共振天線吸頂式結構小型基地台天線多輸入多輸出
外文關鍵詞:Vivardi antennaasymmetric pifa antennadual-path resonant antennaceiling-mounted structuresmall base stationmultiple input multiple output (MIMO)
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現今5G通訊技術開始盛行,代表著需要寬廣的室內涵蓋率、良好的通訊品質、低延遲以及多資料傳輸,皆為通訊企業想要達成的目標。
本論文提出兩款室內小型基地站天線設計,其中共振頻率包含了廣泛使用的Wi-Fi低頻段 (2400 MHz ~ 2484 MHz)與5G FR1 Band n77/n78/n79頻段(3300 MHz ~ 5000 MHz),以及現今5G通訊技術所使用的Wi-Fi高頻段 (5000 MHz ~ 7125 MHz) 形成三頻段共存之多天線系統設計,橫跨4G與5G的行動通訊頻段進行研究分析。
第一款小型基地台天線為雙面非對稱PIFA天線設計,整體尺寸120 × 120 × 25 mm3為共接地吸頂式結構。在這之中,巧妙運用單極天線耦合饋入,使雙面的天線結構可產生多重共振路徑特性,此外,在整體90度方位為Wi-Fi雙頻段的獨特式嵌入幾何結構設計,於整體斜向(phi) 45度角為5G FR1 Band n77/n78/n79與Wi-Fi高頻段的單支雙頻段設計。最後,在整體規劃上實現Wi-Fi低頻段、5G FR1 Band為4 × 4 MIMO以及Wi-Fi高頻段為8 × 8 MIMO配置。其整體增益與效率均為5.5 dBi及65%之間。
第二款小型基地台天線將沿用第一款部分結構進行改良,值得注意的是,第二款在設計上引用維瓦第天線的特殊結構來縮小整體尺寸,並以水平方向進行輻射,實現全方位場型涵蓋,有效解決訊號零點問題。整體尺寸95 × 95 × 24.8 mm3為共接地平放式結構。利用微帶線饋入激發,將在維瓦第天線上形成雙共振模態,除此之外,沿用第一款的嵌入式基板天線線路會將維瓦第天線視為接地平面,構成立體式共接地結構。又此款天線的三種頻段Wi-Fi雙頻段與5G FR1 Band n77/n78皆為4 × 4 MIMO配置,其整體增益與效率均為4.5 dBi及 63 %間。

Nowadays 5G communication technology is beginning to prevail, represents the need for wide indoor coverage, good communication quality, low latency, and multiple data transmission, these are the goals that communications companies want to achieve.
This paper proposes two indoor small base station antenna designs, the resonance frequency includes the widely used Wi-Fi low-frequency band (2400 MHz ~ 2484 MHz) and 5G FR1 Band n77/n78/n79 frequency band (3300 MHz ~ 5000 MHz), and the Wi-Fi high-frequency band (5000 MHz ~ 7125 MHz) used by the current 5G communication technology forms a multi-antenna system design with three frequency bands coexisting, research and analysis across 4G and 5G mobile communication frequency bands.

摘要…………………………………………………………………………………………………………i
ABSTRACT……………………………………………………………………………………………ii
致 謝…………………………………………………………………………………………………iii
目 錄……………………………………………………………………………………………………iv
表 目 錄………………………………………………………………………………………………v
圖 目 錄………………………………………………………………………………………….vi
第一章 序論……………………………………………………………………………………01
1.1 研究背景……………………………………………………………………01
1.2 研究目的……………………………………………………………………03
1.3 文獻導覽……………………………………………………………………04
1.4 論文題要……………………………………………………………………05
第二章 天線設計原理…………………………………………………………………06
2.1 前言………………………………………………………………………………06
2.2 半波長偶極天線原理與設計………………………………06
2.3 平面倒F天線………………………………………………………………09
2.4 維瓦第天線原理與設計…………………………………………12
2.5 分集技術………………………………………………………………………12
2.6 封包相關係數(ECC)說明………………………………………15
第三章 吸頂式基地台天線仰角輻射天線設計……………………17
3.1 前言…………………………………………………………………………………17
3.2 天線結構分析………………………………………………………………17
3.3 天線實驗與量測結果………………………………………………22
3.4 結論…………………………………………………………………………………51
第四章 平放式基地台天線水平輻射天線設計……………………52
4.1 前言…………………………………………………………………………………52
4.2 天線結構分析………………………………………………………………52
4.3 天線實驗與量測結果………………………………………………56
4.4 結論…………………………………………………………………………………79
第五章 結論與未來發展………………………………………………………………80
參考文獻………………………………………………………………………………………………82

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