臺灣博碩士論文加值系統

本論文提出應用於螢幕高佔比筆記型電腦多天線設計，由於近年來大多數消費者偏好具有大螢幕的行動裝置，因此許多業者紛紛推出具有高螢幕佔比、窄邊框設計的筆記型電腦，使其顯示比例放大又可縮小機身尺寸，但這種設計往往會使天線在擺放時，因空間的限制更多導致設計不易，取而代之的轉往鍵盤周圍設計，但由於複雜的金屬環境以及手部的干擾，更是讓天線的效率降低效果不彰，因此本文提出兩款應用於螢幕上緣窄邊框處設計，剖面高度均低於 2.5 mm，天線具有涵蓋多頻操作特性，天線操作頻段：Sub-6 GHz n78 (3300 ~ 3800 MHz)；n79(4400 ~5000 MHz)；WLAN 2.45GHz (2400 ~ 2500 MHz)；WLAN 5GHz-WIFI 6E(5150 ~ 7125 MHz)，可應用於 WLAN 頻段且結合新世代 5G 通訊頻段。
第一款天線為具低姿態之耦合式環型筆電天線設計，天線設計在螢幕上緣，透過環型天線設計出雙邊雙模態路徑，且搭配匹配網路微調阻抗增加頻寬，操作頻寬涵蓋 Sub-6 GHz n78 頻段及 n79 頻段；第二款天線為彎折結構之倒 F 型筆電天線設計，應用空間於螢幕上緣兩側，透過倒 F 型天線多路徑的特性共振多個模態，並透過彎折結構使剖面高度降低，其操作頻寬涵蓋 WLAN 2.45 GHz、WLAN 5 GHz以及 WIFI 6E 規範擴頻頻帶。
最後天線針對擺放位置進行延伸探討，探討 MIMO 系統中之重要參數 (隔離度、ECC)。

In this study, the multi-antenna designs are proposed for a high-ratio screen laptop computer. In recent years, most consumers prefer mobile devices with large screen display, many companies have introduced designs with large screens with high ratio screen and narrow bezels to make the display scale up. but, this design makes the antenna more limited in space and not easy to design. Instead, it is designed around the keyboard. Due to the complex metal environment and hand interference, the efficiency of the antenna is reduced and lower. Therefore, two designs are proposed to be applied to the upper edge of the screen, and the antenna characteristics cover multi-frequency operation. The antenna operating frequency band: Sub-6 GHz n78 (3300 ~ 3800 MHz); N79 (4400 ~ 5000 MHz); WLAN 2.45 GHz (2400 ~ 2500 MHz); WLAN 5 GHz-WIFI 6E (5150 ~ 7125 MHz), which can be applied to the WLAN frequency band and combined with the new generation 5G communication frequency band.
The first antenna is a low-profile coupled loop type laptop antenna design.The antenna is designed on the upper edge of the screen. A dual-mode path is designed through the loop antenna, and the matching network is used to tune the impedance to increase the bandwidth and the operating frequency. Widely covers the Sub-6 GHz n78 and n79 bands; the second antenna is an Inverted-F laptop antenna with a bending structure. The application space is on both sides of the upper edge of the screen. It resonates multiple modes through the multipath characteristics of the Inverted-F antenna, and through the bending structure to be low profile, its operating bandwidth covers WLAN 2.45 GHz, WLAN 5 GHz, and WIFI 6E specification increase frequency band.
Finally, an extended discussion on the placement of the antenna is carried out to discuss the parameters (such as isolation and ECC) in the MIMO system.

中文摘要 I
Abstract II
誌謝 III
目錄 IV
圖目錄 V
表目錄 VII
第1章 序論 1
1.1 研究背景 1
1.2 研究目的 2
1.3 文獻導覽 3
1.4 論文提要 4
第2章 具低姿態之耦合式環型筆電天線設計 5
2.1 前言 5
2.2 天線設計原理與結構 6
2.3 天線實驗與量測結果 9
2.4 具低姿態之耦合式環型筆電天線之多天線性能分析 23
2.5 結論 27
第3章 彎折結構之倒F型筆電天線設計 28
3.1 前言 28
3.2 天線設計原理與結構 29
3.3 天線實驗與量測結果 32
3.4 彎折結構之倒F型筆電天線之多天線擺放與性能分析 44
3.5 結論 50
第4章 結論與未來發展 51
參考文獻 52

 

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