臺灣博碩士論文加值系統

本論文提出三款應用於 LTE 700頻帶之小型化Dongle天線設計，內容將敘述由一開始的單輸入單輸出系統(SISO)小型化天線設計，進階成提升傳輸速度與容量的多輸入多輸出系統(MIMO)，讓LTE能夠更便利的被使用。除了通訊效能外，小型化也是本論文設計的要點，使得天線在應用上能夠更有效的利用攜帶式設備空間。
第一款天線採用單極天線形式，天線之輻射面積為 ，在較小的輻射面積下利用蜿蜒的架構，且透過貫孔至背面延伸路徑長度。讓天線在較小的面積下可以達到LTE 700頻帶，整體尺寸為 ，適合應用於無限收發器上之元件。
第二款為兩對稱的第一款天線設計成的MIMO系統，利用原有的設計作為延伸，在整體 的尺寸內，在地面上製造槽孔使其產生隔離度，達到良好得隔離效果。
在經過兩款Dongle天線設計後，最後再針對此兩款天線對於實際應用上，連接筆記型電腦或者平板時，結合較大的接地面之影響。在天線尾端設計一接地用T型結構，並連接三種不同尺寸的地面，再與原先之模擬結果互相比對探討，了解實際運用之差異性。

This paper presents two designs of small Dongle antennas for LTE 700 band. Antenna design consists of a single-input single-output (SISO) system is changed to a multi-input multi-output (MIMO) system, improved transmission speed and capacity. Then, LTE can be more convenient to be used. In addition to communications performance, miniaturization is the paper design main, so that the antenna can be more effective to be used in a portable device.
In first paragraph, an antenna uses a monopole antenna that the radiation area of the antenna is . Smaller radiation area use meandering structure, and extends through the through-hole to the back path. In the small area of the antenna conforms LTE 700 band. Overall size is that adapted to be used in the wireless transceiver.
The second paragraph is an extension of the first paragraph antenna design. Antenna is designed to be symmetrical MIMO system. Overall size is . Architecture on the ground produces isolation that achieves good results.
After two Dongle antennas design, practical applications such as connecting laptop or tablet, observed the effect of connecting the larger ground. Design a T-type structure at antenna trailing end and connect nearly 13 inches of the ground. The comparison of the results with the original will be discussed and investigated.

摘 要 I
ABSTRACT II
致　　 謝 III
目次 IV
圖目錄 V
表目錄 VII
第一章 序 論 1
1.1研究動機 1
1.2文獻導覽 3
1.3論文提要 4
第二章 應用於LTE之單極天線 5
2.1概述 5
2.2天線設計 6
2.3天線實驗結果討論與分析 9
第三章 應用於LTE之MIMO天線設計 20
3.1概述 20
3.2天線設計 21
3.3天線實驗結果討論與分析 25
第四章 各天線應用於接地面探討 42
4.1概述 42
4.2連結金屬面相關設計 43
4.3連結金屬面相關實驗結果討論與分析 45
第五章 結論 49
參考文獻 51

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