臺灣博碩士論文加值系統

摘要
本論文提出使用基板集成波導技術設計分別操作於C波段（4-8 GHz）及X波段（8-12 GHz）之兩種天線元件，並且利用不同的設計技術達成高指向輻射特性。
第一項設計為應用於飛彈訊號傳輸之高指向性基板集成波導天線。該設計以微帶線饋入，並結合將細孔週期性排列成基板集成波導式號角天線結構，藉此達到輻射場型的指向性效果，再以金屬矩形寄生元件以及矩形槽孔兩種結構來輔助增強輻射場型之前後比（front-to-back ratio：F/B），以及抑制旁瓣與背瓣。為進行實驗與模擬驗證，乃將設計完成的天線與待測飛彈依量測環境所需實行等比例縮小化，縮小化之天線模擬與量測結果一致，皆擁有良好指向特性。除此，亦將此天線裝置在縮小化飛彈模型上，驗證了天線裝設在飛彈上仍有高指向特性。
第二項設計為雙層基板集成波導之高指向性天線。亦使用微帶線方式饋入，並結合雙層基板集成波導腔體限制背瓣強度，再於最上層銅箔上挖鑿矩形槽孔增強前後比。最後，利用夾層中的銅箔設計，使其主瓣強度集中；旁瓣強度減弱，進而達成高指向輻射特性。

Abstract

In this thesis, two antenna elements with the substrate-integrated-waveguide (SIW) structure were designed for use in the C-band (4-8 GHz) and X-band (8-12 GHz), and high directivity radiation characteristic was achieved from applying different design technologies to these designs as well.
The first design is a missile-mounted SIW antenna with high directivity for data transmission. The proposed antenna was fed by a microstrip line and designed based on a horn structure composed from periodic vias to achieve the effect of high directional radiation. Meanwhile, with use of both the parasitic rectangular element and the rectangular slot, the antenna’s front-to-back ratio (F/B) can be increased, whereas the side and back lobes are effectively suppressed. For measurement and validation, the scaled models of the SIW antenna and the missile were built. The measured results show the antenna has high directivity and which is in accordance with the simulation. Also, the result shows that the antenna still has high directivity when mounted on the missile.
The second design is a double-layer SIW antenna with high directivity. It is also fed by a microstrip line and composed from a double-layer structure to suppressed the side-lobe radiation. In addition, by dig rectangular slot on the upper portion of the antenna the value of front-to-back ratio can be increased. Finally, we further improved the directivity from adjusting the metal structure sited between the superstrate and the substrate.

目錄
中文摘要.........................................i
英文摘要........................................ii
誌謝...........................................iii
目錄............................................iv
表目錄..........................................vi
圖目錄..........................................vii
第一章 緒論.......................................1
1.1 研究動機.....................................1
1.2 文獻探討.....................................2
1.3 章節概述.....................................5
第二章 基板集成波導理論.............................7
2.1 簡介........................................7
2.2 金屬矩形波導理論..............................8
2.3 基板集成波導理論.............................12
2.4 號角基板集成波導理論..........................15
第三章 應用於飛彈訊號傳輸之高指向性基板集成波導天線設計...17
3.1 簡介.......................................17
3.2 天線設計....................................18
3.3 結構分析....................................20
3.4 量測結果....................................28
3.5 飛彈簡介....................................31
3.6 縮小化天線之量測結果...........................32
3.7 飛彈裝置天線之量測結果.........................35
第四章 高指向性雙層基板集成波導天線設計 ................38
4.1 簡介........................................38
4.2 天線設計.....................................39
4.3 結構分析.....................................41
4.4 量測結果.....................................49
第五章 結論.......................................51
參考文獻..........................................52
附件一............................................55
簡歷

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