微型化雙頻混成耦合器

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姓名

林承運(Chen-Yun Lin) 查詢紙本館藏

畢業系所

電機工程學系

論文名稱

微型化雙頻混成耦合器
(Miniature Dual-Band Hybrid Couplers)

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摘要(中)

本論文以微型暨積體化雙頻被動電路為設計目標，提供較為簡單並能大幅縮小尺寸的電路設計方式。本論文將以雙頻橋式T線圈取代傳統橋式T線圈，而能將單頻電路轉換成雙頻電路，進而達成雙頻暨微型化的設計目標，並應用於兩種不同規格的雙頻枝幹耦合器。除此之外，也提出新式雙頻雙表現混成耦合器，使其低高頻分別具有180°與90°混成耦合器的頻率響應。上述的雙頻元件並以積體被動元件（IPD）與砷化鎵（GaAs）製程實現，驗證其電路效能，其中雙頻枝幹耦合器的操作頻率皆為2.45 GHz與5.5 GHz，在兩個操作頻率下的電氣尺寸分別約為0.018 λ0 × 0.011 λ0與0.040 λ0 × 0.024 λ0；而雙頻雙表現耦合器的操作頻率為2.45 GHz與5.5 GHz，在兩個操作頻率下的電氣尺寸分別約為0.025 λ0 × 0.025 λ0與0.056 λ0 × 0.055 λ0，電路面積皆小於既有文獻，驗證了雙頻橋式T線圈的確可以取代傳輸線，並且能夠大幅縮小被動電路的電路面積。除此之外，也可簡化雙頻或雙表現被動電路設計的複雜度。

摘要(英)

In this study, miniature integrated dual-band microwave passive circuits are proposed. It provides a simple design method for miniaturization and dual-band operation. Conventional bridged-T coil replacing transmission line for miniaturization merely deals with single-band. Therefore, dual-band bridged-T coil is used to replace conventional bridged-T coil to design not only miniature but also dual-band microwave passive circuits. Here, miniature dual-band branch-line coupler and dual-behavior hybrid are realized by using dual-band bridged-T coil in Integrated Passive Device (IPD) and Gallium Arsenide (GaAs) processes. First, miniature dual-band branch-line couplers are presented. Operating frequencies of proposed circuits are at 2.45 GHz and 5.5 GHz. The electrical size of proposed circuit are around 0.018 λ0 × 0.011 λ0 at 2.45 GHz and 0.040 λ0 × 0.024 λ0 at 5.5 GHz. Second, miniature dual-band dual-behavior hybrid is presented. Operating frequencies of proposed circuits are at 2.45 GHz and 5.5 GHz. The electrical size of proposed circuit are around 0.025 λ0 × 0.025 λ0 at 2.45 GHz and 0.056 λ0 × 0.055 λ0 at 5.5 GHz. All of dual-band microwave passive circuits mentioned previously are undersized than the existing literatures. A novel dual-behavior hybrid with distinct responses in two operating bands is also presented. It proves that dual-band bridged-T coil can replace the transmission line and miniaturize microwave passive circuit size. In addition, it can reduce the complexity of dual-band or dual-band dual-behavior microwave passive circuits.

關鍵字(中)

★ 微型化
★ 雙頻
★ 耦合器
★ 雙頻橋式T線圈

關鍵字(英)

★ Miniature
★ Dual-band
★ Couplers
★ Dual-band bridged-T coil

論文目次

論文摘要 I
Abstract II
誌謝 III
目錄 IV
圖形列表 VI
表格列表 XIX
第一章緒論 1
1.1 研究動機 1
1.2 文獻回顧 3
1.3 章節介紹 5
第二章雙頻橋式T線圈 6
2.1 傳統橋式T線圈等效傳輸線 6
2.1.1 電路架構與工作原理 6
2.1.2 設計範例 11
2.2 雙頻橋式T線圈等效傳輸線 13
2.2.1 電路架構與工作原理 13
2.2.2 設計範例 19
2.3 小結 22
第三章微型化雙頻枝幹耦合器 23
3.1 單頻枝幹耦合器 23
3.2 微型化雙頻枝幹耦合器 27
3.2.1 設計一：雙頻功率分配比為3 dB與3 dB 27
3.2.2 設計二：雙頻功率分配比為0 dB與3 dB 53
3.3 結果與討論 78
第四章微型化雙頻雙表現混成耦合器 83
4.1 應用簡介 83
4.2 電路架構與工作原理 84
4.3 實作與量測驗證 94
4.4 結果與討論 121
第五章結論 125
參考文獻 127

參考文獻

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指導教授

林祐生(Yo-Shen Lin)

審核日期

2018-1-29

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