單頻和雙頻帶可重組式微波被動元件

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姓名

莊競輝(Jing-Hui Zhuang) 查詢紙本館藏

畢業系所

電機工程學系

論文名稱

單頻和雙頻帶可重組式微波被動元件
(Single- and Dual-Band Reconfigurable Microwave Passive Components)

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至系統瀏覽論文 (2025-10-21以後開放)

摘要(中)

本論文以可重組式微波被動元件為設計目標，首先，提出一個具有四種不同電路功能的可重組式微波被動電路，中心頻率設計於0.5 GHz。藉由控制二極體開關改變微帶線的連接方式，可切換成分支線耦合器、鼠競耦合器、帶通濾波器與帶拒濾波器等四種不同的功能，整體電路尺寸為 130.2 mm × 104.9 mm，電氣尺寸在中心頻率 0.5 GHz 下為 0.4089 λg × 0.3294 λg。
其次，使用橋式T線圈(Bridged-T Coil)取代微帶線以縮小尺寸，於切換開關的部分則改以電晶體實現，並於砷化鎵積體電路製程實現積體化可重組式微波被動元件，其操作中心頻率為10 GHz，可切換為分支線耦合器、帶通濾波器與帶拒濾波器三種不同電路功能。整體電路尺寸為 1.796 mm × 1.331 mm，電氣尺寸在中心頻率 10 GHz 下為 0.060 λ0 × 0.044 λ0。
因應多頻、多模的操作需求，接續並發展雙頻可重組式微波被動元件設計，採用雙頻橋式T線圈(Dual-Band Bridged-T coil)為基本組件，達成雙頻帶的分支線耦合器及雙頻帶通濾波器兩種功能。電路操作中心頻率為9.5及24 GHz，同樣使用砷化鎵積體電路製程實現，整體電路尺寸為 1.361 mm × 1.15 mm，電氣尺寸在9.5 GHz為 0.043 λ0 × 0.036 λ0，在24 GHz 則為 0.11 λ0 × 0.09 λ0。

摘要(英)

In this study, novel reconfigurable microwave passive components are proposed. First, a 0.5-GHz reconfigurable microwave circuit with four different circuit functions is presented. The four different functions are branch-line coupler, rat-race coupler, band-pass filter, and band-stop filter, which are achieved by using the p-i-n diode switches to change the interconnections of the microstrip lines. A design example in PCB is presented, and the circuit size is 130.2 mm × 104.9 mm, while the electrical size is around 0.4089 λg × 0.3294 λg at 0.5 GHz.
Secondly, a 10-GHz on-chip reconfigurable microwave passive component in GaAs pHEMT process is presented. By using bridged-T coils to replace the microstrip lines for circuit area reduction, and by using transistors to realize the switches, it can be switched to three different functions including branch-line coupler, band-pass filter, and band-stop filter. The circuit size is only 1.796 mm × 1.331 mm while the electrical size is around 0.060 λ0 × 0.044 λ0 at 10 GHz.
Driven by the demand of multi-frequency and multi-mode wireless communication apparatus, the design of a dual-band on-chip reconfigurable microwave passive component is also developed. Dual-band bridged-T coils are employed as the building blocks, and the functions of a dual-band branch-line coupler and a dual-band band-pass filter are achieved in a single circuit. The operating frequencies are set as 9.5 and 24 GHz, and it is also implemented using a GaAs pHEMT process. The circuit size is only 1.361 mm × 1.15 mm. The corresponding electrical size is around 0.043 λ0 × 0.036 λ0 at 9.5 GHz and 0.11 λ0 × 0.09 λ0 at 24 GHz.

關鍵字(中)

★ 可重組式
★ 微波被動元件
★ 分支線耦合器
★ 鼠競耦合器
★ 帶通濾波器
★ 帶拒濾波器

關鍵字(英)

★ Reconfigurable
★ Microwave Passive Components
★ branch-line coupler
★ rat-race coupler
★ band-pass filter
★ band-stop filter

論文目次

論文摘要 I
Abstract II
誌謝 III
目錄 IV
圖目錄 VI
表目錄 XII
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 4
第二章多功能可重組式微波被動元件 5
2.1 電路架構與工作原理 5
2.2 射頻切換開關設計 9
2.3 可重組式微波被動元件 17
2.3.1 功能一: 分支線耦合器 19
2.3.2 功能二: 鼠競耦合器 23
2.3.3 功能三: 帶通濾波器 29
2.3.4 功能四: 帶拒濾波器 31
2.4結果與討論 33
2.5 改版說明與電路架構 35
2.6 可重組式微波被動元件改版設計 37
2.6.1 功能一: 分支線耦合器改版設計 39
2.6.2 功能二: 鼠競耦合器改版設計 43
2.6.3 功能三: 帶通濾波器改版設計 49
2.6.4 功能四: 帶拒濾波器改版設計 51
2.7 小結與文獻比較 53
第三章積體化可重組式微波被動元件 57
3.1 電路基本架構及原理 57
3.2 電路尺寸微縮 60
3.2.1 橋式T線圈等效傳輸線 60
3.2.2 設計公式 62
3.2.3 電路佈局設計 66
3.3 電晶體開關設計 73
3.4 電路實作 76
3.4.1 功能一: 分支線耦合器 78
3.4.2 功能二: 帶通濾波器 83
3.4.3 功能三: 帶拒濾波器 84
3.5 製程變異分析與驗證 86
3.6 小結與文獻比較 89
第四章積體化雙頻可重組式微波被動元件 93
4.1 電路架構及原理 93
4.2 雙頻橋式T線圈設計 96
4.2.1 理論推導 96
4.2.2 電路佈局設計 98
4.3 電晶體開關設計 108
4.4 砷化鎵雙頻可重組式微波被動元件與實作 110
4.4.1 功能一: 雙頻分支線耦合器 112
4.4.2 功能二: 雙頻帶通濾波器 115
4.4.3結果與討論 116
4.5 電路改版設計 121
4.6 改版電路模擬與量測結果 125
4.6.1 功能一: 雙頻分支線耦合器 125
4.6.2 功能二: 雙頻帶通濾波器 129
4.7結論及文獻比較 130
第五章總結及未來展望 133
參考文獻 135

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指導教授

林祐生(Yo-Shen Lin)

審核日期

2020-10-22

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