微型化毫米波雙頻分支線耦合器

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姓名

李孟芸(Meng-Yun Li) 查詢紙本館藏

畢業系所

電機工程學系

論文名稱

微型化毫米波雙頻分支線耦合器
(Miniaturized Millimeter-Wave Dual-Band Branch-Line Coupler)

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至系統瀏覽論文 (2029-7-23以後開放)

摘要(中)

本論文以微型化毫米波雙頻分支線耦合器為研究目標，設計上使用雙頻橋式T線圈(Bridged-T Coil, BTC)取代傳輸線，同時達到電路尺寸微型化與雙頻操作的效果，並且建構加入導體損耗與介質損耗之有損橋式T線圈模型，以分析雙頻橋式T線圈各元件的損耗。
首先，以WIPD製程實現sub-6GHz頻段的雙頻分支線耦合器，以串接雙頻橋式T線圈取代傳輸線，實現兩個操作頻率具同相位輸出之雙頻分支線耦合器，其電路面積為4mm × 3mm，中心頻率分別為1.85GHz與5.8GHz，在中心頻率之電氣尺寸分別為0.02λ0 × 0.02λ0與0.08λ0 × 0.06λ0。接著將操作頻率提升至毫米波頻段，分別以WIPD製程與90nm CMOS製程實現雙頻分支線耦合器，以WIPD製程實現之18.7/38.5GHz雙頻分支線耦合器，其電路面積為1.5mm × 1.4mm，在中心頻率之電氣尺寸分別為0.09λ0 × 0.08λ0與0.19λ0 × 0.18λ0。以90nm CMOS製程實現之18.7/38GHz雙頻分支線耦合器，其電路面積為0.5mm × 0.5mm，在中心頻率之電氣尺寸分別為0.03λ0 × 0.03λ0與0.07λ0 × 0.07λ0。
上述實作電路成功驗證將雙頻橋式T線圈用於毫米波頻段雙頻元件設計的可行性。

摘要(英)

In this thesis, miniaturized of millimeter wave dual-band branch line couplers are proposed. By replacing the transmission lines in a conventional branch-line coupler with bridged-T coils, the circuit size reduction and dual-band operation can be achieved simultaneously. Additionally, a lossy bridged-T coil model incorporating frequency-dependent conductor loss and dielectric loss is constructed to analyze the loss of each component of the dual-band bridged-T coil.
First, a 1.85/5.8-GHz dual-band branch-line coupler is implemented using the WIPD process. By cascading the dual-band bridged-T coils to replace the λ/4 transmission line, a dual-band branch line coupler with the same phase difference at two operating frequencies are achieved. The circuit size is 4mm × 3mm while the electrical size is around 0.02λ0 × 0.02λ0 at 1.85GHz and 0.08λ0× 0.06λ0 at 5.8GHz.
Next, the operating frequencies are raised to millimeter wave band, and two dual-band branch line couplers are implemented in WIPD process and 90nm CMOS process. The circuit size of the proposed18.7/38.5-GHz dual-band branch-line coupler in WIPD is 1.5mm × 1.4mm. The corresponding electrical size is around 0.09λ0 × 0.08λ0 at 18.7GHz and 0.19λ0× 0.18λ0 at 38.5GHz. The circuit size of the porposed 18.7/38-GHz dual-band branch line coupler in CMOS is 0.5mm × 0.5mm, while the corresponding electrical size is around 0.03λ0 × 0.03λ0 at 18.7GHz and 0.07λ0× 0.07λ0 at 38GHz.
These two dual-band coupelrs successfully verify the feasibility of bridged-T coils for realizing dual-band circuit components in the millimeter wave band.

關鍵字(中)

★ 雙頻
★ 微型化
★ 分支線耦合器

關鍵字(英)

★ Dual-band
★ Miniaturized
★ Branch-line coupler

論文目次

論文摘要 I
Abstract II
目錄 III
圖目錄 VI
表目錄 X
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 電路架構與原理 6
2.2 有損橋式T線圈模型 10
2.2.1 有損橋式T線圈模型萃取 10
2.2.2 有損橋式T線圈模型之應用:WIPD製程 15
2.2.3 有損橋式T線圈模型之應用: CMOS製程 25
2.3 結果與討論 35
第三章 1.85/5.8GHz微型化雙頻分支線耦合器 36
3.1 電路架構與原理 36
3.2 WIPD製程微型化雙頻分支線耦合器 41
3.2.1 雙頻橋式T線圈電路佈局設計 41
3.2.2 雙頻分支線耦合器電路佈局設計 50
3.2.3 晶片實作與量測 53
3.3 結果與討論 57
第四章微型化毫米波雙頻分支線耦合器 60
4.1 電路架構與原理 60
4.2 WIPD製程雙頻分支線耦合器 64
4.2.1 雙頻橋式T線圈電路佈局設計 64
4.2.2 18.7 / 38.5 GHz雙頻分支線耦合器 68
4.2.3 晶片實作與量測 71
4.2.4 小結 75
4.3 90nm CMOS製程雙頻分支線耦合器 76
4.3.1 雙頻橋式T線圈電路佈局設計 77
4.3.2 18.7 / 38GHz雙頻分支線耦合器 81
4.3.3 晶片實作與量測 84
4.3.4 小結 91
4.4 結果與討論 92
第五章結論與未來展望 96
參考文獻 98

參考文獻

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指導教授

林祐生(Yo-Shen Lin)

審核日期

2024-7-26

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