智慧型天線系統之關鍵被動組件研製

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姓名

江慶益(Qing-yi Jiang) 查詢紙本館藏

畢業系所

電機工程學系

論文名稱

智慧型天線系統之關鍵被動組件研製
(Designs of Key Passive Building Blocks for a Smart Antenna System)

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至系統瀏覽論文 (2025-10-20以後開放)

摘要(中)

本論文以智慧型天線系統之波束成型模組(Beam-forming module)與訊號來向(Direction of Array, DOA)偵測器中的關鍵被動組件為設計目標。首先，因應第五代行動通訊發展需求，本論文題出操作於28 GHz頻段之切換式波束成型晶片，設計上使用橋式T線圈取代傳輸線以縮小4×4巴特勒矩陣的電路尺寸，進而與吸收式單刀四擲開關整合成切換式波束成型晶片，並實現於砷化鎵製程中。整體晶片尺寸僅1.798 mm×1.85 mm，在28 GHz的電氣尺寸為0.172 λ0 ×0.168 λ0。其次，因應多頻、多模的操作需求，採用雙頻橋式T線圈實現微型化雙頻六埠網路設計，以做為訊號來向偵測器的基本組件。此雙頻六埠網路的操作頻率為2.45與5.8 GHz，並實現於積體被動電路(IPD)製程中，電路面積僅5.85 mm×5.47 mm，在2.45 GHz的操作頻率下電氣尺寸為0.0477 λ0 ×0.0446 λ0，在5.8 GHz的頻率下電氣尺寸則為0.113 λ0 ×0.105 λ0。

摘要(英)

In this thesis, a compact switched beamformer for use in a beam-forming antenna array and a dual-band six-port network for use in a direction of arrival estimator are proposed, which will serve as key passive building block designs of a smart antenna system. First, the design of an on-chip switched beamforming network is demonstrated at 28 GHz, which is based on the integration of an absorptive single-pole four-throw (SP4T) switch and a 4×4 Butler matrix using the GaAs pHEMT process. A compact circuit size is achieved by using bridged-T coils to replace transmission line sections in the 4×4 Butler matrix. Specifically, the circuit size is only 1.798 mm×1.85 mm while the electrical size is around 0.172 λ0×0.168 λ0 at 28 GHz. Driven by the demand of multi-frequency and multi-mode wireless communication apparatus, a dual-band six-port network is also developed, in which dual-band bridged-T coils are employed as the buildings blocks. The two operating frequencies of the dual-band six-port network are set as 2.45 and 5.8 GHz, and it is implemented using an integrated passive circuit (IPD) process. The circuit size is only 5.85 mm×5.47 mm. The corresponding electrical size is around 0.0477 λ0× 0.0446 λ0 at 2.4 GHz and 0.113 λ0×0.105 λ0 at 5.8 GHz.

關鍵字(中)

★ 波束成型網路
★ 六埠網路

關鍵字(英)

論文目次

論文摘要 I
Abstract II
致謝 III
目錄 IV
圖形列表 VI
表格列表 IX
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
第二章毫米波微型化切換式波束成型晶片 6
2.1電路架構及原理 6
2.1.1巴特勒矩陣 6
2.1.2吸收式單刀四擲開關 8
2.1.3切換式波束成型晶片 8
2.2切換式波束成型晶片電路設計 9
2.2.1巴特勒矩陣 9
2.2.2吸收式單刀四擲開關 16
2.2.3切換式波束成型晶片 20
2.3電路實作與驗證 24
2.4電路製程變異問題探討 32
2.4.1巴特勒矩陣測試電路量測 32
2.4.2電晶體測試電路量測 33
2.4.3重新模擬結果 37
2.5電路改版設計 43
2.6結果與討論 48
第三章微型化雙頻六埠網路 50
3.1電路架構及原理 50
3.2 電路設計 52
3.2.1雙頻橋式T線圈等效傳輸線 52
3.2.2微小化雙頻分支線耦合器 54
3.2.3微小化雙頻功率分配器 58
3.2.4微小化雙頻六埠網路 60
3.3電路實作與驗證 63
3.4結果討論 72
第四章結論 74
參考文獻 76

參考文獻

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指導教授

林祐生(Yo-Shen Lin)

審核日期

2020-10-21

推文