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研究生:方偉廷
研究生(外文):Wei-Ting Fang
論文名稱:基於橋式T線圈之微型化切換式波束成型模組
論文名稱(外文):Miniaturized switched beamformer module using bridged-T coils
指導教授:林祐生林祐生引用關係
指導教授(外文):Yo-Shen Lin
學位類別:博士
校院名稱:國立中央大學
系所名稱:電機工程學系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2017
畢業學年度:105
語文別:英文
論文頁數:146
中文關鍵詞:橋式T線圈波束成型雙頻
外文關鍵詞:bridged-T coilbeamformerSPDT switchdual-band
相關次數:
  • 被引用被引用:13
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  • 下載下載:31
  • 收藏至我的研究室書目清單書目收藏:0
近年來,相位陣列已逐漸導入日常生活中的無線通訊裝置。在諸多相位陣列技術中,由於切換式波束成型器具有低功率消耗、低成本的特性,以及較容易實現,因此更適合使用在商用無線通訊系統中。本論文以應用於行動通訊裝置中的智慧天線系統為開發目標,提出兩種使用IPD製程實現的2.4 GHz切換式波束成型模組,並達成低功耗、微型化的特性。
橋式T線圈是本論文中的核心技術,它被用來實現波束成型模組中的諸多組件,以達到微型化設計的目標。本論文首先以一個多模態共振器帶通濾波器設計來介紹如何以橋式T線圈縮小電路面積。此寬頻帶通濾波器是目前已發表的多模態共振器帶通濾波器中面積最小的。
其次,橋式T線圈被用以實現切換式波束成型器中的諸多組件,包含:單刀雙擲開關、收發切換開關、以及巴特勒矩陣。藉由以橋式T線圈替代傳輸線的方式,這些元件的電路尺寸皆大幅的縮小。本研究以異質整合的方法整合這些元件,實現兩種切換式波束成型模組。第一個模組整合了4 × 4巴特勒矩陣、收發切換開關、以及吸收式單刀四擲開關,其模組尺寸僅有4.9 mm × 5.0 mm × 0.9 mm。第二個模組整合了4 × 4巴特勒矩陣以及兩個吸收式單刀雙擲開關,其模組尺寸只有4.9 mm × 5.0 mm,更只有0.4 mm的厚度。
此外,本論文亦提出一個雙頻橋式T線圈的設計方式,以利微型化雙頻波束成型器的設計。首先,以此設計方式實現雙頻分枝耦合器於IPD晶片中,為目前已發表的雙頻分枝耦合器中最小的。並將之用於2.45 GHz以及5 GHz雙頻巴特勒矩陣的設計,以實現微型化雙頻波束成型器。本研究所提出之波束成型模組皆具低成本、微型化、及低功耗的特性,將有助於手持式裝置上實現智慧天線系統。
Phased arrays have been gradually applied to wireless communication systems in our daily life. Among various phased array technologies, the switched beamformers are relatively easy to realize, and they are more suitable for commercial wireless communication systems due to their low power consumption and low cost. In this study, two 2.4-GHz switched beamformer modules in IPD process with low power consumption and compact size are proposed, which are targeted for implementing smart antenna systems in mobile communication devices.
The Bridged-T coil is the core technology used in this study. Specifically, the bridged-T coil is adopted to realize the building blocks of the proposed switched beamformer such that very compact circuit size can be achieved. The use of the bridged-T coil to achieve circuit size reduction of microwave circuits is first demonstrated by an ultra-wideband multi-mode resonator bandpass filter design. The smallest multi-mode resonator bandpass filter ever reported is presented.
Next, the bridged-T coils are used to realize the key building blocks of a 2.4-GHz switched beamformer modules, i.e., an absorptive single-pole double-throw (SPDT) switch, a T/R switch, and a 4 × 4 Butler matrix. By replacing the transmission line sections with bridged-T coils, the chip sizes of these circuit elements are largely reduced. Two switched beamformer modules are then realized based on the heterogeneous integration of these building blocks. The first one integrates a 4 × 4 Butler matrix, an absorptive SP4T switch, and a T/R switch in a compact module size of 4.9 mm × 5.0 mm ×0.9 mm. The second one integrates a 4 × 4 Butler matrix and two absorptive SPDT switches, which features a module size of 4.9 mm × 5.0 mm with a very low profile of only 0.4 mm.
In additional, dual-band bridged-T coil is proposed to help achieve miniature dual-band beamformer designs. A dual-band branch-coupler is first implemented in IPD process, which is the smallest dual-band branch-line coupler ever reported. Then, a dual-band 4 × 4 Butler matrix is designed for 2.45/5.8-GHz dual-band switched beamformer applications. The proposed switched beamformer modules feature low-cost, compact size, low power consumption, and low-profile. They can help introduce smart antenna systems into modern mobile applications.
論文摘要 i
Abstract ii
Contents iv
List of Figures vi
List of Tables xii
Chapter 1 Introduction 1
1.1 Motivation 1
1.2 Literature Survey 3
1.3 Contributions 7
1.4 Organization 8
Chapter 2 Integrated Passive Device Process and Bridged-T Coil 11
2.1 Integrated Passive Device Process 11
2.2 Bridged-T Coil 12
2.3 Miniaturized UWB Bandpass Filter Using Bridged-T Coil 18
2.3.1 Filter Design 19
2.3.2 Filter Implementation 23
Chapter 3 Highly Integrated Switched Beamformer Module for 2.4 GHz Wireless Transceiver Application 27
3.1 Package Structure 27
3.2 Circuit Design 29
3.2.1 Butler Matrix 29
3.2.2 T/R Switch 35
3.2.3 SP4T Switch 37
3.3 Module Implementation and Results 38
Chapter 4 2.4-GHz Absorptive MMIC Switch for Switched Beamformer Application 52
4.1 Absorptive SPDT RF Switch 52
4.2 Absorptive Switch for Switched Beamformer Applications 62
4.3 Switch Beamformer Module 68
Chapter 5 Dual-Band Bridged-T Coil and its Application 83
5.1 Dual-Band Bridged-T Coil 83
5.2 Dual-Band Branch-Line Coupler 95
5.3 Dual-Band Butler Matrix 104
Chapter 6 Conclusions 114
6.1 Brief Conclusion 114
6.2 Future Work 115
References 118
Publication List 126
Journal Paper: 126
Conference Paper: 126
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