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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 陳昭宏(Jau-Horng Chen) | |
| dc.contributor.author | Shu-Chen Lin | en |
| dc.contributor.author | 林書辰 | zh_TW |
| dc.contributor.author | f04525034 | |
| dc.date.accessioned | 2022-11-24T03:08:56Z | - |
| dc.date.available | 2021-11-03 | |
| dc.date.available | 2022-11-24T03:08:56Z | - |
| dc.date.copyright | 2021-11-03 | |
| dc.date.issued | 2021 | |
| dc.date.submitted | 2021-10-26 | |
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/80542 | - |
| dc.description.abstract | 在無線傳輸系統中，效率一直是系統設計考量中最重要的因素之一，而在其中所佔功耗最大的功率放大器就成為了整個系統中最關鍵的原件。隨著高速傳輸的需求日益上升，新型的傳輸標準定義了更高的傳輸頻寬、更嚴峻的線性度要求及更高的峰均功率比，因而增加了無線傳輸機的設計難度。為了設計符合新型傳輸標準的傳輸機，本論文採用了擁有高效率與高線性度之特性的脈衝寬度調變之極座標架構。本論文的目標為針對數位前端以及射頻前端進行效率的優化，使提出的脈衝寬度調變之極座標架構能滿足第五代行動通訊之需求。 首先，本論文針對脈衝寬度調變之極座標架構的線性度設計了一寬頻功率放大器。藉由模擬以及量測，可成功驗證寬帶功率放大器可有效降低脈衝寬度調變之極座標系統在非線性放大時所遭受之失真。 接著，針對脈衝寬度調變的演算法，本論文進行了探討以及分析。舊有的脈衝寬度調變計算會使輸出訊號擁有抖動，此等抖動會增加切換功率放大器之非理想性，因而遭受更多的非線性放大。為了減緩此現象，本論文提出了新的脈衝寬度調變演算法，可有效的提升傅立葉級數在頻域的收斂性，從而抑制訊號在時域的抖動。利用新型的演算法，脈衝寬度調變極座標收發機可在沒有任何線性提升技術下通過嚴峻的20-MHz第五代行動通訊標準之基地台線性度要求。 接著，本論文針對內插法提出新的演算法。在新提出的演算法中，能在低複雜度的前提下擁有良好的頻率響應，並且能支援大多數無線通訊中所適用的頻寬。經由量測結果，它能適用於相當低的過取樣率，並在內插過程中有效抑制失真。不僅如此，本論文利用提出的內插法實作出了實時的脈衝寬度調變極座標系統，並能有效減少實作時硬體資源之使用，在數位前端達到高效之目標。 最後，本論文之研究將有助於開發實時脈衝寬度調變極座標架構的實現，並且能在提升效率的同時達到良好的線性度。 | zh_TW |
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| dc.description.tableofcontents | CONTENTS 誌謝 i 中文摘要 iii ABSTRACT v CONTENTS vii LIST OF FIGURES xi LIST OF TABLES xvii LIST OF ABBREVIATIONS xix Chapter 1 Introduction 1 1.1 Motivation 1 1.2 Background 2 1.3 Efficient architectures 7 1.4 Pulse-Modulated Polar Transmitter 10 1.5 Research Purpose 12 Chapter 2 Related Work 15 2.1 Conventional PMPT 15 2.2 Aliasing-free Digital PWM of PMPT 16 2.3 Linearity Enhancement of Wideband PMPT 17 2.4 Multi-phase and Multi-level PMPT 17 2.5 Summary 19 Chapter 3 A Broadband PA Design for Highly Linear PMPT 21 3.1 Introduction 21 3.2 Broadband Class-E PA Topology 23 3.2.1 Conventional Class-E PA Design 23 3.2.2 Broadband Class-E PA Design 25 3.2.3 Ladder LPF Broadband Network 27 3.3 Broadband PA Design for PMPT 30 3.4 System Implementation and Measurement Results 34 3.5 Summary 41 Chapter 4 Gibbs-Phenomenon-Reduced Digital PWM for PMPT 43 4.1 Introduction 43 4.2 Non-ideal Characteristics of Gibbs Phenomenon 44 4.3 Gibbs Phenomenon Reduction Filter 48 4.4 System Implementation and Measurement Results 62 4.5 Summary 66 Chapter 5 Efficient Interpolation Method for Wireless Communication System 67 5.1 Introduction 67 5.2 Interpolation Methods and Theory 70 5.2.1 Interpolating Low-Pass Filter 70 5.2.2 Interpolating Polynomials 71 5.3 Proposed Interpolation Method 76 5.4 Computation Complexity 81 5.5 Measurement Results 86 5.6 Efficient Real-Time PMPT System using Proposed Interpolation Method 92 5.6.1 Real-Time PMPT System Overview 92 5.6.2 Real-Time Interpolation Implementation 94 5.6.3 Cross-Correlation for Signal Synchronization 96 5.6.4 System Implementation 97 5.7 Summary 102 Chapter 6 Conclusions 103 Reference 107 | |
| dc.language.iso | en | |
| dc.subject | 內插法 | zh_TW |
| dc.subject | 功率放大器 | zh_TW |
| dc.subject | 極座標發射機 | zh_TW |
| dc.subject | 數位預失真校正技術 | zh_TW |
| dc.subject | 數位脈寬調變技術 | zh_TW |
| dc.subject | 濾波器 | zh_TW |
| dc.subject | power amplifiers | en |
| dc.subject | filter | en |
| dc.subject | digital pulse-width modulation (DPWM) | en |
| dc.subject | digital pre-distortion correction | en |
| dc.subject | polar transmitters | en |
| dc.subject | interpolation | en |
| dc.title | 高效實現應用於無線通訊之高線性度發射機 | zh_TW |
| dc.title | Efficient Implementation of Highly Linear Transmitters for Wireless Communication Applications | en |
| dc.date.schoolyear | 109-2 | |
| dc.description.degree | 博士 | |
| dc.contributor.oralexamcommittee | 張恆華(Hsin-Tsai Liu),陳怡然(Chih-Yang Tseng),楊濠瞬,余帝穀 | |
| dc.subject.keyword | 功率放大器,極座標發射機,數位預失真校正技術,數位脈寬調變技術,濾波器,內插法, | zh_TW |
| dc.subject.keyword | power amplifiers,polar transmitters,digital pre-distortion correction,digital pulse-width modulation (DPWM),filter,interpolation, | en |
| dc.relation.page | 118 | |
| dc.identifier.doi | 10.6342/NTU202104196 | |
| dc.rights.note | 同意授權(限校園內公開) | |
| dc.date.accepted | 2021-10-27 | |
| dc.contributor.author-college | 工學院 | zh_TW |
| dc.contributor.author-dept | 工程科學及海洋工程學研究所 | zh_TW |
| 顯示於系所單位： | 工程科學及海洋工程學系 | |
文件中的檔案：
| 檔案 | 大小 | 格式 | |
|---|---|---|---|
| U0001-2610202105055800.pdf 授權僅限NTU校內IP使用（校園外請利用VPN校外連線服務） | 4.78 MB | Adobe PDF |
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