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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/53982完整後設資料紀錄
| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 陳耀銘 | |
| dc.contributor.author | Chia-Lin Chen | en |
| dc.contributor.author | 陳嘉臨 | zh_TW |
| dc.date.accessioned | 2021-06-16T02:35:28Z | - |
| dc.date.available | 2020-08-05 | |
| dc.date.copyright | 2015-08-05 | |
| dc.date.issued | 2015 | |
| dc.date.submitted | 2015-07-27 | |
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/53982 | - |
| dc.description.abstract | 本論文之研究目的為封包追蹤電源供應器(Envelope Tracking Power Supply，ETPS)之研製，使用封包追蹤技術產生變動電源，取代傳統定電源供給之線性功率放大器以提升其效率。在封包追蹤功率放大器系統中，ETPS之輸出封包與功率放大器輸出之放大訊號，此兩電壓之不同步使功率放大器無法操作於最高效率。一般解決方式是將傳輸之原始訊號經延遲處理得延遲訊號，再使該兩電壓同步。但此方式使原始訊號需經訊號處理，所得之延遲訊號與原始訊號會產生差異。因此，本論文提出不需處理原始訊號之領前封包訊號法，利用簡易實現之相位領前電路，使ETPS之輸出封包盡量與PA之放大訊號兩電壓同步。本論文中，亦對ETPS造成輸出封包與原始訊號之封包訊號間之相位差進行數學分析與電路模擬，探討造成此相位差的原因。最後以操作於1MHz切換頻率，25W之降壓型ETPS硬體電路實驗結果驗證ETPS及領前封包訊號法之可行性。 | zh_TW |
| dc.description.abstract | In this thesis, an envelope tracking power supply (ETPS) using envelope tracking tecknique is proposed to improve the efficiency of a linear power amplifier by producing a changeable voltage supply instead of the conventional constant voltage supply. In an envelope tracking power amplifier system, the nonsynchronization of the two voltages, envelope output produced by the ETPS and amplified signal produced by the power amplifier, causing the problem of degrading the power amplifier efficiency. Delaying the transmitted original signal for a delay time to synchronize two voltages remains the general solution. However, the delayed signal may not be totally identical to the original signal due to the signal processing. Therefore, a solution which the original signal without being processed named leading envelope signal scheme with a simple implemented phase lead circuit to synchronize two voltages is proposed in this thesis. In addition, mathematical analysis and circuit simulations are carried out to discuss the factors of the phase difference caused by the proposed ETPS between the envelope output and the envelope signal of the original signal. Finally, the hardware implementation of a 25W Buck type ETPS operating at 1MHz switching frequency is proposed to verify the feasibility of the ETPS and leading envelope signal scheme. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-16T02:35:28Z (GMT). No. of bitstreams: 1 ntu-104-R01921102-1.pdf: 3659852 bytes, checksum: 0cac6aeec76185e5b653dddb4322105a (MD5) Previous issue date: 2015 | en |
| dc.description.tableofcontents | 口試委員審定書 i
致謝 ii 摘要 iii ABSTRACT iv 目錄 v 圖目錄 viii 表目錄 xii 第一章 緒論 1 1-1 研究背景與動機 1 1-2 文獻回顧 5 1-3 論文大綱 7 第二章 封包追蹤電源供應器 8 2-1 電路架構概念 8 2-1.1 線性式ETPS 8 2-1.2 切換式ETPS 9 2-1.3 切換-線性複合式ETPS 13 2-1.4 電路架構小結 17 2-2 操作原理 18 2-3 輸出封包與封包訊號之相位關係 21 2-3.1 LC濾波器之影響 23 2-3.2 微控制器之影響 29 2-3.3 電壓回授電路濾波電容之影響 31 2-3.4 相位關係小結 34 2-4 輸出封包與封包訊號之同步方法 34 2-4.1 延遲原始訊號法 35 2-4.2 領前封包訊號法 36 第三章 電路軟硬體介紹與設計 39 3-1 功率級元件設計 41 3-1.1 功率開關選擇 41 3-1.2 LC濾波器 42 3-2 控制級電路設計 47 3-2.1 微控制器介紹 47 3-2.2 電壓回授電路 48 3-2.3 相位領前電路 49 3-2.4 邏輯閘與延遲時間電路 55 3-2.5 閘極驅動電路 56 3-3 微控制器程式流程 57 第四章 電腦模擬與硬體電路實測 61 4-1 電腦模擬 61 4-1.1 定電壓輸出 63 4-1.2 未加相位領前電路之弦波電壓輸出 64 4-1.3 加入相位領前電路之弦波電壓輸出 68 4-1.4 電腦模擬小結 71 4-2 硬體電路實測結果 72 4-2.1 定電壓輸出 73 4-2.2 未加相位領前電路之弦波電壓輸出 74 4-2.3 加入相位領前電路之弦波電壓輸出 78 4-2.4 實測結果小結 81 第五章 結論與未來研究方向 87 5-1 結論 87 5-2 未來研究方向 88 參考文獻 89 | |
| dc.language.iso | zh-TW | |
| dc.title | 封包追蹤電源供應器之研製 | zh_TW |
| dc.title | Design and Implementation of Envelope Tracking Power Supply | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 103-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 陳德玉,邱煌仁,陳景然 | |
| dc.subject.keyword | 封包追蹤,封包追蹤電源供應器,延遲線,相位差, | zh_TW |
| dc.subject.keyword | envelope tracking,envelope tracking power supply,delay line,phase difference, | en |
| dc.relation.page | 93 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2015-07-27 | |
| dc.contributor.author-college | 電機資訊學院 | zh_TW |
| dc.contributor.author-dept | 電機工程學研究所 | zh_TW |
| 顯示於系所單位： | 電機工程學系 | |
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| ntu-104-1.pdf 目前未授權公開取用 | 3.57 MB | Adobe PDF |
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