巨量多波束主動天線陣列發射機之射基頻整合設計;RF and Baseband Integrated Design of Massive Multibeam Phased-Array Transmitter

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Title:	巨量多波束主動天線陣列發射機之射基頻整合設計;RF and Baseband Integrated Design of Massive Multibeam Phased-Array Transmitter
Authors:	郭永睿;KUO, YUNG-JUI
Contributors:	電機工程研究所
Keywords:	第五代行動通訊系統;巨量天線;相位陣列天線;波束形成;下行發射機;射頻互耦合;多波束;多通道發射機;天線陣列;Beamforming;5th generation mobile communication;phased array;down-link transmitter;antenna array;massive MIMO
Date:	2017
Issue Date:	2019-07-17
Publisher:	電機工程研究所
Abstract:	本論文設計一適用於巨量主動天線雛形系統之射頻發射機模組，可同時支援類比與數位波束成形，並以多波束掃描為目標，可應用於下世代行動通訊波束追蹤的概念。此巨量主動天線雛形系統有64支天線以及16路射頻通道，以具備波束形成的功能，其以4通道為次矩陣的整合方式進行系統整合。其中，各組發射機通道包含：功率放大器、可調式衰減器、正交調變器、反射式相移器，以及注入式鎖定振盪器等。並整合微處理機控制單元，進行一對多主從裝置的溝通，包含健康狀況回報以及波束形成控制命令上傳。在系統整合上，解決多項議題，包含多項控制溝通協定的干擾、截割接地面的射頻效應，以及射頻互耦合干擾效應等。最終量測結果與波束形成預測模型的比較下：單波束的平均主波束指向角度誤差為1.4°，平均旁波瓣比為5.8 dB，3-dB波辦寬為7°，等效全向幅射功率(EIRP)約40 dBm；多波束的平均主波束指向角度誤差為1.3°，平均旁波瓣比為3.5 dB，3-dB波辦寬為8°。 A 64-element active antenna transmitter array system is presented in this thesis, which is aimed for the fifth-generation mobile communication. There are 16 RF Transmitting chain, which chain is composed of RF circuits including power amplifier, variable attenuator, quadrature modulator, reflection-type phase shifter, and injection-lock oscillator, and microcontroller for monitoring circuit health states and beamforming controlled codes. The measurement results show the distinct angle and multiple beam generation in a 120° sector. For the simple beam case, the beam has 7° of HPBW and 40 dBm of EIRP, with 1.4° beam direction error and 5 dB SLL. For multiple beam patterns, there are 1.3° of main beam directioin error, 3.5 dB of average SLL, and 8° of HPBW.
Appears in Collections:	[電機工程研究所] 學位論文

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