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研究生:林育聖
研究生(外文):Yu-sheng Lin
論文名稱:採用T型LC相移器之低電壓WiMAX混波器設計
論文名稱(外文):Low-Voltage Mixer Designs with a T-Type LC Phase Shifterfor WiMAX Applications
指導教授:李世明李世明引用關係吳建銘吳建銘引用關係
指導教授(外文):Simon C. LiJian-ming Wu
學位類別:碩士
校院名稱:國立臺南大學
系所名稱:通訊工程研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
畢業學年度:95
語文別:中文
論文頁數:38
中文關鍵詞:混波器低電壓T型LC相移器
外文關鍵詞:Low-VoltageMixerT-Type LC Phase Shifter
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本論文主要探討應用於WiMAX系統之低電壓操作的混波器設計,所提出的設計方法是採用具有180度相位差的T型LC相移器取代在傳統Gilbert混波器電路中的轉導放大級以實現混波器低電壓操作。使用Agilent Technologies ATF-55143 假型高速電子移動場效應電晶體(pHEMT)設計2.6 GHz混波器混成微波積體電路(Hybrid Microwave Integrated Circuits, HMICs)以及使用台灣積體電路製造公司(TSMC)提供的0.18 μm互補式金屬氧化半導體(CMOS)電晶體設計的2.6 GHz混波器單晶微波積體電路(Monolithic Microwave Integrated Circuits, MMICs)佐證新型低電壓操作2.6 GHz混波器混成微波積體電路重要的射頻參數模擬結果為轉換增益等於7.1 dB,輸入1 dB壓縮點等於-5 dBm,輸入三階交越點等於1.9 dBm以及雜訊指數等於13.5 dB,所使用的操作電壓為0.8V以及消耗功率為3.5 mW。2.6 GHz混波器單晶微波積體電路重要的射頻參數模擬結果包括轉換增益等於5.9 dB,輸入1 dB壓縮點等於-9 dBm,輸入三階交越點等於1 dBm以及雜訊指數等於11.3 dB,所使用的操作電壓為0.8 V以及消耗功率為6.4 mW。
This thesis principally investigated the design of low voltage mixers for WiMAX applications. In the proposed circuit, the transconductance stage in a commonly used Gilbert mixer is taken the place of a 180 degree T-type LC phase shifter for the low-voltage operation. This low-voltage design is verified by 2.6 GHz mixer hybrid microwave integrated circuits (HMICs) using Agilent Technologies’s enhancement-mode GaAs pseudomorphic high electron mobility transistors (pHEMTs) and 2.6 GHz mixer monolithic microwave integrated circuits (MMICs) using TSMC 0.18 μm CMOS process. The simulated results of crucial RF parameters for 2.6 GHz mixer HMICs include a conversion gain (Gc) equal to 7.1 dB, an input 1 dB compression point (P1-dB) equal to -5 dBm, an input third-order intercept point (IIP3) equal to 1.9 dBm, and noise figure (NF) equal to 13.5 dB. A supply voltage of 0.8 V is used and a power consumption is 3.5 mW. The simulated results include Gc, IP1-dB, IIP3, and NF for 2.6 GHz mixer MMICs are 5.9 dB, -9 dBm, 1 dBm, and 11.3 dB, respectively. A supply voltage of 0.8 V is used and a power consumption is 6.4 mW.
摘 要 i
ABSTRACT ii
目錄 iv
圖目錄 v
表目錄 vii
第一章 緒論 1
1-1 WiMAX系統 1
1-2研究動機 4
1-3 章節說明 5
第二章 低電壓主動式混波器 6
2-1 Gilbert混波器 6
2-2 修正型Gilbert混波器 8
第三章 2.6GHz低電壓混波器設計 12
3-1 射頻接收機與混波器規格 12
3-2 具有T型LC相移器之混波器混成微波積體電路 17
3-3 具有T型LC相移器之混波器單晶微波積體電路 24
第四章 結論 32
參考文獻 33
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