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標題: | 毫米波頻率轉換電路之研究 Research on Millimeter-Wave Frequency Conversion Circuits |
作者: | Chin-Shen Lin 林晉申 |
指導教授: | 王暉(Huei Wang) |
關鍵字: | 毫米波,頻率轉換電路,混頻器,倍頻器, millimeter-wave,frequency conversion circuit,mixer,doubler, |
出版年 : | 2007 |
學位: | 博士 |
摘要: | 本論文主要是討論多金屬耦合線馬遜平衡不平衡轉換器及寬頻的倍頻器及混頻器,研究方向是著重於發展包含倍頻器、降頻器及正交解調變器在內的微小化寬頻頻率轉換電路。
平衡不平衡轉換器被廣泛的使用在平衡式積體電路以產生差動信號,馬遜平衡不平衡轉換器有著寬頻的特性因此適用於寬頻的應用,而利用多金屬耦合線馬遜平衡不平衡轉換器,可以再有效的增加馬遜平衡不平衡轉換器的頻寬,因此更適合用來減少晶片面積。二金屬耦合線馬遜平衡不平衡轉換器的方程式推導及多金屬耦合線馬遜平衡不平衡轉換器的分析及系統化設計流程也在此論文中被提出,並且用許多實際製作的平衡不平衡轉換器做驗證,此外,兩個微波單晶積體電路的寬頻二極體倍頻器包含多金屬耦合線馬遜平衡不平衡轉換器也用來驗證此多金屬耦合線馬遜平衡不平衡轉換器的系統化設計流程,這兩個微波單晶積體電路在毫米波的頻段內都達到微小的晶片面積與寬頻的響應。 寬頻互補式金屬氧化物半導體吉伯特細胞降頻器使用螺旋型馬遜平衡不平衡轉換器也在此論文中被討論,此互補式金屬氧化物半導體混頻器可以達到9到50 GHz的頻寬。此外,一個正交解調變器基於此混頻器也被設計與討論,此電路的射頻操作範圍為40到50 GHz,數位調變信號也被用來測試此電路的表現,16-QAM的數位調變信號可以被順利的解調變,解調變時的EVM為6.3%。 Multi-conductor coupled-line Marchand baluns and broadband frequency doublers and mixers are presented in this dissertation. This research focuses on the development of miniature broadband frequency conversion circuits including frequency doublers, fundamental down-conversion mixer, and IQ-demodulator. Baluns are widely used in balanced integrated circuits to generate differential signals. Marchand balun has the advantage of broadband characteristic and is suitable for broadband applications. By using the multi-conductor coupled-line Marchand balun, the bandwidth can be further increased, and thus the chip area can be reduced. The equations for two-conductor coupled-line Marchand baluns are derived. The analysis and systematic design procedure for multi-conductor coupled-line Marchand baluns are also presented, and verified with a few fabricated multi-conductor coupled-line Marchand baluns. Two MMIC broadband diode frequency doublers using multi-conductor coupled-line Marchand baluns are implemented to demonstrate the design procedure of multi-conductor coupled-line Marchand baluns. The MMICs achieve miniature chip areas with broadband performances in millimeter-wave regime. Broadband CMOS Gilbert-cell based down-conversion mixer applied spiral-shaped coupled-line Marchand baluns is also presented. This CMOS mixer can achieve 9 to 50 GHz RF frequency range. An IQ demodulator used for direct conversion or low IF applications is designed based on this mixer. The RF operating frequency of this IQ demodulator is from 40 to 50 GHz. Digital modulated signals are used to test the performance of this demodulator. 16-QAM signals can be well demodulated with EVM better than 6.3 %. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/29310 |
全文授權: | 有償授權 |
顯示於系所單位: | 電信工程學研究所 |
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