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標題: | 應用於微波及毫米波混波器及調變器之研製 Design of Mixers and Modulators for Microwave and Millimeter-wave Application |
作者: | Chun-Lin Kuo 郭俊麟 |
指導教授: | 王暉 |
關鍵字: | 混波器,調變器,毫米波, Mixer,Modulator,Millimeter-wave, |
出版年 : | 2007 |
學位: | 碩士 |
摘要: | 混波器在傳統收發系統中,佔有相當重要的角色,而且對於系統特性的影響甚鉅。而一個好的調變器,在數位訊號的調變系統中,也扮演著關鍵的角色。在過去的研究中,混波器常以二極體或是晶體檢測器的架構實現,而近年因半導體製程的研發與成長,產生了相當多由主動式元件組成的混波器架構,因此,利用新的半導體製程來設計出特性良好的混波器及調變器,是一個相當值得探討的主題。
本論文的主題在於利用先進的半導體製程,設計出特性良好且寬頻的混波器 ,以及利用混波器的基本特性,來組成一個高頻的調變器。論文主要可分為三大部分,第一部份介紹混波器及調變器的功能,基本設計原理以及設計時架構的考量。第二部份討論應用於毫米波的寬頻降頻混波器的原理,本論文提出兩個寬頻的降頻混波器,並會說明其架構以及設計的原理。第一個電路使用台積電0.13微米金氧半互補式製程提出一個分佈式的次諧波混波器,成功的實現了一個30-68 GHz的寬頻次諧波混波器。此晶片的面積僅有0.36平方毫米。除此之外,利用製程的特性,我們設計了一個由基體驅動的混波器,操作在11-35 GHz,其直流功率損耗僅有6 mW。應用於毫米波的調變器設計亦是本論文的討論重點,最後一個部份將討論調變器之設計與原理,並利用台積電90奈米金氧半互補式製程,設計了一個作用於70 GHz的四相位次諧波調變器,而其面積為0.51平方微米,我們亦將討論其特性與調變器中匹配的影響。 Mixer plays an important role in a transceiver system. The characteristics affect the performance of the system. A modulator is also very important in a direct-conversion system. Therefore, to design high frequency mixers and modulators with good performance is important. The goal of the thesis is to design and implement wideband mixers and high frequency IQ modulator. The thesis includes three parts. The first part introduces the basic concept and design parameters of the mixers and modulators. In the second part, we employed the distributed topology to design a wideband sub-harmonic mixer. The concept of distributed circuits will also be described in this part. The distributed sub-harmonic mixer was fabricated using TSMC 0.13-um CMOS technology. From the measurement results, the mixer achieved a conversion loss of 11 dB from 30 to 68 GHz with a compact size of 0.36 mm2. In addition, a bulk-pumped fundamental mixer is designed and implemented in this part and the theory is introduced. With the advantages of low supply voltage and power consumption, the mixer demonstrates a conversion gain of -3 to 0 dB from 11 to 35 GHz. The total power consumption is only 6 mW, included the IF output buffer amplifier. Finally, a sub-harmonic IQ modulator using TSMC 90-nm CMOS technology is implemented and the design concept is also presented. How the matching network between mixer cell and 90° phase shifter affects the image rejection will also be discussed. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/29256 |
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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