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標題: | 具變壓器回授的Ka-Band低功耗頻率合成器與具可調式穩壓電路的壓控震盪器之研製 Design and Analysis of Ka-Band Low Power Transformer-Feedback Frequency Synthesizer and 24GHz Supply-Regulated VCO with Adjustable Regulator Embedded |
作者: | Chia-Hui Yu 余家輝 |
指導教授: | 黃天偉 |
關鍵字: | 鎖相迴路,頻率合成器,壓控震盪器,注入式鎖定倍頻器,注入式鎖定除頻器,變壓器回授,可調式穩(降)壓電路。, phase-locked loop,frequency synthesizer,voltage-controlled oscillator,injection-locked frequency multiplier,injection-locked frequency divider,transformer feedback,adjustable supply-regulated circuit,regulator, |
出版年 : | 2013 |
學位: | 碩士 |
摘要: | 本篇論文,為克服互補式金氧半導體製程限制,提出了一系列創新的電路架構,對於CMOS毫米波的頻率合成器、倍頻器、壓控震盪器做出相關之設計與分析。
在第二章中,低功耗、適用於Ka-Band的頻率合成器被提出且具有不錯的頻寬,適合應用在可攜式RF前端電路。該頻率合成器採用了變壓器回授的壓控震盪器和低功耗的注入鎖定式除頻器,故可以達到低功耗的特點,並且兼顧了寬頻的特性。其中針對Ka-Band的頻率合成器的迴路設計與雜訊考量,和頻率合成器裡的電路成員,壓控震盪器、注入鎖定式除頻器、CML除頻器、多模除數除頻器、充電汞……等電路做了適當的分析與研究。 在第三章中,低功耗、適用於24GHz的類注入式鎖定倍頻器被提出,該倍頻器依據了一個新的迴路增益條件的設計概念,故能達到及寬頻的電路特性,適用於有寬頻應用需求的RF前端電路。其中針對新的迴路增益條件和傳統注入鎖定式倍頻器的迴路增益條件做了分析與比較。該電路採用並聯電容的方式去抑制基頻訊號,並且有一個on-chip的MarchandBalun將單端訊號轉成差動訊號輸入。 在第四章中,提出了一個具有可調式穩(降)壓電路的壓控震盪器,該穩壓電路主要作用為改變電阻回授網路中可變電阻的控制電壓,使得壓控震盪器不需要使用變容二極體就可以做調變。因為沒有使用Q值較差的變容二極體,且穩壓電路本身即有對電源端的雜訊做穩定降壓的效果,在相位雜訊方面的特性將有所提升。該壓控震盪器為了達成高F.O.M.的設計目標,採用了互補式的變壓器回授的技術,它能讓電路操作在較低的工作電壓下同時保有不錯的相位雜訊表現。 論文的第一章和第五章則分別是論文的動機介紹和本碩士論文完成的工作之結論。 To alleviate the limitations imposed on CMOS technique, some design techniques are developed for CMOS millimeter-wave integrated circuits, such as frequency synthesizer, frequency doubler and voltage-controlled oscillator in this thesis. In chapter 2, alow power Ka-bandfrequency synthesizer is presented and with good bandwidth for CMOS RF frontends circuits. The circuit employs a transformer-feedback voltage-controlled oscillator and an injection-locked frequency divider, so it can achieve low power design and possess a good bandwidth specification. In this chapter, we also focus on the study and analysis of the Ka-band frequencysynthesizer closed loop design and the phase noise consideration, and we also focus on the design and analysis of the subcircuits, such as voltage-controlled oscillator, injection-locked frequency divider, CML divider, multi-modulars divider and charge pump, etc. In chapter 3, a low power 24GHz quasi-injection-locked voltage-controlled oscillator is proposed. The circuit using a novel design methodology about the loop gain achieves wide bandwidth property and is applicable to the wide bandwidth RF system.In this chapter, a theoreticalanalysis for quasi-injection-locked technique and the comparison between the conventional injection locking are accomplished. This circuit employs a paralleled capacitor to suppress unwanted harmonic signals and embedded an on-chip Marchand balun to translate a single-ended signal to a differential input signal. In chapter 4, a supply-regulated transformer-feedback-complementary VCO with adjustable regulator embedded is proposed. By tuning the resistor in the feedback network, the VCO can have frequency tuning mechanism without using tuning varactors. Because of without using the tuning varactors, which are low quality factor device, and the regulator possessing the supply-regulated property against the noise, the VCO would have better phase noise performance. In order to have high F.o.M. performance, the complementary VCO adopts the three-coil transformer-feedback to have low dc power comsumption while maintaining good phase noise performance. Chapter 1 and chapter 5 are the introduction and the conclusion about this thesis, respectively. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/62357 |
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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