The Design of CMOS Multi-Phase VCOs for High-Speed Applications
Date Issued
2005
Date
2005
Author(s)
Hsu, Ying-Chih
DOI
en-US
Abstract
The rapid growth of optical communication markets has motivated the development of high data-rate transceivers. In order to be integrated with the baseband mixed-mode circuits and to achieve the requirements of low power and low cost, utilizing the complementary metal-oxide semiconductor (CMOS) technology has become the design trends.
Among the circuits of the communication systems, multi-phase voltage-controlled oscillators (VCOs) are essential building blocks. The thesis will focus on the design of high-speed multi-phase VCOs using CMOS technologies.
The details of the thesis are organized as followed. In chapter 1, the applications of multi-phase VCOs in communication systems will be illustrated. The fundamentals of the oscillators from theories and circuit elements will be presented in chapter 2. Different kinds of multi-phase generators will be discussed in chapter 3. In chapter 4, a 9-GHz quadrature-phase VCO with a switched-bias technique is realized in TSMC CMOS 0.18-μm technology. In chapter 5, a 15-GHz/30-GHz dual-band multi-phase VCO with a phase error verification module is presented. Finally, a novel 43-GHz multi-phase VCO, which is suitable for the applications in the OC-768 optical communication systems, will be demonstrated in chapter 6.
Subjects
雙頻
多相位
壓控震盪器
相位雜訊
相位誤差
dual-band
multi-phase
voltage-controlled oscillator
phase noise
phase error
Type
thesis
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