Design of 18.5 GHz CMOS Voltage Controlled Oscillator Using Off-chip Cavity Resonator and Flip-chip Technology
Date Issued
2006
Date
2006
Author(s)
Fang, Tzu-Ming
DOI
en-US
Abstract
The rapid growth of communication markets has motivated the development of high performance transceivers. The local oscillator (LO) is an important building block of the transceiver. Among the several key figures of oscillator, phase noise is the most important criterion in oscillator because it directly determines the sensitivity of the receiver and the purity of the transmitter. Thus, the thesis will focus on the design of low phase noise voltage controlled oscillator (VCO) using off-chip cavity resonator and flip-chip technology.
The details of the thesis are organized as followed. In chapter 1, the background, research motivation and some literature review are introduced. In chapter 2, the basic principles of VCOs and several VCO architectures are illustrated. Also, the characteristics of some passive elements and phase noise will be discussed in this chapter. In chapter 3, we will introduce cavity resonator and one port reflection technique for Q measurement at first. Next, low-temperature co-fired ceramic (LTCC) cavity resonator and air cavity resonator will be proposed and flip-chip technology will be introduced. In chapter 4, two VCOs using LTCC cavity resonator and air cavity resonator are realized in TSMC CMOS 0.18 μm technology. Finally, the simulation result and measurement setup will be presented.
Subjects
壓控振盪器
低溫共燒陶瓷
共振器
覆晶
相位雜訊
VCO
LTCC
resonator
flip-chip
phase noise
Type
thesis
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