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應用於W-CDMA之整數型頻率合成器
Thesis

應用於W-CDMA之整數型頻率合成器

張耿孟
Masters, 國立清華大學, 電子工程研究所
2003

Abstract

寬頻分碼多工多重擷取 頻率合成器 直接降頻 壓控振盪器 相位頻率檢測器 除頻器 W-CDMA Frequency synthesizer Direct-conversion VCO PFD Divider
In this thesis, RF receiver requirements for W-CDMA user equipment are derived from the analysis of the test conditions in the recent 3GPP standard. From each test condition, we could define system-level RF characteristics such as noise figure, IIP3, phase noise, etc. On the basis of these analyses, we performed some optimization on the performance of each receiver component. The design of an integer-N frequency synthesizer for 2-GHz W-CDMA applications is also presented in this thesis, including voltage controlled oscillator, phase frequency detector, charge pump, loop filter and divider. Realizing in a TSMC CMOS 0.18 um one-poly six-metal (1P6M) technology, the synthesizer provides a channel spacing of 5 MHz while dissipating 21.6 mW from 1.8 V power supply. The switched capacitor VCO has output frequency from 3949 MHz to 4534 MHz with phase noise -138 dBc/Hz at 8 MHz offset.

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