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Title:Multi-Bit Delta -Sigma Modulation Technique for Fractional-N Frequency Synthesizers
Author(s):Rhee, Woogeun
Doctoral Committee Chair(s):Song, Bang-Sup
Department / Program:Electrical Engineering
Discipline:Electrical Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Engineering, Electronics and Electrical
Abstract:This thesis proposes a multi-bit Delta-Sigma modulation technique as a spur reduction method to enhance the overall synthesizer performance, and the oversampling modulator performance is analyzed with the consideration of practical design aspects for frequency synthesizers. A prototype fractional- N frequency synthesizer using a 3-b third-order Delta-Sigma modulator has been designed and implemented in 0.5-gm CMOS. Synthesizing 900 MHz with 1-Hz resolution, it exhibits an in-band phase noise of --92 dBc/Hz at 10-kHz offset with a reference spur of less than --95 dBc. Experimental results show that the proposed system is applicable to low-cost, low-power wireless applications and that it meets the requirements of most RF applications including multi-slot GSM, IS-54, CDMA, and PDC.
Issue Date:2001
Description:122 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2001.
Other Identifier(s):(MiAaPQ)AAI9996677
Date Available in IDEALS:2015-09-25
Date Deposited:2001

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