DocumentCode
3189940
Title
Fractional-N frequency synthesis: Overview and design perspectives
Author
Rhee, Woogeun ; Zhou, Bo ; Wang, ZhiHua
Author_Institution
Inst. of Microelectron., Tsinghua Univ., Beijing, China
fYear
2011
fDate
Nov. 30 2011-Dec. 2 2011
Firstpage
125
Lastpage
128
Abstract
This paper gives an overview of fractional-N frequency synthesis with design perspectives focusing on ΔΣ fractional-N phase-locked loops (PLLs). Spur generation and nonlinearity issue in the ΔΣ fractional-N PLLs are discussed with hardware results. High-order ΔΣ modulation with embedded FIR filtering is considered for low noise frequency generation. Also, various architectures of finite-modulo fractional-N PLLs are reviewed for alternative low noise design.
Keywords
frequency synthesizers; phase locked loops; FIR filtering; PLL; Spur generation; fractional-N frequency synthesis; high-order ΔΣ modulation; low noise frequency generation; Finite impulse response filter; Frequency modulation; Frequency synthesizers; Noise; Phase locked loops; Voltage-controlled oscillators;
fLanguage
English
Publisher
ieee
Conference_Titel
Radio-Frequency Integration Technology (RFIT), 2011 IEEE International Symposium on
Conference_Location
Beijing
Print_ISBN
978-1-4577-0517-5
Type
conf
DOI
10.1109/RFIT.2011.6141757
Filename
6141757
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