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On the phase-noise and phase-error performances of multiphase LC CMOS VCOs

Andreani, Pietro LU and Wang, Xiaoyan (2004) In IEEE Journal of Solid-State Circuits 39(11). p.1883-1893
Abstract
This paper presents an analysis of phase noise in multiphase LC oscillators, and measurement results for several CMOS quadrature-voltage-controlled-oscillators (QVCOs) working in the 2-GHz frequency range. The phase noise data for a so-called BS-QVCO (-140 dBc/Hz or less at 3 MHz frequency offset from the carrier, for a power consumption of 20.8 mW and a figure-of-merit of 184 dBc/Hz) show that phase noise performances are close to the previously derived limits. A systematic cause of departure from ideal quadrature between QVCO signals is also analyzed and measured experimentally, and a compact LC-tank layout that removes this source of phase error is proposed. A TS-QVCO designed with this technique shows a phase-noise figure-of-merit... (More)
This paper presents an analysis of phase noise in multiphase LC oscillators, and measurement results for several CMOS quadrature-voltage-controlled-oscillators (QVCOs) working in the 2-GHz frequency range. The phase noise data for a so-called BS-QVCO (-140 dBc/Hz or less at 3 MHz frequency offset from the carrier, for a power consumption of 20.8 mW and a figure-of-merit of 184 dBc/Hz) show that phase noise performances are close to the previously derived limits. A systematic cause of departure from ideal quadrature between QVCO signals is also analyzed and measured experimentally, and a compact LC-tank layout that removes this source of phase error is proposed. A TS-QVCO designed with this technique shows a phase-noise figure-of-merit improvement of 4 dB, compared to a previous implementation. The measured equivalent phase error for all QVCOs is between 0.6/spl deg/ and 1/spl deg/. (Less)
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author
publishing date
type
Contribution to journal
publication status
published
subject
in
IEEE Journal of Solid-State Circuits
volume
39
issue
11
pages
1883 - 1893
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • scopus:8344225290
ISSN
0018-9200
DOI
10.1109/JSSC.2004.835828
language
English
LU publication?
no
id
665cf6c5-0609-4f48-a907-9fae98e3d1aa (old id 1049722)
date added to LUP
2008-03-20 12:12:40
date last changed
2017-11-19 04:11:06
@article{665cf6c5-0609-4f48-a907-9fae98e3d1aa,
  abstract     = {This paper presents an analysis of phase noise in multiphase LC oscillators, and measurement results for several CMOS quadrature-voltage-controlled-oscillators (QVCOs) working in the 2-GHz frequency range. The phase noise data for a so-called BS-QVCO (-140 dBc/Hz or less at 3 MHz frequency offset from the carrier, for a power consumption of 20.8 mW and a figure-of-merit of 184 dBc/Hz) show that phase noise performances are close to the previously derived limits. A systematic cause of departure from ideal quadrature between QVCO signals is also analyzed and measured experimentally, and a compact LC-tank layout that removes this source of phase error is proposed. A TS-QVCO designed with this technique shows a phase-noise figure-of-merit improvement of 4 dB, compared to a previous implementation. The measured equivalent phase error for all QVCOs is between 0.6/spl deg/ and 1/spl deg/.},
  author       = {Andreani, Pietro and Wang, Xiaoyan},
  issn         = {0018-9200},
  language     = {eng},
  number       = {11},
  pages        = {1883--1893},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Journal of Solid-State Circuits},
  title        = {On the phase-noise and phase-error performances of multiphase LC CMOS VCOs},
  url          = {http://dx.doi.org/10.1109/JSSC.2004.835828},
  volume       = {39},
  year         = {2004},
}