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A TX VCO for WCDMA/EDGE in 90 nm RF CMOS

Andreani, Pietro LU ; Kozmin, Kirill; Sandrup, Per; Nilsson, Magnus and Mattsson, Thomas (2011) In IEEE Journal of Solid-State Circuits 46(7). p.1618-1626
Abstract
A VCO is implemented in an RF 90 nm CMOS process and covers the frequency range 2.55-4.08 GHz. Drawing 19 mA from 1.2 V, the phase noise at 20 MHz frequency offset from a 3.7 GHz carrier is -156 dBc/Hz, meeting the phase noise requirement for GSM/EDGE and SAW-less WCDMA transmitter after frequency division by 2 or by 4. A second version of the VCO covers an additional 4.90-5.75 GHz range, at the expense of a higher phase noise in the added band. In this way, all currently operational WCDMA/EDGE bands can be synthesized by a single VCO working at the double or quadruple of the desired band. A technique for shortening the transient response of the VCO during frequency tuning is also presented.
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Duplex frequency, EDGE, phase noise, radio frequency integrated, circuits, tuning range, voltage controlled oscillators, WCDMA
in
IEEE Journal of Solid-State Circuits
volume
46
issue
7
pages
1618 - 1626
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • wos:000292102400011
  • scopus:79959717280
ISSN
0018-9200
DOI
10.1109/JSSC.2011.2144030
language
English
LU publication?
yes
id
0afbcf64-c2c8-4233-833e-c63c9946cd66 (old id 2042325)
date added to LUP
2011-07-26 13:46:58
date last changed
2017-10-22 04:10:00
@article{0afbcf64-c2c8-4233-833e-c63c9946cd66,
  abstract     = {A VCO is implemented in an RF 90 nm CMOS process and covers the frequency range 2.55-4.08 GHz. Drawing 19 mA from 1.2 V, the phase noise at 20 MHz frequency offset from a 3.7 GHz carrier is -156 dBc/Hz, meeting the phase noise requirement for GSM/EDGE and SAW-less WCDMA transmitter after frequency division by 2 or by 4. A second version of the VCO covers an additional 4.90-5.75 GHz range, at the expense of a higher phase noise in the added band. In this way, all currently operational WCDMA/EDGE bands can be synthesized by a single VCO working at the double or quadruple of the desired band. A technique for shortening the transient response of the VCO during frequency tuning is also presented.},
  author       = {Andreani, Pietro and Kozmin, Kirill and Sandrup, Per and Nilsson, Magnus and Mattsson, Thomas},
  issn         = {0018-9200},
  keyword      = {Duplex frequency,EDGE,phase noise,radio frequency integrated,circuits,tuning range,voltage controlled oscillators,WCDMA},
  language     = {eng},
  number       = {7},
  pages        = {1618--1626},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Journal of Solid-State Circuits},
  title        = {A TX VCO for WCDMA/EDGE in 90 nm RF CMOS},
  url          = {http://dx.doi.org/10.1109/JSSC.2011.2144030},
  volume       = {46},
  year         = {2011},
}