Analysis and design of a double-quadrature CMOS VCO for subharmonic mixing at Ka-band
(2008) In IEEE Transactions on Microwave Theory and Techniques 56(2). p.355-363- Abstract
- In this paper, we analyze the potentials of a four-phase 14-GHz CMOS voltage-controlled oscillator, tailored to a sub-harmonic receiver, for signal processing at Ka-band. When mild phase accuracies between in-phase and quadrature down-converted signals are required, the four-phase oscillator displays roughly the same phase noise figure-of-merit as quadrature oscillator counterparts. However, the operation at half-frequency leads to an improved performance due to a higher quality factor of the tuning varactors, and because the local oscillator circuitry and signal path run at different frequencies, relaxing coupling issues. A detailed time-variant analysis of phase noise in multiphase oscillators is introduced and validated by both... (More)
- In this paper, we analyze the potentials of a four-phase 14-GHz CMOS voltage-controlled oscillator, tailored to a sub-harmonic receiver, for signal processing at Ka-band. When mild phase accuracies between in-phase and quadrature down-converted signals are required, the four-phase oscillator displays roughly the same phase noise figure-of-merit as quadrature oscillator counterparts. However, the operation at half-frequency leads to an improved performance due to a higher quality factor of the tuning varactors, and because the local oscillator circuitry and signal path run at different frequencies, relaxing coupling issues. A detailed time-variant analysis of phase noise in multiphase oscillators is introduced and validated by both simulations and experiments. Prototypes realized in a 65-nm technology occupy an active area of 0.5 mm2 and show the following performances: a 26% frequency tuning range (from 12.2 to 15.9 GHz), maximum phase error from pi/4 of 2deg, and a phase noise of -110 dBc/Hz at 1 MHz from 14 GHz, while consuming 18 mA from 0.8-V supply. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1050671
- author
- Mazzanti, Andrea ; Sacchi, Enrico ; Andreani, Pietro LU and Svelto, Francesco
- organization
- publishing date
- 2008
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- CMOS direct conversion local oscillator (LO) generation millimeter waves multiphase phase noise subharmonic receivers voltage-controlled oscillator (VCO)
- in
- IEEE Transactions on Microwave Theory and Techniques
- volume
- 56
- issue
- 2
- pages
- 355 - 363
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- external identifiers
-
- wos:000253084800012
- scopus:38949100808
- ISSN
- 0018-9480
- DOI
- 10.1109/TMTT.2007.914365
- language
- English
- LU publication?
- yes
- id
- b804b207-7e1b-4fc8-aee2-8e50c5c87997 (old id 1050671)
- alternative location
- http://ieeexplore.ieee.org/iel5/22/4446042/04428279.pdf?tp=&arnumber=4428279&isnumber=4446042
- date added to LUP
- 2016-04-04 09:22:21
- date last changed
- 2022-01-29 17:33:04
@article{b804b207-7e1b-4fc8-aee2-8e50c5c87997,
abstract = {{In this paper, we analyze the potentials of a four-phase 14-GHz CMOS voltage-controlled oscillator, tailored to a sub-harmonic receiver, for signal processing at Ka-band. When mild phase accuracies between in-phase and quadrature down-converted signals are required, the four-phase oscillator displays roughly the same phase noise figure-of-merit as quadrature oscillator counterparts. However, the operation at half-frequency leads to an improved performance due to a higher quality factor of the tuning varactors, and because the local oscillator circuitry and signal path run at different frequencies, relaxing coupling issues. A detailed time-variant analysis of phase noise in multiphase oscillators is introduced and validated by both simulations and experiments. Prototypes realized in a 65-nm technology occupy an active area of 0.5 mm2 and show the following performances: a 26% frequency tuning range (from 12.2 to 15.9 GHz), maximum phase error from pi/4 of 2deg, and a phase noise of -110 dBc/Hz at 1 MHz from 14 GHz, while consuming 18 mA from 0.8-V supply.}},
author = {{Mazzanti, Andrea and Sacchi, Enrico and Andreani, Pietro and Svelto, Francesco}},
issn = {{0018-9480}},
keywords = {{CMOS direct conversion local oscillator (LO) generation millimeter waves multiphase phase noise subharmonic receivers voltage-controlled oscillator (VCO)}},
language = {{eng}},
number = {{2}},
pages = {{355--363}},
publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
series = {{IEEE Transactions on Microwave Theory and Techniques}},
title = {{Analysis and design of a double-quadrature CMOS VCO for subharmonic mixing at Ka-band}},
url = {{http://dx.doi.org/10.1109/TMTT.2007.914365}},
doi = {{10.1109/TMTT.2007.914365}},
volume = {{56}},
year = {{2008}},
}