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A 28 GHz SiGe QVCO with an I/Q phase error detector for an 81-86 E-band transceiver

Tired, Tobias LU ; Sjöland, Henrik LU orcid ; Bryant, Carl LU and Törmänen, Markus LU orcid (2015) ISIC 2014 (invited - special session) p.58-61
Abstract
This paper presents a 28 GHz QVCO intended to be used in an 81-86 GHz E-band transceiver. E-band transceivers using e.g. 16 QAM modulation schemes are sensitive to I/Q phase error. Already a three degree error significantly degrades the bit error rate, and careful control of the phase error of the 28 GHz QVCO is therefore required. In the presented design the phase error can be tuned using four varactors, each connected to one of the QVCO outputs. The phase error is detected in two cross-coupled active mixers, creating a DC-level proportional to the phase error. The accuracy of the detector has been verified by Monte Carlo simulations showing a 3 sigma phase error of one degree. The QVCO is designed in a SiGe process with f T = 200 GHz.... (More)
This paper presents a 28 GHz QVCO intended to be used in an 81-86 GHz E-band transceiver. E-band transceivers using e.g. 16 QAM modulation schemes are sensitive to I/Q phase error. Already a three degree error significantly degrades the bit error rate, and careful control of the phase error of the 28 GHz QVCO is therefore required. In the presented design the phase error can be tuned using four varactors, each connected to one of the QVCO outputs. The phase error is detected in two cross-coupled active mixers, creating a DC-level proportional to the phase error. The accuracy of the detector has been verified by Monte Carlo simulations showing a 3 sigma phase error of one degree. The QVCO is designed in a SiGe process with f T = 200 GHz. The current consumption is 14 mA from a 1.5 V supply and 57 mA from a 2.5 V supply. The 2.5 V supply is dedicated to the detector and output buffers. At 1 MHz offset the phase noise equals -105 dBc/Hz with a FOM of -181 dBc/Hz and a FOM T of -186 dBc/Hz. The die area equals 1.3 mm 2 . (Less)
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author
; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
2014 International Symposium on Integrated Circuits (ISIC)
pages
4 pages
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
conference name
ISIC 2014 (invited - special session)
conference location
Singapore
conference dates
2014-12-10 - 2014-12-12
external identifiers
  • scopus:84924301158
ISBN
978-1-4799-4833-8
DOI
10.1109/ISICIR.2014.7029519
language
English
LU publication?
yes
id
bf14b01a-b9a4-44ba-8bc1-748343e7eaf9 (old id 4647589)
date added to LUP
2016-04-04 14:41:40
date last changed
2024-01-04 00:54:10
@inproceedings{bf14b01a-b9a4-44ba-8bc1-748343e7eaf9,
  abstract     = {{This paper presents a 28 GHz QVCO intended to be used in an 81-86 GHz E-band transceiver. E-band transceivers using e.g. 16 QAM modulation schemes are sensitive to I/Q phase error. Already a three degree error significantly degrades the bit error rate, and careful control of the phase error of the 28 GHz QVCO is therefore required. In the presented design the phase error can be tuned using four varactors, each connected to one of the QVCO outputs. The phase error is detected in two cross-coupled active mixers, creating a DC-level proportional to the phase error. The accuracy of the detector has been verified by Monte Carlo simulations showing a 3 sigma phase error of one degree. The QVCO is designed in a SiGe process with f T = 200 GHz. The current consumption is 14 mA from a 1.5 V supply and 57 mA from a 2.5 V supply. The 2.5 V supply is dedicated to the detector and output buffers. At 1 MHz offset the phase noise equals -105 dBc/Hz with a FOM of -181 dBc/Hz and a FOM T of -186 dBc/Hz. The die area equals 1.3 mm 2 .}},
  author       = {{Tired, Tobias and Sjöland, Henrik and Bryant, Carl and Törmänen, Markus}},
  booktitle    = {{2014 International Symposium on Integrated Circuits (ISIC)}},
  isbn         = {{978-1-4799-4833-8}},
  language     = {{eng}},
  pages        = {{58--61}},
  publisher    = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
  title        = {{A 28 GHz SiGe QVCO with an I/Q phase error detector for an 81-86 E-band transceiver}},
  url          = {{http://dx.doi.org/10.1109/ISICIR.2014.7029519}},
  doi          = {{10.1109/ISICIR.2014.7029519}},
  year         = {{2015}},
}