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An IIP2 Digital Calibration Technique for Passive CMOS Down-Converters
KTH, School of Information and Communication Technology (ICT), Integrated Devices and Circuits.
KTH, School of Information and Communication Technology (ICT), Integrated Devices and Circuits.ORCID iD: 0000-0002-4691-2318
KTH, School of Information and Communication Technology (ICT), Integrated Devices and Circuits.
KTH, School of Information and Communication Technology (ICT), Integrated Devices and Circuits.ORCID iD: 0000-0003-3802-7834
2010 (English)In: IEEE INT SYMP CIRC SYST PROC, New York: IEEE , 2010, 825-828 p.Conference paper, Published paper (Refereed)
Abstract [en]

The IIP2 requirement in fully integrated direct-conversion receivers using FDD duplexing is prohibitively high and demands the use of an external filter in order to attenuate the leakage from the transmitter. This paper presents a digital calibration technique for passive CMOS down-converters that allows a direct conversion receiver achieve the requirements without external filtering. A Least-Mean-Square optimization algorithm is used in order to reduce the low-frequency second-order intermodulation product. The algorithm controls the digital calibration structures at the biasing of the passive mixer and adapts them until the second order intermodulation drops below the noise level. The method is tested by calibrating a 1.2-V 65nm CMOS passive mixer targeting UMTS/LTE applications at several corner conditions including worst case mismatches in the switching pairs.

Place, publisher, year, edition, pages
New York: IEEE , 2010. 825-828 p.
Series
IEEE International Symposium on Circuits and Systems, ISSN 0271-4302
Keyword [en]
Fabrics; Intermodulation; Millimeter wave devices; Mixers (machinery); Signal receivers
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-32138DOI: 10.1109/ISCAS.2010.5537437ISI: 000287216001017Scopus ID: 2-s2.0-77955995727ISBN: 978-1-4244-5309-2 (print)OAI: oai:DiVA.org:kth-32138DiVA: diva2:409274
Conference
International Symposium on Circuits and Systems Nano-Bio Circuit Fabrics and Systems (ISCAS 2010)
Note
QC 20110407Available from: 2011-04-07 Created: 2011-04-07 Last updated: 2012-03-20Bibliographically approved

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Tao, ShaRusu, Ana

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
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Output format
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