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An IIP2 Digital Calibration Technique for Passive CMOS Down-Converters
KTH, Skolan för informations- och kommunikationsteknik (ICT), Integrerade komponenter och kretsar.
KTH, Skolan för informations- och kommunikationsteknik (ICT), Integrerade komponenter och kretsar.ORCID-id: 0000-0002-4691-2318
KTH, Skolan för informations- och kommunikationsteknik (ICT), Integrerade komponenter och kretsar.
KTH, Skolan för informations- och kommunikationsteknik (ICT), Integrerade komponenter och kretsar.ORCID-id: 0000-0003-3802-7834
2010 (engelsk)Inngår i: IEEE INT SYMP CIRC SYST PROC, New York: IEEE , 2010, s. 825-828Konferansepaper, Publicerat paper (Fagfellevurdert)
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.

sted, utgiver, år, opplag, sider
New York: IEEE , 2010. s. 825-828
Serie
IEEE International Symposium on Circuits and Systems, ISSN 0271-4302
Emneord [en]
Fabrics; Intermodulation; Millimeter wave devices; Mixers (machinery); Signal receivers
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-32138DOI: 10.1109/ISCAS.2010.5537437ISI: 000287216001017Scopus ID: 2-s2.0-77955995727ISBN: 978-1-4244-5309-2 (tryckt)OAI: oai:DiVA.org:kth-32138DiVA, id: diva2:409274
Konferanse
International Symposium on Circuits and Systems Nano-Bio Circuit Fabrics and Systems (ISCAS 2010)
Merknad
QC 20110407Tilgjengelig fra: 2011-04-07 Laget: 2011-04-07 Sist oppdatert: 2012-03-20bibliografisk kontrollert

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