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Joint Blind Calibration for Mixed Mismatches in Two-Channel Time-Interleaved ADCs
National University of Def Technology, Peoples R China.
Linköpings universitet, Institutionen för systemteknik, Kommunikationssystem. Linköpings universitet, Tekniska fakulteten.
National University of Def Technology, Peoples R China.
National University of Def Technology, Peoples R China.
2015 (Engelska)Ingår i: IEEE Transactions on Circuits and Systems Part 1: Regular Papers, ISSN 1549-8328, E-ISSN 1558-0806, Vol. 62, nr 6, s. 1508-1517Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

To further enhance the dynamic performance of time-interleaved analog-to-digital converters (TI-ADCs), both linear and nonlinear mismatches should be estimated and compensated for. This paper introduces a method for joint calibration of several types of linear and nonlinear mismatch errors in two-channel TI-ADCs. To demonstrate the generality of this method, we take different scenarios into account, including static and dynamic mixed mismatch models. The proposed method utilizes a normalized least-mean square (N-LMS) algorithm as well as a certain low degree of oversampling for the overall converter to estimate and compensate for the mixed mismatch errors. The calibration performance and computational complexity are investigated and evaluated through simulations.

Ort, förlag, år, upplaga, sidor
Institute of Electrical and Electronics Engineers (IEEE) , 2015. Vol. 62, nr 6, s. 1508-1517
Nyckelord [en]
Adaptive calibration; analog-to-digital converter; cascaded structure; joint calibration; linear mismatches; mixed mismatches; nonlinear mismatches; time interleaving
Nationell ämneskategori
Elektroteknik och elektronik
Identifikatorer
URN: urn:nbn:se:liu:diva-120237DOI: 10.1109/TCSI.2015.2418835ISI: 000356935700007OAI: oai:DiVA.org:liu-120237DiVA, id: diva2:842626
Tillgänglig från: 2015-07-21 Skapad: 2015-07-20 Senast uppdaterad: 2017-12-04

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