A Polynomial-Based Time-Varying Filter Structure for the Compensation of Frequency-Response Mismatch Errors in Time-Interleaved ADCs
2009 (English)In: IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING, ISSN 1932-4553, Vol. 3, no 3, 384-396 p.Article in journal (Refereed) Published
This paper introduces a structure for the compensation of frequency-response mismatch errors in M-channel time-interleaved analog-to-digital converters (ADCs). It makes use of a number of fixed digital filters, approximating differentiators of different orders, and a few variable multipliers that correspond to parameters in polynomial models of the channel frequency responses. Whenever the channel frequency responses change, which occurs from time to time in a practical time-interleaved ADC, it suffices to alter the values of these variable multipliers. In this way, expensive on-line filter design is avoided. The paper includes several design examples that illustrate the properties and capabilities of the proposed structure.
Place, publisher, year, edition, pages
2009. Vol. 3, no 3, 384-396 p.
Frequency-response mismatch errors, polynomial impulse responses, time-interleaved analog-to-digital converters, time-varying compensation filters
National CategoryEngineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-18944DOI: 10.1109/JSTSP.2009.2020554OAI: oai:DiVA.org:liu-18944DiVA: diva2:222132