Open AccessNovel adaptive blind calibration technique of time‐skew mismatches for any channel time‐interleaved analogue‐to‐digital converters
Author(s) -
Qiu Yongtao,
Zhou Jie,
Liu Youjiang,
Zhang Guifu,
Liu Yig
Publication year - 2019
Publication title -
iet circuits, devices and systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.251
H-Index - 49
eISSN - 1751-8598
pISSN - 1751-858X
DOI - 10.1049/iet-cds.2018.5560
Subject(s) - spurious free dynamic range , skew , converters , calibration , electronic engineering , dynamic range , channel (broadcasting) , computer science , distortion (music) , signal (programming language) , spurious relationship , noise (video) , engineering , mathematics , amplifier , electrical engineering , telecommunications , voltage , cmos , artificial intelligence , statistics , machine learning , image (mathematics) , programming language
This article presented a novel digital blind calibration technique of time‐skew mismatches for time‐interleaved analogue‐to‐digital converter (TI‐ADC). Based on the frequency‐shifted and derived operation, the spurious signals could be reconstructed and subtracted from the sampled signal adaptively. The main advantage of the proposed calibration technique is applicable to any channel TI‐ADC and could achieve higher performance in comparison with the state‐of‐the‐arts. Numerical simulations and experimental results have demonstrated that the proposed calibration technique could significantly improve the signal to noise and distortion ratio (SNDR) and spurious‐free dynamic range (SFDR) of the TI‐ADC system.