TY - JOUR
T1 - Digital Iterative Harmonic Rejection and Image Cancellation for LPF-Less Frequency-Interleaved Analog-to-Digital Converters
AU - Song, Jinpeng
AU - Tian, Shulin
AU - Hu, Yu Hen
AU - Ye, Peng
N1 - Publisher Copyright:
© 2004-2012 IEEE.
PY - 2019/12
Y1 - 2019/12
N2 - The frequency-interleaved analog-to-digital converter features large bandwidth, high speed, medium-to-high resolution with respectable jitter robustness, albeit suffering from circuit impairments such as spectral leakages, harmonic interferences, in-phase/quadrature and aliasing images. For the first time, a digital compensation framework is introduced to minimize these impacts simultaneously. In this framework, channel recombination is performed before calibration. It circumvents the needs for analog harmonic rejection and channel separation, thus enabling significant simplification of the complex analog frontend design. A comprehensive system model that incorporates all the aforementioned distortions is formulated and leads to an iterative solution. Given the mismatch parameters, simulation outcomes validate the feasibility of this proposed framework and promise impressive performance benefits.
AB - The frequency-interleaved analog-to-digital converter features large bandwidth, high speed, medium-to-high resolution with respectable jitter robustness, albeit suffering from circuit impairments such as spectral leakages, harmonic interferences, in-phase/quadrature and aliasing images. For the first time, a digital compensation framework is introduced to minimize these impacts simultaneously. In this framework, channel recombination is performed before calibration. It circumvents the needs for analog harmonic rejection and channel separation, thus enabling significant simplification of the complex analog frontend design. A comprehensive system model that incorporates all the aforementioned distortions is formulated and leads to an iterative solution. Given the mismatch parameters, simulation outcomes validate the feasibility of this proposed framework and promise impressive performance benefits.
KW - Analog-to-digital converter
KW - I/Q imbalance
KW - frequency-interleaving
KW - harmonic rejection
KW - iterative calibration
KW - jitter
KW - spectral leakage
UR - http://www.scopus.com/inward/record.url?scp=85076671286&partnerID=8YFLogxK
U2 - 10.1109/TCSII.2019.2895341
DO - 10.1109/TCSII.2019.2895341
M3 - Article
AN - SCOPUS:85076671286
SN - 1549-7747
VL - 66
SP - 2072
EP - 2076
JO - IEEE Transactions on Circuits and Systems II: Express Briefs
JF - IEEE Transactions on Circuits and Systems II: Express Briefs
IS - 12
M1 - 8626146
ER -