A Statistic-Based Calibration Method for TIADC System
Joint Authors
Ye, Peng
Yang, Kuojun
Zhang, Peng
Zheng, Yuanjin
Tian, Shulin
Source
Mathematical Problems in Engineering
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-02-22
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Time-interleaved technique is widely used to increase the sampling rate of analog-to-digital converter (ADC).
However, the channel mismatches degrade the performance of time-interleaved ADC (TIADC).
Therefore, a statistic-based calibration method for TIADC is proposed in this paper.
The average value of sampling points is utilized to calculate offset error, and the summation of sampling points is used to calculate gain error.
After offset and gain error are obtained, they are calibrated by offset and gain adjustment elements in ADC.
Timing skew is calibrated by an iterative method.
The product of sampling points of two adjacent subchannels is used as a metric for calibration.
The proposed method is employed to calibrate mismatches in a four-channel 5 GS/s TIADC system.
Simulation results show that the proposed method can estimate mismatches accurately in a wide frequency range.
It is also proved that an accurate estimation can be obtained even if the signal noise ratio (SNR) of input signal is 20 dB.
Furthermore, the results obtained from a real four-channel 5 GS/s TIADC system demonstrate the effectiveness of the proposed method.
We can see that the spectra spurs due to mismatches have been effectively eliminated after calibration.
American Psychological Association (APA)
Yang, Kuojun& Tian, Shulin& Ye, Peng& Zhang, Peng& Zheng, Yuanjin. 2015. A Statistic-Based Calibration Method for TIADC System. Mathematical Problems in Engineering،Vol. 2015, no. 2015, pp.1-9.
https://search.emarefa.net/detail/BIM-1074475
Modern Language Association (MLA)
Yang, Kuojun…[et al.]. A Statistic-Based Calibration Method for TIADC System. Mathematical Problems in Engineering No. 2015 (2015), pp.1-9.
https://search.emarefa.net/detail/BIM-1074475
American Medical Association (AMA)
Yang, Kuojun& Tian, Shulin& Ye, Peng& Zhang, Peng& Zheng, Yuanjin. A Statistic-Based Calibration Method for TIADC System. Mathematical Problems in Engineering. 2015. Vol. 2015, no. 2015, pp.1-9.
https://search.emarefa.net/detail/BIM-1074475
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1074475