A subspace based channel mismatch estimator for time-interleaved ADC systems

2020 ◽  
Author(s):  
Lun MA
Keyword(s):  
Channel Mismatch ◽  
Interleaved Adc ◽  
Time Interleaved

Researches on Channel Mismatch Effects in Time-Interleaved ADC System

2013 ◽  
Vol 655-657 ◽  
pp. 978-983
Author(s):  
Hui Yong Sun ◽  
Peng Cao
Keyword(s):  
High Speed ◽  
Dynamic Range ◽  
Signal To Noise Ratio ◽  
Mismatch Error ◽  
Signal To Noise ◽  
Gain Error ◽  
Channel Mismatch ◽  
High Speed Data Acquisition ◽  
Interleaved Adc ◽  
Time Interleaved

The Time-Interleaved ADC（TIADC) is an effective method for implement ultra high-speed data acquisition. However, the errors of channel mismatch are seriously degrade the signal-to-noise ratio of the system, such as Time-skew error, Gain error and Offset error. This paper have done some researches and analysis, and given the modeling of the three channels mismatch. What's more, it also given a detailed analysis of error and the method of measure it, derived the formula of signal to noise and distortion ratio(SINAD) and spurious free dynamic range(SFDR). All of them provide a reference for the tolerance range of TIADC channel mismatch error. Meanwhile, the result of this paper has provided a theoretical basis for eliminating TIADC channel mismatch error.

Research of Channel Dismatch Errors in Parallel AD Acquisition System Based on FPGA

2011 ◽  
Vol 201-203 ◽  
pp. 2126-2131
Author(s):  
Xing Ling Shao ◽  
Wei Yang ◽  
Zheng Yan Wang ◽  
Wen Dong Zhang
Keyword(s):  
Feature Extraction ◽  
Acquisition System ◽  
Echo Signal ◽  
Large Bandwidth ◽  
Channel Mismatch ◽  
Radar Echo ◽  
Explicit Analysis ◽  
Interleaved Adc ◽  
Time Interleaved

With the development of modem broadband radar, amount of reaserchers focus on broadband radar echo signal acquisitions and feature extraction of the target. Due to the large bandwidth as high as several MHz, the time interleaved ADC system is playing an important in radar echo systems, but this structure will bring in channel dismatch errors. The paper gave an explicit analysis of such three channel mismatch errors, and established the formulas of spectrum when all three mismatch errors exist together. Then presented the measure errors algorithm combined three errors according to the formulas of spectrum and the effective calibration algorithm．The algorithm was implemented in FPGA at last.

scholarly journals Explicit analysis of channel mismatch effects in time-interleaved ADC systems

2001 ◽  
Vol 48 (3) ◽  
pp. 261-271 ◽  
Author(s):  
N. Kurosawa ◽  
H. Kobayashi ◽  
K. Maruyama ◽  
H. Sugawara ◽  
K. Kobayashi
Keyword(s):  
Channel Mismatch ◽  
Explicit Analysis ◽  
Interleaved Adc ◽  
Time Interleaved

A 56-GS/s 8-bit Time-Interleaved ADC With ENOB and BW Enhancement Techniques in 28-nm CMOS

2019 ◽  
Vol 54 (3) ◽  
pp. 821-833 ◽  
Author(s):  
Kexu Sun ◽  
Guanhua Wang ◽  
Qing Zhang ◽  
Salam Elahmadi ◽  
Ping Gui
Keyword(s):  
Interleaved Adc ◽  
Time Interleaved ◽  
28 Nm
Sign in / Sign up

Export Citation Format

Share Document