The Impact of Combined Channel Mismatch Effects in Time-Interleaved ADCs

The performance of antijamming is limited by channel mismatch in global navigation satellite system (GNSS) antenna arrays receivers. Only when the amplitude and phase characteristics of each array channels are the same is the interference likely to be completely suppressed. This paper analyzes the impact on antijamming performance of channel mismatch. We built the model of channel mismatch and derived the impact on transfer function with space-time adaptive processor (STAP) of channel mismatch in theory. The impact factor of channel mismatch is proposed by the fuzzy transfer function, which could directly reflect the antijamming performance under channel mismatch. In addition, every characteristic in the channel mismatch model is analyzed. The analysis results show that the greatest impacts on antijamming performance are the range of amplitude wave and the group delay bias, while the influence of the number of amplitudes is next. As for the effect of group delay fluctuation is the smallest.

Download Full-text

An efficient postprocessor architecture for channel mismatch correction of time interleaved ADCs

2010 18th Iranian Conference on Electrical Engineering ◽

10.1109/iraniancee.2010.5507040 ◽

2010 ◽

Cited By ~ 5

Author(s):

Asgar Abbaszadeh ◽

Khosrov Dabbagh-Sadeghipour

Keyword(s):

Mismatch Correction ◽

Channel Mismatch ◽

Time Interleaved

Download Full-text

Channel Mismatch Calibration in Time-Interleaved ADCs based on One-Dimensional Optimization and Trigger

2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI) ◽

10.1109/icemi46757.2019.9101684 ◽

2019 ◽

Author(s):

Pan Zhixiang ◽

Ye Peng ◽

Yang Kuojun ◽

Huang Wuhuang ◽

Gao Jian

Keyword(s):

One Dimensional ◽

Channel Mismatch ◽

Time Interleaved ◽

Calibration In Time ◽

Dimensional Optimization

Download Full-text

The fast time-interleaved ADC channel mismatch calibration method based on equivalent sampling and dynamic reference point

2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI) ◽

10.1109/icemi46757.2019.9101419 ◽

2019 ◽

Author(s):

Xiang Qian ◽

Liu Hongqing ◽

Wu Hengkui ◽

Zhu Wenxing

Keyword(s):

Reference Point ◽

Calibration Method ◽

Fast Time ◽

Channel Mismatch ◽

Interleaved Adc ◽

Time Interleaved

Download Full-text

Explicit formula for channel mismatch effects in time-interleaved ADC systems

Proceedings of the 17th IEEE Instrumentation and Measurement Technology Conference [Cat. No. 00CH37066] ◽

10.1109/imtc.2000.848838 ◽

2002 ◽

Cited By ~ 7

Author(s):

N. Kurosawa ◽

K. Maruyama ◽

H. Kobayashi ◽

H. Sugawara ◽

K. Kobayashi

Keyword(s):

Explicit Formula ◽

Channel Mismatch ◽

Interleaved Adc ◽

Time Interleaved

Download Full-text

General analysis on the impact of phase-skew in time-interleaved ADCs

2008 IEEE International Symposium on Circuits and Systems ◽

10.1109/iscas.2008.4541343 ◽

2008 ◽

Cited By ~ 4

Author(s):

Manar El-Chammas ◽

Boris Murmann

Keyword(s):

General Analysis ◽

Time Interleaved ◽

The Impact

Download Full-text

Researches on Channel Mismatch Effects in Time-Interleaved ADC System

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.655-657.978 ◽

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.

Download Full-text