An Adaptive Synthesis Calibration Method for Time-Interleaved Sampling Systems

Metrology and Measurement Systems

Peng Ye¹  Huiqing Pan¹  Shulin Tian¹ 

关键词: time-interleaved sampling;    channel mismatch;    nonuniform;    adaptive;   

DOI  :  10.2478/v10178-010-0034-4

来源: Versita

【 摘 要 】

In a parallel time-interleaved data sampling system, timing and amplitude mismatches of this structure degrade the performance of the whole ADC system. In this paper, an adaptive blind synthesis calibration algorithm is proposed, which could estimate the timing, gain and offset errors simultaneously, and calibrate automatically. With no need of an extra calibration signal and redesign, it could efficiently and dynamically track the changes of mismatches due to aging or temperature variation. A fractional delay filter is developed to adjust the timing mismatch, which simplifies the design and decreases the cost. Computer simulations are also included to demonstrate the effectiveness of the proposed method.

【 授权许可】

Unknown