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A comprehensive estimation method of phase error in the frequency-interleaving digital-to-analog converter
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  • Wenhao Zhao,
  • Shulin Tian,
  • Ke Liu,
  • Yindong Xiao
Wenhao Zhao
University of Electronic Science and Technology of China

Corresponding Author:vinhou@163.com

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Shulin Tian
University of Electronic Science and Technology of China
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Ke Liu
University of Electronic Science and Technology of China
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Yindong Xiao
University of Electronic Science and Technology of China
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Abstract

This letter studied the phase error in the frequency-interleaving digital-to-analog converter (FI-DAC) and proposed a comprehensive phase estimation method. Firstly, the model of FI-DAC system was established, and the phase error were considered that consists of three parts: time delay error, initial phase error and nonlinear phase error. By analyzing the phase function characteristics of the system, the least squares (LS) was used to linearly fit the phase functions of the non-overlapping bands to estimate both the time delay and initial phase of each sub-band channel. Then, the nonlinear phase error of the system was estimated by the difference between the system phase function and the estimated linear phase function. Finally, the effectiveness of the proposed estimation method was verified by the built FI-DAC test bench.
19 Aug 2022Submitted to Electronics Letters
21 Aug 2022Submission Checks Completed
21 Aug 2022Assigned to Editor
22 Aug 2022Reviewer(s) Assigned
23 Nov 2022Review(s) Completed, Editorial Evaluation Pending
24 Nov 2022Editorial Decision: Revise Minor
01 Dec 20221st Revision Received
01 Dec 2022Submission Checks Completed
01 Dec 2022Assigned to Editor
01 Dec 2022Review(s) Completed, Editorial Evaluation Pending
02 Dec 2022Reviewer(s) Assigned
13 Dec 2022Editorial Decision: Accept