Calibration of channel mismatch in time-interleaved real-time digital oscilloscopes

Published

May 22, 2015

Author(s)

Jeffrey A. Jargon, Paul D. Hale, Peter J. Jeavons, John B. Schlager, Andrew M. Dienstfrey, Joo-Gwang Lee, Chihyun Cho

Abstract

A novel method is proposed for the calibration of channel mismatch in a time-interleaved real- time digital oscilloscope (RTDO). The method only requires a transfer function of time- interleaved ADCs (TIADCs), and also proposes measurement schemes of the transfer function. The accuracy of the method is determined by the noise produced after the interleaving process. To validate the proposed method, we measure two-tone signals using a commercial RTDO. The calibrated results clearly show signals at spurious frequencies are substantially reduced.

Proceedings Title

ARFTG 85th Microwave Measurement Conference

Conference Dates

May 22, 2015

Conference Location

Phoenix, AZ

Pub Type

Conferences

Download Paper

DOI Link

Keywords

real-time oscilloscope, spurious frequencies, time-interleaved analog-to-digital converters

Citation

Jargon, J. , Hale, P. , Jeavons, P. , Schlager, J. , Dienstfrey, A. , Lee, J. and Cho, C. (2015), Calibration of channel mismatch in time-interleaved real-time digital oscilloscopes, ARFTG 85th Microwave Measurement Conference , Phoenix, AZ, [online], https://doi.org/10.1109/ARFTG.2015.7162896 (Accessed October 21, 2025)