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



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


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


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


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], (Accessed May 28, 2024)


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Created May 22, 2015, Updated November 10, 2018