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.
, Hale, P.
, Jeavons, P.
, Schlager, J.
, Dienstfrey, A.
, Lee, J.
and Cho, C.
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 December 10, 2023)