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We present a technique to characterize and correct for linear and weakly nonlinear distortion introduced by the nonideal response of a wideband, high-frequency modulated-signal source. The magnitude and phase relationships between frequency components in a measured modulated signal are maintained by use of a calibrated equivalent-time sampling oscilloscope. The nonidealities of the oscilloscope and...
We examine the impact of characteristic impedance on mismatch corrections for temporal waveform calibrations based on high-speed electro-optic sampling measurements. We show that failing to measure and account for the characteristic impedance of coplanar lines can lead to statistically significant errors in the calibrations in both the time and frequency domains.
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