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Group delay measurements of a transmission line using single channel measurements

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2 Author(s)
Van Wassenhove, D. ; Vynckier, Gent, Belgium ; Schoukens, Johan

A method is presented for measuring the amplitude and group delay of the transfer function of a system using single-channel measurements. The technique is based on the use of broadband signals. A noise analysis is included to calculate the accuracy of the measurement results for a given signal-to-noise (S/N) ratio. The experiments showed that it is possible to get useful results, even if the S/N ratio is very low. As a main requirement, the digitizer has to have a sufficiently long memory to allow the use of time-averaging techniques

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Instrumentation and Measurement, IEEE Transactions on  (Volume:39 ,  Issue: 1 )