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Simple Technique for High-Resolution Time-Delay and Group-Velocity Measurements at Radio Frequencies

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1 Author(s)

A simple technique for measuring the time delay a (modulated) radio-frequency signal experiences when passing through a medium or device is described. A carrier signal at the desired frequency is (sine) wave amplitude modulated (e. g., at 2 MHz). The modulated signal is passed through the medium or device, amplitude-detected, and compared in phase with the modulating signal from which the time delay is deduced. Time delays of a fraction of a nanosecond are easily measured.

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Instrumentation and Measurement, IEEE Transactions on  (Volume:18 ,  Issue: 3 )