NASA Technical Reports Server (NTRS) : Swept pdf

NASA Technical Reports Server (NTRS) : Swept

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Description of the Book:

Direct recording of group delay measurements on a system under temperature and stress tests employs modulated carrier frequency sweep over an S or X band. Reference path and test paths to separate detectors utilize a power divider e.g., a directional coupler or a hybrid T junction. An initially balanced phase comparator is swept in frequency by modulated carrier over the band of interest for different conditions of temperature and/or mechanical stress to obtain characteristic group delay curves

• Creator/s: NASA Technical Reports Server (NTRS
• Date: 4/11/1978
• Year: 1978
• Book Topics/Themes: NASA Technical Reports Server (NTRS), DELAY CIRCUITS, PHASE MODULATION, SIGNAL PROCESSING, SWEEP FREQUENCY, CARRIER FREQUENCIES, MEASURING INSTRUMENTS, TIME LAG, Trowbridge, D. L. [Inventor

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