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Loading and Coupling Effects of Standing-Wave Detectors

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1 Author(s)
Tomiyasu, K. ; Formerly, Cruft Laboratory, Harvard University, Cambridge, Mass.; now, Sperry Gyroscope Co., Great Neck, L. I., N.Y.

When measuring impedances on transmission lines, insensitive standing-wave detectors have the effect of yielding lower standing-wave ratios than the true values. Double-hump distribution curves are shown to be the result of very tight coupling of the detector. Detectors than can be represented by a susceptance component may indicate unsymmetrical distribution curves. Sensitive detectors used on transmission lines having low power levels can introduce tight coupling effects. Conditions are given for a loosely coupled detector.

Published in:

Proceedings of the IRE  (Volume:37 ,  Issue: 12 )