Title :
Loading and Coupling Effects of Standing-Wave Detectors
Author_Institution :
Formerly, Cruft Laboratory, Harvard University, Cambridge, Mass.; now, Sperry Gyroscope Co., Great Neck, L. I., N.Y.
Abstract :
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.
Keywords :
Coupling circuits; Detectors; Impedance measurement; Laboratories; Power transmission lines; Probes; Resonance; Transmission line measurements; Transmission line theory; Voltage;
Journal_Title :
Proceedings of the IRE
DOI :
10.1109/JRPROC.1949.230281
