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An Investigation of Dielectric Rod as Wave Guide

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1 Author(s)
Chandler, C.H. ; RCA Laboratories Division, Radio Corporation of America, Princeton, New Jersey

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An experimental investigation of dielectric rod as wave guide indicates that the guiding effect is retained even when the rod is only a fraction of a wave‐length in diameter. The greater part of the guided energy is then outside the dielectric, so that a very low loss wave guide results. Measurements of performance made at 1.25 cm indicate attenuations down to 0.004 decibel per meter in polystyrene rod, and show good agreement with theoretical predictions. A resonator utilizing the dielectric‐rod wave guide is described, in which a maximum Q of approximately 53,000 was observed.

Published in:

Journal of Applied Physics  (Volume:20 ,  Issue: 12 )