Phase Shift Studies in Ferrite-Dielectric Loaded Coaxial Lines at 2200 Mc

Abstract

Results are presented of an experimental study which was undertaken to determine the parameters which affect total and differential phase shifts in ferrite-dielectric loaded coaxial lines. The dependence of phase shift per unit length on the parameters of dielectric angle, ferrite cross-sectional area, and dc magnetic field are shown for a 78-in. coaxial line. These experimental results are compared to those computed by Button for a 158-in. coaxial line and found to agree quite well qualitatively. Differential phase shifts of 300° per db loss were obtained for the best experimental results, and the study has shown that the theory developed by Button correctly predicts the parameters necessary to obtain large differential phase shift in ferrite-dielectric lines.