Features of cylindrical waveguides containing gyromagnetic media

Abstract

A number of results are presented of computations of the electromagnetic field components and density of energy flow, as functions of position in the transverse plane, for the H11 mode in a cylindrical waveguide of radius a containing a concentric ferrite rod of radius b. Typical values are chosen for the ferrite properties, and three values of a (normalized with respect to wavelength) that are likely to be found in practice. Values of b/a ranging from 0 to 1 are taken.This paper continues and concludes the work published earlier by the author on cylindrical waveguides with ferrite. In the present work, the aim is not only to present field components and power distributions for given values of a and b, but also to show how these vary as a and b vary. The results are discussed in relation to each other and to the phase constant curves previously obtained. It is concluded that the behaviour of these cylindrical systems is mainly dependent not on the ratio b/a but on b alone.