The compatible effects of gyrotropy and chirality in biaxially bianisotropic chiral- and chiroferrite-ferrite microstrip line structures

Abstract

In this paper, both gyrotropy and chirality are introduced in some composite bianisotropic chiral-and chiroferrite-ferrite microstrip line structures. The propagation characteristics are investigated using the generalized exponential technique in the spectral domain combined with the Galerkin's method. These microstrip structures include shielded single, edge-coupled, broadside coupled, and bilateral edge-coupled geometries. Numerical calculations are performed so as to examine the compatible effects of changing different variables associated with the operating frequency, gyrotropy and chirality parameters on the dominant mode propagation constant or the differential phase shifter of forward and backward waves, respectively. It is shown that the influences of chirality are just diverse, and it could be exploited as a new freedom to adjust the differential phase in chiral-and chiroferrite-ferrite microstrip lines. Such compatible properties are useful for the design of new planar microstrip integrated devices. Copyright © 1999 John Wiley & Sons, Ltd.