Title :
Dispersion characteristics of coupled microstrip with overlay on anisotropic dielectric substrate
Author :
Shibata, Kenji ; Hatori, Kenji
Author_Institution :
Kitami Institute of Technology, Kitami, Japan
Abstract :
The letter describes how one can obtain the equal effective dielectric constants of even and odd modes on the parallel-coupled microstrip at a frequency by using an anisotropic dielectric substrate with isotropic overlay. The frequency can be varied by using overlays of various thicknesses. The results suggest the possibility of realising a high-directivity coupler in the high-frequency microwave range.
Keywords :
dispersion (wave); permittivity; strip lines; waveguide couplers; anisotropic dielectric substrate; dispersion characteristics; effective dielectric constants; even modes; high-directivity coupler; high-frequency microwave range; isotropic overlay; odd modes; parallel-coupled microstrip;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19840015
