Coupled-mode model of dispersion in microstrip

Abstract

A coupled-mode model for dispersion in microstrip is developed which predicts dispersion for a wide range of microstrip configurations (2 ≤ εr ≤ 104, 0.025 in ≤ h ≤ 0.125 in and 0.9 ≤ w/h ≤ 6). The expression for the coupling coefficient is derived using qualitative arguments and experimental results, and is convenient for design purposes of microstrip components.