Analysis and modeling of GaAs-based coupled microstrip lines

This paper describes one of the critical technologies of very high speed integrated circuits (VHSICs), the equivalent circuit model of the GaAs substrate based coupled microstrip lines. We present a method that extracts a frequency-dependent tabular RLGC model from mixed-mode S-parameters estimated by EM simulation (software HFSS). This paper shows that the using a conventional modal decomposition can extend a two-line method for a single transmission line to a two-line method for a symmetrical coupled pair. This method can be contributed to establish the component library and analyze crosstalk and delays for GaAs-based transmission lines used in VHSICs widely.