CROSS-TALK PREDICTIONS AND REDUCING TECHNIQUES FOR HIGH SPEED GAAS DIGITAL ICS.

Methods of analyzing and predicting high-speed digital signal transmission properties in GaAs integrated circuits are presented, and a cross-talk noise reduction method is proposed on the basis of simulation results. The transmitted signal and the cross-talk noise wave form have been simulated by the time-domain transmission line analysis program developed by A. Iida et al. (1984). Cross-talk noises in GaAs have been found to be minimized by a low dielectric constant interlayer between the GaAs wafer and lines. Some experimental data, using ceramic substrates instead of GaAs wafers, agreed with predicted values.