Design of crosstalk compensation passive equalizers for high-speed differential signaling on 2.5D-IC interposer

In this paper, crosstalk compensation equalizers for high-speed differential signaling on the silicon-based interposer were proposed. By compensating the amount of crosstalk on each metal line of the victim differential pair, crosstalk can be rejected for common noise of the differential signaling. To design crosstalk compensation passive equalizers, Metal-Insulator-Metal (MIM) capacitor is connected between an aggressor metal line and a further victim metal line which makes same capacitive crosstalk on a victim differential pair. In other way of design equalizer, Twisted Differential Lines is also proposed to make same crosstalk on a victim differential pair to be eliminated as common noise rejection. These equalizers result in the wide-band channel equalization. The effective performances of these passive equalizers are designed by Full EM Simulation tool and successfully demonstrated and verified. S parameter, output signal voltage, and eye-diagrams of Far-end Crosstalk (FEXT) are analyzed in frequency and time domain.