A Passive Equalizer Optimization Method Based on Time-Domain Inter-Symbol Interference (ISI) Cancellation Technique

In this letter, a channel loss equalization method based on a time-domain inter-symbol interference (ISI) cancellation technique for passive interconnects is proposed. The proposed method can be applied to conventional passive equalizer designs that intentionally suppress the low-frequency and dc components of passive channel responses to compensate for the frequency-dependent losses. An R-L passive equalizer design composed of surface mount inductors and a resistor was employed for validation of the proposed method. With the proposed channel equalization method, it was demonstrated that the ISIs were successfully removed with a significantly improved eye-opening and timing margin.