Simultaneous Switching Noise Suppression Using Nickel-Ferrite Thin Films

Abstract

Abstract In this article, magnetic materials are employed to eliminate the ground bounce noise or simultaneous switching noise in high-speed digital circuits. The nickel film, deposited on a sapphire substrate by RF-sputter, was applied to suppress simultaneous switching noise. The proposed structure can efficiently restrain the simultaneous switching noise with broadband (totally 16GHz), and the ground bounce noise can be significantly lessened over 90%. Besides, the proposed structure does not produce undesired resonant peaks in the lower frequencies, and the electromagnetic interference problems are solved.