Novel Electromagnetic Bandgap with Triangular Unit Cells for Ultra-Broadband Suppression of Simultaneous Switching Noise

Abstract

To build a stable power distribution network for high-speed digital systems, simultaneous switching noise (SSN) should be sufficiently suppressed in multi-layer PCBs and packages. In this paper, a novel hybrid uni-planar compact electromagnetic bandgap (UC-EBG) with two triangular-type unit cells designed on power/ground planes is proposed for the ultra-broadband suppression of SSN. The SSN suppression performance of the proposed structure is validated both numerically and experimentally. A -35dB suppression bandwidth for SSN is achieved, starting at 800MHz and extending to 15GHz and beyond, thereby covering almost the entire noise band.