Broadband suppression of SSN and radiated emissions using high-DK thin film EBG power distribution network for high-speed digital PCB applications

Abstract

In this paper, the great advantages of a high dielectric constant thin film EBG power distribution network (PDN) for the suppression of power/ground noises and radiated emissions in high-performance multi-layer digital PCBs were experimentally demonstrated. Five-layer test PCBs were fabricated and their self PDN impedance and S/sub 21/ measured. The power plane noises and radiated emissions were measured, investigated and related to the PDN impedance. This successfully demonstrated that the band-gap of the EBG was extended more than three times, covering a range from 300 MHz to 3.6 GHz using feasible EBG cell size (1 cm /spl times/ 1 cm), the power plane noise was reduced greatly over a broadband spectrum including hundreds of MHz range and the radiated emission was suppressed by 22 dB owing to the outstanding noise isolation efficiency of the high dielectric constant thin film EBG PDN.