Signal and power integrity analysis for the novel power plane of EBG structure in high-speed mixed signal systems

In this paper, a novel power plane of electromagnetic bandgap (EBG) structure for wideband mitigation of simultaneous switching noise (SSN) in mixed signal systems is proposed. Complementary split ring resonator (CSRR) with inherent filtering characteristic is utilized for constituting EBG unit cells. From the simulated and measured results of the proposed EBG structure, a wideband suppression of SSN ranges from 0.56 GHz to 5.88 GHz is achieved with a high mitigation level of -40 dB. Furthermore, the influence of the proposed power plane of EBG structure on the signal integrity (SI) is investigated in the time and frequency domains, respectively. The results show that the SI performance can be improved significantly by using differential pairs for the signals.