A methodology to minimize power via resonance modes for 25Gbps+ high speed signal applications

In this paper, the effect of power via stub resonance on 25Gbps+ signaling is investigated. Two methods of removing lower frequency resonances caused by power vias are proposed for symmetrical high speed signal and power via structures. This paper analyses the effectiveness of the proposed methods by presenting simulations and experimental data. The signaling impact of power vias on conventional solutions versus the proposed methods will be presented. Data shows an improvement of seven orders of magnitude in BER at 25Gbps+ data rate.