EBG structure with T-shaped slits for suppression of simultaneous switching noise

ABSTRACT In this article, electromagnetic band gap (EBG) structure with T‐shaped slits is proposed for suppressing simultaneous switching noise. T‐shaped slits, bridges, and the solid ground plane are used to constitute the novel L‐EBG structure. Considering a threshold of −35 dB, the stopband of the proposed EBG structure is about 7.29 GHz which is 1.68 GHz wider than that of a conventional L‐EBG structure. Measurement results confirm the wide bandwidth of the prototype that is predicted in simulations. In addition, the lower and upper cutoff frequencies are estimated by use of lumped‐component circuit models and parallel‐plate waveguide models, respectively. Moreover, the IR‐drop and dc resistance are examined through simulations. Additionally, common signal integrity issues in a power distribution network such as IR‐drop, DC resistance, and eye diagrams are investigated and compared to a conventional L‐EBG structure. © 2014 Wiley Periodicals, Inc. Int J RF and Microwave CAE 25:419–426, 2015.