International Symposium on Antennas and Propagation


Session Number:3D08



Circuit Model Analysis for Traces Crossing Slotted Ground Plane

Jongkyung Lee,  Kibum Jung,  Yeonchoon Chung,  Jaehoon Choi,  


Publication Date:2008/10/27

Online ISSN:2188-5079


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Recently, there has been a growing interest for slotted ground plane structures. It is common to introduce slots in the power/ground planes in high-speed printed circuit boards (PCBs) design. In mixed signal circuits, split power/ground planes can isolate a noisy digital circuit from the sensitive analog circuit. Slots in the power/ground planes are also employed in PCBs with multiple power supplies in order to provide DC isolation among different supplies [1]. However, power/ground partitioning generates undesired electromagnetic effects such as signal integrity (SI) degradation, electromagnetic interference (EMI) and ground bounce in general [2]. To understand these problems systematically, this paper proposes a simple and accurate equivalent circuit model, which provides clear insight into the coupling mechanism between the microstrip line and the slot.