International Symposium on Antennas and Propagation
Circuit Model Analysis for Traces Crossing Slotted Ground Plane
Jongkyung Lee, Kibum Jung, Yeonchoon Chung, Jaehoon Choi,
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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 . However, power/ground partitioning generates undesired electromagnetic effects such as signal integrity (SI) degradation, electromagnetic interference (EMI) and ground bounce in general . 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.