A new pinwheel meander-perforated plane structure for noise suppression in system-on-package

As the market of wearable and internet of things (IoT) expands, there is a strong demand of shrinking the size of System-on-Package (SoP). In this paper, we propose a new electromagnetic bandgap structure (EBG) to mitigate the noise coupling within SoPs. EBGs have been widely used in printed circuit boards (PCB). Thus, the EBG size reduction is critical for integrating it in the package. The proposed structure has a unique noise suppressing pinwheel meander perforated plane structure (PMPP) that can be used in small size package. Critical problem of EBG's size reduction is shifting the suppression frequency to higher. Therefore, we propose to combine the EBG structure, meander-line, and pinwheel shaped patch to reduce size of EBG unit cell from 12.2mm×12.2mm to 2.44mm×2.44mm while maintaining the suppression frequency and bandwidth. The stop band bandwidth of proposed structure is 3.58∼12.83GHz.