On-chip implementation of compact electromagnetic bandgap structures for 60GHz applications

In this paper, four compact electromagnetic bandgap (EBG) structures are designed specifically for on-chip implementation. Miniaturized mushroom-like EBG structures are developed only using SiO₂ metal layers while being shielded from the lossy silicon substrate. These structures are designed for 60 GHz ultra-wideband (UWB) circuits when port isolation or suppression of power/ground noise is needed. An example of their application to improve isolation between on-chip dielectric-resonator antennas is demonstrated. As well, a novel flipped mushroom-like EBG design is proposed to reduce coupling between on-chip slot antennas showing 6 dB improvement at 60 GHz.