Cavity Model for a Patch Antenna Embedded with a Hybrid Ground Plane

An analytical method to characterise the farfield radiation pattern of a patch antenna embedded with a hybrid ground plane is presented using the Cavity Model. The hybrid ground plane is a two-layered structure with a Perfect Magnetic Conductor (PMC) stacked on top of a Perfect Electric Conductor (PEC) separated by a small distance. The model predicts an increase in the antenna’s directivity, which is validated through a full-wave simulation model by realising the PMC surface through an Artificial Magnetic Conductor (AMC) which is embedded into the patch antenna’s substrate.