Directivity Pattern of Different Coil Structures for Magneto-Coupled Communication Systems

Magneto-Coupled (MC) systems are best suited for underwater wireless sensor networks applications that are short range, high-data-rate and require low power consumption. MC systems are very sensitive to orientation and mapping the directionality pattern can highly predict the communication performance. In this work, we present a study of directivity pattern of circular and rectangular coils and also propose a hexagonal coil structure for magneto-coupled communication systems. Experiments are performed in the lab and it is observed that the directivity can be improved when hexagonal coil is used as a transmitter and circular coil is used as a receiver.