Magneto-inductive (MI) communication is a viable technology for wireless communications in underwater and underground environments.In this paper, a new design for an MI transmitter is presented.Unlike conventional MI transmitters that utilize coiled loops or solenoids to generate magnetic fields, Caps we demonstrate the feasibility and advantages of using a rotating permanent magnet.We also present and experimentally verify a modulation technique that does not involve changing the Cupcake Toppers rotational speed of the magnet.By electrically changing the permeability of a surrounding shield, the fields from the rotating magnet are amplitude modulated.
Our findings suggest that increased efficiency and bandwidth can be realized compared to conventional MI transmitters.