Dynamic bandwidth extension of coil for underwater magneto-inductive communication

In this paper, an underwater magneto-inductive communication front-end operating at a center frequency of 1 MHz is described, where for a 1-meter communication range, the magneto-inductive bandwidth is limited to 40 kHz. It is shown that by dynamically adjusting the resonant frequency of the magnetic coil the system bandwidth can be extended by a factor of three, thus increasing the throughput.