In a general aspect, a method for transmitting data by inductive coupling can include applying, at a rate of a data-carrying signal, a plurality of bursts of a periodic signal to a tuned inductive antenna circuit. The method can also include producing, in the tuned inductive antenna circuit, an antenna signal. The antenna signal can generate a magnetic field. The method can further include delimiting an amplitude of each burst of the plurality of bursts of the periodic signal in accordance with an envelope signal having a rising edge and a falling edge. The delimiting the amplitude of each burst of the plurality of bursts of the periodic signal can include generating the plurality of bursts of the periodic signal using a set of points. The set of points can define, by discrete values, a burst of the plurality of bursts of the periodic signal.