Devices and systems including transmitters for broadband magnetic field communication

A transmitting device performing magnetic field communication, the transmitting device comprising:

• a first current mode power supply having a voltage and one or more inductors connected thereto;
• a power amplifier connected to the first current mode power supply;
• a first matching impedance unit including a first capacitor, connected to the power amplifier;
• and
• a first magnetic field antenna including a coil and a resistor, connected in parallel with the first matching impedance unit,
• wherein an input data input to the transmitter is converted into a digital signal by the first field-programmable gate array (FPGA),
• wherein the power amplifier performs a switching and amplifying operation based on the digital signal converted by the first FPGA, and
• wherein the first magnetic field antenna transmits the digital signal switched and amplified by the power amplifier to a second magnetic field antenna included in a receiving device.

A receiving device that performs magnetic field communication, the receiving device comprising:

• a second current mode power supply unit having a voltage and one or more inductors connected thereto;
• a filter unit connected to the second current mode power supply unit;
• a second matching impedance unit including a second capacitor connected to the filter unit;
• and
• a second magnetic field antenna including a coil and a resistor connected in parallel with the second matching impedance unit,
• wherein a data signal input from the transmitter through the second magnetic field antenna is filtered by the filter unit, and
• wherein the filtered data signal is demodulated by a second field-programmable gate array (FPGA) including a demodulator.