Device and method for regulating voltage swing across an antenna of a near-field communications device

An electronic device for processing near-field communication signals, the electronic device comprising:

• first and second antenna connection terminals for connection to a near-field antenna;
• a linear load connected between said first and second antenna connection terminals, wherein a current flowing through the linear load has a substantially linear, positive relationship with a voltage across the linear load, defining a conductance of the linear load, wherein the conductance of the linear load is adjustable;
• a voltage clamp connected between said first and second antenna connection terminals, having an adjustable clamping voltage;
• a peak detector arranged to detect an amplitude of an incoming near-field communication signal across said antenna connection terminals;
• and
• a control circuit arranged to adjust the conductance of the linear load and the clamping voltage of the voltage clamp based on the amplitude detected by the peak detector, so as to regulate the voltage swing across the antenna connection terminals.