Apparatus

A power harvesting apparatus comprising:

• an inductive coupler for coupling inductively with a radio frequency, RF, H-field to provide an alternating RF voltage;
• a near field, RF, communicator connected to the inductive coupler for performing near field RF communication;
• an auxiliary circuit arranged to communicate data with the near field RF communicator;
• wherein the auxiliary circuit is connected to the inductive coupler by a buck rectifier for obtaining DC electrical energy from the alternating RF voltage.

A power harvesting method comprising:

• coupling inductively with a radio frequency, RF, H-field using an inductive coupler to provide an alternating RF voltage;
• performing near field RF communication using a near field, RF, communicator connected to the inductive coupler;
• obtaining DC electrical energy from the alternating RF voltage using a buck rectifier to power an auxiliary circuit connected to the inductive coupler by a rectifier;
• and
• communicating data between the auxiliary circuit and the near field RF communicator.