An 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 connected to the inductive coupler by a rectifier for obtaining DC electrical energy from the alternating RF voltage wherein the auxiliary circuit is arranged to communicate data with the near field RF communicator ; wherein the rectifier comprises: a first rectifier input and a second rectifier input for receiving the alternating RF voltage, a first rectifier output and a second rectifier output for providing the DC electrical energy to the auxiliary circuit ; the apparatus being characterized in that the rectifier further comprises: a rectifying element connected between the first rectifier input and the second rectifier input ; wherein the first rectifier output is coupled to an output of the rectifying element and to the first rectifier input by a first inductor ; and wherein the rectifying element is connected in shunt to provide a one-directional current flow path between the inputs of the rectifier . 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 connected to the inductive coupler by a rectifier for obtaining DC electrical energy from the alternating RF voltage wherein the auxiliary circuit is arranged to communicate data with the near field RF communicator ; wherein the rectifier comprises: a first rectifier input and a second rectifier input for receiving the alternating RF voltage, a first rectifier output and a second rectifier output for providing the DC electrical energy to the auxiliary circuit ; the apparatus being characterized in that the rectifier further comprises: a rectifying element connected between the first rectifier input and the second rectifier input ; wherein the first rectifier output is coupled to an output of the rectifying element and to the first rectifier input by a first inductor ; and wherein the rectifying element is connected in shunt to provide a one-directional current flow path between the inputs of the rectifier . a first rectifier input and a second rectifier input for receiving the alternating RF voltage, a first rectifier output and a second rectifier output for providing the DC electrical energy to the auxiliary circuit ; the apparatus being characterized in that the rectifier further comprises: a rectifying element connected between the first rectifier input and the second rectifier input ; wherein the first rectifier output is coupled to an output of the rectifying element and to the first rectifier input by a first inductor ; and wherein the rectifying element is connected in shunt to provide a one-directional current flow path between the inputs of the rectifier . a rectifying element connected between the first rectifier input and the second rectifier input ; wherein the first rectifier output is coupled to an output of the rectifying element and to the first rectifier input by a first inductor ; and wherein the rectifying element is connected in shunt to provide a one-directional current flow path between the inputs of the rectifier . <EOS>