A mounting system for a near field RF communications chip, the system comprising: a substrate for carrying electronic components, and for providing electrical interconnections therebetween; a chip coupling carried by the substrate for connecting a near field RF communications chip to the mounting system; an auxiliary power provider, separate from said near field RF communications chip, and adapted for providing electrical power output based on a received alternating electrical signal; and, an antenna coupling for connecting a near field RF communications antenna to said mounting system; characterized in that it further comprises: a splitter, for splitting alternating electrical signals, the splitter comprising: a first port connected to the antenna coupling and having a first input impedance; a second port connected to the first port and configured to provide a first part of the alternating electrical signal to the auxiliary power provider; and a third port connected to the first port and configured to provide a second part of the alternating electrical signal to the chip coupling; wherein the splitter is configured to maintain the first input impedance so that: the output impedance of the second port is maintained in the event of fluctuations in the output impedance of the third port; and the output impedance of the third port is maintained in the event of fluctuations in the output impedance of the second port. a substrate for carrying electronic components, and for providing electrical interconnections therebetween; a chip coupling carried by the substrate for connecting a near field RF communications chip to the mounting system; an auxiliary power provider, separate from said near field RF communications chip, and adapted for providing electrical power output based on a received alternating electrical signal; and, an antenna coupling for connecting a near field RF communications antenna to said mounting system; characterized in that it further comprises: a splitter, for splitting alternating electrical signals, the splitter comprising: a first port connected to the antenna coupling and having a first input impedance; a second port connected to the first port and configured to provide a first part of the alternating electrical signal to the auxiliary power provider; and a third port connected to the first port and configured to provide a second part of the alternating electrical signal to the chip coupling; wherein the splitter is configured to maintain the first input impedance so that: the output impedance of the second port is maintained in the event of fluctuations in the output impedance of the third port; and the output impedance of the third port is maintained in the event of fluctuations in the output impedance of the second port. a splitter, for splitting alternating electrical signals, the splitter comprising: a first port connected to the antenna coupling and having a first input impedance; a second port connected to the first port and configured to provide a first part of the alternating electrical signal to the auxiliary power provider; and a third port connected to the first port and configured to provide a second part of the alternating electrical signal to the chip coupling; a first port connected to the antenna coupling and having a first input impedance; a second port connected to the first port and configured to provide a first part of the alternating electrical signal to the auxiliary power provider; and a third port connected to the first port and configured to provide a second part of the alternating electrical signal to the chip coupling; wherein the splitter is configured to maintain the first input impedance so that: the output impedance of the second port is maintained in the event of fluctuations in the output impedance of the third port; and the output impedance of the third port is maintained in the event of fluctuations in the output impedance of the second port. the output impedance of the second port is maintained in the event of fluctuations in the output impedance of the third port; and the output impedance of the third port is maintained in the event of fluctuations in the output impedance of the second port.