Patent ID: 11889619
Assignee: FREEVOLT TECHNOLOGIES LIMITED
Field: Telecommunications (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 0:
1. A power splitter for a smart card having near field RF communications capability, the power splitter comprising: a substrate for integration into said smart card; a first port for connection to a near field RF communications antenna for receiving an alternating electrical signal; a second port for connection to an auxiliary rectifier; and a third port for connection to a near field RF communicator; wherein the splitter comprises a impedance network, connected between the three ports to divide the alternating electrical signal between the second port and the third port to split the alternating electrical signal, wherein the impedance network comprises a printed coil inductor, and a zone of the substrate surrounding the printed coil inductor is free from any ground plane, wherein the substrate comprises a layer of conductive material comprising a gap in the layer beneath the region of the dielectric occupied by the printed coil inductor, wherein this gap is uninterrupted and surrounds and encompasses the region of the dielectric occupied by the printed coil inductor.