Patent ID: 8791874

Claim:
A near field coupler system comprising: a transceiver; and a near field coupler in electrical communication with the transceiver, the near field coupler configured to transmit wireless signals to a targeted transponder, the near field coupler comprising: a dielectric substrate having a first surface and a second surface; a ground plane adjacent to the second surface of the dielectric substrate; radiating elements disposed on the first surface of the dielectric substrate, wherein: the radiating elements are coupled to the ground plane through one or more terminating resistors; a first radiating element of the radiating elements defines a first impedance; a second radiating element of the radiating elements defines a second impedance; the first impedance, in isolation, is different from the second impedance, in isolation; and at least one switching element coupled to each of the radiating elements, wherein the at least one switching element is: configured to be in electrical communication with the transceiver; and configured to selectively activate one or more radiating elements among the radiating elements to provide selective wireless communications between the transceiver and the one or more of the radiating elements to communicate with the targeted transponder having an unknown orientation relative to the radiating elements.