DECOUPLED CONTACTLESS BI-DIRECTIONAL SYSTEMS AND METHODS

摘要

A contactless bi-directional device including first and second generally mutually electromagnetically decoupled contactless loop antennas which are arranged in at least partially mutually overlapping orientation, first and second contactless communication chips, each of the first and second communications chips being connected to a corresponding one of the generally mutually electromagnetically decoupled contactless loop antennas, thereby providing bi-directional communication.

主权项

1. A contactless communication device comprising:
first and second contactless communication chips; first and second generally mutually electromagnetically decoupled contactless loop antennas each connected to a corresponding one of the first and second contactless communication chips, wherein the first and second contactless loop antennas have dimensions generally corresponding to dimensions of respective ones of first and second electromagnetic field generating coils of a contactless reading device, wherein upon the contactless communication device being placed in an electromagnetic field generated by the first electromagnetic field generating coil, the contactless communication device communicates only information stored on the first contactless communication chip, and upon the contactless communication device being placed in an electromagnetic field generated by the second electromagnetic field generating coil, the contactless communication device communicates only information stored on the second contactless communication chip.