Patent 7986240 was granted and assigned to Broadcom (company) on July, 2011 by the United States Patent and Trademark Office.
A radio frequency identification (RFID) interface includes first coil, a plurality of coils, and a control module. The first coil is associated with an RFID tag and the plurality of coils is associated with an RFID reader. Each of the plurality of coils has a different orientation with respect to at least one axis of a multi-dimensional axis system. The control module is coupled to enable at least one of the plurality of coils based on electro-magnetic coupling between the first coil and the least one of the plurality of coils.