Patent ID: 9652646
Date: 2017-05-16
CPC Classifications: G01C,G01S,G06K,G06Q,G07G,H04W

Claim:
1. A radio frequency identification (RFID) system, comprising: an enclosure comprising an at least partly closed structure defining a boundary between an interior region, interior to the structure, and an exterior of the structure, the structure having an inner surface facing the interior region and an outer surface facing the exterior; and at least one feed configured for (1) generating an electromagnetic field in the interior region in response to a first signal received from an RFID reader via at least one radio frequency (RF) transmission line, and (2) receiving, from at least one RFID sensor located in the interior region, a second signal generated in response to the electromagnetic field, wherein at least a part of the outer surface is conductive or at least a portion of the inner surface is conductive, and wherein at least a portion of the structure is formed of a metamaterial.