Patent ID: 9317798
Filing Date: 2016-04-19
CPC Classification: G06K,H01Q

Claim Text:
1. An RFID device, comprising: a substrate; a first active portion of a first inverted F antenna extending along a topside of the substrate; a first feed electrically coupled to the first active portion; a second active portion of a second inverted F antenna extending along an underside of the substrate such that the first active portion of the first inverted F antenna and the second active portion of the second inverted F antenna lie along parallel but spaced apart planes, wherein the second active portion of the second inverted F antenna is arranged in an opposite orientation relative to an orientation of the first active portion of the first inverted F antenna, such that the second active portion is rotated about 180 degrees from the orientation of the first active portion relative to a central axis perpendicular to a face of the substrate; a second feed electrically coupled to the second active portion; a ground plane spaced from the active portions; an RFID controller coupled to the feeds; and a battery coupled to the RFID controller, wherein the battery is positioned between the active portions of the inverted F antennas and the ground plane, such that the active portions of the inverted F antennas are on a first side of the battery and the ground plane is on a second side of the battery that is opposite of the first side.