RFID TAG INCLUDING A THREE-DIMENSIONAL ANTENNA
First Claim
Patent Images
1. A radio frequency identification (RFID) tag comprising:
- a three-dimensional (3D) antenna comprising at least a first antenna layer and a second antenna layer, wherein the first antenna layer and the second antenna layer each define two-dimensional (2D) conductive surfaces substantially residing in different planes of the RFID tag, and wherein electrical current flows between the first antenna layer and the second antenna layer if the tag is in the presence of an electromagnetic field; and
a layer of spacer material between the first and second layers of the antenna.
1 Assignment
0 Petitions
Accused Products
Abstract
A radio frequency identification (RFID) tag comprises an antenna folded into a three-dimensional configuration defining at two antenna layers that reside in different planes. Spacer material separates at least two of the antenna layers.
87 Citations
20 Claims
-
1. A radio frequency identification (RFID) tag comprising:
-
a three-dimensional (3D) antenna comprising at least a first antenna layer and a second antenna layer, wherein the first antenna layer and the second antenna layer each define two-dimensional (2D) conductive surfaces substantially residing in different planes of the RFID tag, and wherein electrical current flows between the first antenna layer and the second antenna layer if the tag is in the presence of an electromagnetic field; and a layer of spacer material between the first and second layers of the antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A system comprising:
-
a radio frequency identification (RFID) tag comprising; a contact surface having a contact surface area; an antenna folded into a three-dimensional configuration to define a plurality of antenna portions, wherein an antenna surface area of the antenna is greater than the contact surface area of the contact surface; and at least one layer of electrically nonconductive spacer material separating at least two of the antenna portions; and a reader unit for interrogating the RFID tag to obtain information from the RFID tag. - View Dependent Claims (19)
-
-
20. A method for forming a radio frequency identification (RFID) tag, the method comprising:
-
folding an antenna to define at least two antenna layers, each antenna layer defining a two-dimensional (2D) conductive surface; and separating the at least two antenna layers with a spacer material.
-
Specification