Spatially selective UHF near field microstrip coupler device and RFID systems using device
First Claim
1. An apparatus comprising:
- a media conveyance configured to transport a series of discrete media through a transponder operating region, at least some of said media including a transponder; and
a near field coupler configured to generate a near field effect to couple with the transponder for data transfer;
the near field coupler having a plurality of lines electrically interconnected in parallel, and a spaced away ground plane.
6 Assignments
0 Petitions
Accused Products
Abstract
A system having a UHF RFID transceiver is adapted to communicate exclusively with a single electro-magnetically coupled transponder located in a predetermined confined transponder operating region. The system includes a near field coupling device comprising a plurality of lines connected in parallel with an unmatched load. The near field coupling device may be formed, for example on a printed circuit board with a plurality of electrically interconnected traces and a ground plane. The system establishes, at predetermined transceiver power levels, a mutual electro-magnetic coupling which is selective exclusively for a single transponder located in a defined transponder operating region. Also included are methods for selective communication with the transponder in an apparatus such as a printer-encoder.
51 Citations
20 Claims
-
1. An apparatus comprising:
-
a media conveyance configured to transport a series of discrete media through a transponder operating region, at least some of said media including a transponder; and a near field coupler configured to generate a near field effect to couple with the transponder for data transfer; the near field coupler having a plurality of lines electrically interconnected in parallel, and a spaced away ground plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method comprising:
-
transporting, via a media conveyance, a series of discrete media through a transponder operating region, at least some of said media including a transponder; and generating a near field effect via a near field coupler to couple with the transponder for data transfer, wherein the near field coupler includes a plurality of lines electrically interconnected in parallel, and a spaced away ground plane. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification