Encoding module, associated encoding element, connector, printer-encoder and access control system
First Claim
1. An encoding element, comprising:
- a first conductive layer;
a first dielectric substrate disposed adjacent to the first conductive layer;
a second dielectric substrate;
a shield disposed adjacent to the second dielectric substrate; and
a conductive strip disposed between the first dielectric substrate and the second dielectric substrate, wherein;
the conductive strip includes a loop shape;
the first dielectric substrate electrically separates the conductive strip from the first conductive layer;
the conductive strip and the first conductive layer define a transmission line configured to generate magnetic fields concentrated in a near field region of the transmission line when an electrical signal is passed through the conductive strip;
the second dielectric substrate electrically separates the conductive strip from the shield;
the shield includes a split-ring shape corresponding to the loop shape of the conductive strip; and
the split-ring shape of the shield and the loop shape of the conductive strip are concentric with each other.
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0 Petitions
Accused Products
Abstract
An encoding module and related systems and components are provided. The encoding module includes a plurality of encoding elements arranged in an array of columns and rows and one or more switching elements configured to selectively connect the encoding elements to a reader. The connection of the encoding elements may be based on the location of a targeted transponder disposed among multiple adjacent transponders to ensure the selective communication with the targeted transponder only. The module is configured for various types and locations transponders to be used within a system, such as a printer-encoder. Each encoding element may include a loaded conductive strip comprising a loop shape portion and a shield that corresponds to the loop shape portion. In another embodiment, an access control system having an encoding module with the plurality of couplers and an access card having a plurality of transponders corresponding to the couplers is provided.
45 Citations
22 Claims
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1. An encoding element, comprising:
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a first conductive layer; a first dielectric substrate disposed adjacent to the first conductive layer; a second dielectric substrate; a shield disposed adjacent to the second dielectric substrate; and a conductive strip disposed between the first dielectric substrate and the second dielectric substrate, wherein; the conductive strip includes a loop shape; the first dielectric substrate electrically separates the conductive strip from the first conductive layer; the conductive strip and the first conductive layer define a transmission line configured to generate magnetic fields concentrated in a near field region of the transmission line when an electrical signal is passed through the conductive strip; the second dielectric substrate electrically separates the conductive strip from the shield; the shield includes a split-ring shape corresponding to the loop shape of the conductive strip; and the split-ring shape of the shield and the loop shape of the conductive strip are concentric with each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An radio frequency identification (RFID) system, comprising:
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a reader; and one or more encoding elements, the one or more encoding elements including a first encoding element comprising; a first conductive layer; and a conductive strip including a loop shape;
wherein;the conductive strip is electrically isolated from the first conductive layer; the conductive strip and the first conductive layer define a transmission line configured to generate magnetic fields concentrated in a near field region of the transmission line when an electrical signal is passed from the reader through the conductive strip; the first encoding element further includes a shield; and the conductive strip is disposed between and electrically isolated from the first conductive layer and the shield; the shield includes a split-ring shape corresponding to the loop shape of the conductive strip, the split-ring shape defining a central open area of the shield; and the first conductive layer further defines a hole that is concentric with the central open area. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. An encoding element, comprising:
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a first conductive layer; a first dielectric substrate disposed adjacent to the first conductive layer; a second dielectric substrate; a shield disposed adjacent to the second dielectric substrate; and a conductive strip disposed between the first dielectric substrate and the second dielectric substrate, wherein; the conductive strip includes a loop shape; the first dielectric substrate electrically separates the conductive strip from the first conductive layer; the conductive strip and the first conductive layer define a transmission line configured to generate magnetic fields concentrated in a near field region of the transmission line when an electrical signal is passed through the conductive strip; the second dielectric substrate electrically separates the conductive strip from the shield; the shield includes a split-ring shape corresponding to the loop shape of the conductive strip; and the loop shape of the conductive strip is aligned with a centerline of the split-ring shape of the shield. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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Specification