RFID devices using metamaterial antennas
First Claim
1. An apparatus comprising:
- a microprocessor;
a memory communicatively coupled to said microprocessor; and
a radio frequency identification (RFID) reader;
wherein said RFID reader comprises an antenna;
wherein said antenna comprises;
one or more spatially separated conductive cell patches mounted on a dielectric substrate,a feed pad mounted on said dielectric substrate,one or more conductive feed lines connected to said feed pad so that the feed pad provides power to at least one of the one or more conductive feed lines, wherein at least one of the one or more conductive feed lines comprises a microstrip line that is disposed between the one or more spatially separated conductive cell patches, andone or more ground planes mounted on said dielectric substrate;
wherein said one or more conductive feed lines are spatially separated from said one or more conductive cell patches; and
wherein each of said one or more conductive cell patches are connected by one or more vias to one or more conductive via lines.
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Accused Products
Abstract
An EIR terminal can comprise a microprocessor, a memory communicatively coupled to the microprocessor, and a radio frequency identifier (RFID) reading device including an antenna having a composite right- and left-handed (CRLH) structure. The antenna can comprise one or more spatially separated conductive cell patches mounted on a dielectric substrate, a feed pad mounted on the dielectric substrate, one or more conductive feed lines connected to the feed pad, and one or more ground planes mounted on the dielectric substrate. One or more conductive feed lines can be spatially separated from one or more conductive cell patches. One or more conductive cell patches can be connected by one or more vias to one or more conductive via lines.
166 Citations
14 Claims
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1. An apparatus comprising:
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a microprocessor; a memory communicatively coupled to said microprocessor; and a radio frequency identification (RFID) reader; wherein said RFID reader comprises an antenna; wherein said antenna comprises; one or more spatially separated conductive cell patches mounted on a dielectric substrate, a feed pad mounted on said dielectric substrate, one or more conductive feed lines connected to said feed pad so that the feed pad provides power to at least one of the one or more conductive feed lines, wherein at least one of the one or more conductive feed lines comprises a microstrip line that is disposed between the one or more spatially separated conductive cell patches, and one or more ground planes mounted on said dielectric substrate; wherein said one or more conductive feed lines are spatially separated from said one or more conductive cell patches; and wherein each of said one or more conductive cell patches are connected by one or more vias to one or more conductive via lines. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification