High gain metamaterial loaded slot antenna
AssigneeAvery Dennison Retail Information Services LLC
InventorKunalen THIRAPPA
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Abstract
The present subject matter provides an RFID device that is configured to provide improved gain and directivity of an antenna. The RFID device includes an antenna, a metamaterial (MTM) array, and a substrate. The substrate includes a first surface and a second surface, and the antenna includes a bottom surface and a top surface. The bottom surface of the antenna and the MTM array are formed on the first surface of the substrate. The antenna and the MTM array are separated by a gap. The antenna is formed by a first electrically conductive material defining an area enclosed by a first perimeter. The antenna includes nested slots. The MTM array is formed by a second electrically conductive material defining an area enclosed by a second perimeter.
Claims20
An RFID device comprising:
- an antenna comprising a bottom surface and a top surface;
- a metamaterial (MTM) array;
- and
- a substrate of flexible material having a first surface and a second surface,
- wherein the bottom surface of the antenna and the MTM array are formed on the first surface of the substrate, and
- wherein the antenna and the MTM array are separated by a gap.
Dependencies are inferred from the claim text.