US 12,380,290 B2 · Fabric-based RFID tags and methods of manufacture

Abstract

Disclosed ae fabric-based radio frequency identification (RFID) tags and methods of manufacture. The method is characterized by forming a knitted fabric from at least one primary non-conductive fiber and a secondary conductive fiber, wherein the secondary conductive fiber is distributed within the knitted fabric to form a plurality of dipole antennas; integrating an RFID inlay with each of the plurality of dipole antennas to form pairs of inlays and antennas; and, cutting the knitted fabric to separate each of the pairs of inlays and antennas into individual RFID tags. The RFID inlay comprises an RFID integrated circuit (IC) and a loop antenna on a substrate; the RFID inlay is positioned on the fabric-based antenna such that the loop antenna is inductively coupled to a dipole antenna.

Claims28

Dependent claims

A method of manufacturing fabric-based radio frequency identification (RFID) tags, comprising the steps of:

forming a knitted fabric from a primary non-conductive fiber, a secondary conductive fiber and a tertiary fiber as a ribbon, said secondary conductive fiber being distributed within said knitted fabric to form a plurality of dipole antennas, said tertiary fiber defining registration marks between an upper registration line and a lower registration line along said ribbon;
integrating an RFID inlay with each of said plurality of dipole antennas at said registration marks to form pairs of RFID inlays and dipole antennas distributed at regular intervals along said ribbon;
and
cutting said knitted fabric to separate each of said pairs of RFID inlays and antennas into individual RFID tags.

1 more element

Dependencies are inferred from the claim text.

Fabric-based RFID tags and methods of manufacture

Life of this patent

Fabric-based RFID tags and methods of manufacture

Life of this patent

Abstract

Claims28