RFID tag and method for manufacturing RFID tag
AssigneeMurata Manufacturing Co., Ltd.
InventorRyohei Omori
Life of this patent
Estimating the term…
Abstract
An RFID tag includes a booster antenna, a feeding loop, an RFID module, and a sheet-like insulating base. The insulating base includes first and second sides that are opposite to each other. The booster antenna is comprised by one metal wire having one end on the first side of the insulating base and the other end on the second side of the insulating base and includes a first curved portion that reverses a direction of the metal wire extending from the one end and a second curved portion that reverses a direction of the metal wire, which is reversed by the first curved portion, to connect to the other end. Moreover, the RFID module is disposed in a region surrounded by the metal wire including the first curved portion and the second curved portion.
Claims20
A method for manufacturing an RFID tag, comprising:
- preparing a sheet-like insulating base having a plurality of regions arranged in a first direction and delineated with each other at a plurality of cutting lines along a second direction that intersects the first direction;
- disposing a single continuous metal wire across the plurality of regions on an upper surface of the insulating base, such that the disposed single continuous metal wire forms a pattern in each of the plurality of regions that includes a first curved portion that reverses a direction of the single continuous metal wire and a second curved portion that reverse a direction of the single metal wire reversed by the first curved portion;
- disposing in each of the plurality of regions a respective RFID module that includes a feeding loop configured to couple to the metal wire via an electromagnetic field, and an RFIC element connected to the feeding loop, wherein each RFID module is disposed in a respective region surrounded by the single continuous metal wire including at least one of the first and second curved portions, such that the single continuous metal wire surrounds at least opposing sides of each RFID module with the RFID module being disposed therebetween and the RFID module not directly connected to the single continuous metal wire;
- and
- cutting the single continuous metal wire and the sheet-like insulating base along the plurality of cutting lines to prepare a plurality of RFID tags corresponding to the plurality of regions divided by the cutting.
An RFID tag comprising:
- a sheet-like insulating base including first and second sides opposite to each other;
- a booster antenna disposed on the insulating base and including a single continuous metal wire bended within a plane, with the single continuous metal wire having a first end on the first side of the insulating base and a second end on the second side of the insulating base, and the single continuous metal wire including a first curved portion that reverses a direction of the single continuous metal wire and a second curved portion that reverse a direction of the single continuous metal wire reversed by the first curved portion;
- and
- an RFID module disposed on the insulating base in a same plane as the booster antenna and in a region surrounded by at least one of the first and second curved portions of the single continuous metal wire, the RFID module including a feeding loop configured to couple to the booster antenna via an electromagnetic field, and an RFIC element connected to the feeding loop
- wherein the single continuous metal wire surrounds at least opposing sides of the RFID module, such that the RFID module is disposed therebetween and does not directly connect to the single continuous metal wire.
Dependencies are inferred from the claim text.