Coiled RFID tag
First Claim
1. A coiled RFID tag comprising:
- a substantially cylindrical substrate core having a length and width, with the length longer than the width;
an RFID transponder circuit including a tag processor in a miniature small outline package (MSOP) located on a surface of the length of the substrate core and one or more antenna portions directly connected to the MSOP, the antenna portions circumscribing the length of the substrate core; and
a ground plane formed of a sheet of conductive material that covers a portion of the surface along the length of the substrate core.
2 Assignments
0 Petitions
Accused Products
Abstract
A coiled RFID tag that includes an RFID transponder circuit that is formed over a generally cylindrically-shaped substrate core so that portions of the antenna of the transponder circuit circumscribe the substrate core. With this configuration, the tag may be applied to objects without regard to antenna orientation. The transponder circuit and substrate core are encased in a protective material that will prevent ingress of moisture and dust, insulate from heat and cold but will allow radio frequency waves to pass without significant attenuation. The tag may be attached various items by an overmolding process in the formation of a grip of other portions. Alternatively, the tag may be attached to objects by forming it into a flexible sleeve-like portion that is pulled over objects and maintained in position by the resilient properties of the sleeve.
115 Citations
16 Claims
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1. A coiled RFID tag comprising:
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a substantially cylindrical substrate core having a length and width, with the length longer than the width; an RFID transponder circuit including a tag processor in a miniature small outline package (MSOP) located on a surface of the length of the substrate core and one or more antenna portions directly connected to the MSOP, the antenna portions circumscribing the length of the substrate core; and a ground plane formed of a sheet of conductive material that covers a portion of the surface along the length of the substrate core. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An RFID tag comprising:
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an RFID transponder circuit including a tag processor in a miniature small outline package (MSOP) located on a surface of the length of the substrate core and one or more antenna portions directly connected to the MSOP, the antenna portions circumscribing the length of a non-conductive cylindrical substrate core having a length and width, with the length longer than the width; and a ground plane formed of a sheet of conductive material that covers approximately 180°
of the substrate core surface along the entire length of the substrate. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification