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US 2013/0153669 A1Published application
Spring oriented rfid board
AssigneesMichelin Recherche et Technique S.A., Compagnie Generale Des Etablissements Michelin
InventorJay Clifford Sinnett
Life of this patent
Estimating the term…
Abstract
Disclosed is an apparatus for providing an RFID device for integration into a tire. A printed circuit board (PCB) is provided with a pair of asymmetric arms forming notches in opposed ends of the PCB. Helically wound antenna elements are positioned in the notches such that the ends of the asymmetric arms are positioned adjacent the nearest approach of the individual helically wound antenna elements.
Claims11
An RFID device for integration into a tire, comprising:
- a printed circuit board (PCB) having top and bottom surfaces delineated by opposed end portions and opposed side portions;
- a plurality of conductive traces on the top surface of said PCB;
- a pair of asymmetric arms extending from one end of said PCB forming a notch;
- a plated through via piercing the PCB from the top surface to the bottom surface;
- a conductive trace element surrounding said via at the top surface of said PCB, the trace element electrically coupled to the plurality of conductive traces;
- and,
- a helically wound antenna element having an end portion positioned within said notch and within a plane defined by the top surface of the PCB,
- wherein said helically wound antenna element is wound with a predetermined pitch, wherein said pair of asymmetric arms differ in length by one half the predetermined pitch, and wherein an end of each of the arms of said pair of asymmetric arms extends so that it ends adjacent to the nearest approach of said helically wound antenna element.
5 more elements
The device of claim I, wherein the length of the asymmetric arms differs by about 0.3675 mm to 0.4015 mm.
Dependencies are inferred from the claim text.