Spring oriented RFID board

摘要

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.

主权项

1. An RFD 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 both of said pair of asymmetric arms extends so that each of said pair of asymmetric arms ends aligned with the nearest approach of said helically wound antenna element.