The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 08, 2014
Filed:
May. 21, 2012
Michael Mathews, Olive Branch, MS (US);
Chakravarty Tapas, Kolkata, IN;
Steven Tethrake, Collierville, TN (US);
Robin Turner, Memphis, TN (US);
Kuldeep Tyagi, Ghaziabad, IN;
Michael Mathews, Olive Branch, MS (US);
Chakravarty Tapas, Kolkata, IN;
Steven Tethrake, Collierville, TN (US);
Robin Turner, Memphis, TN (US);
Kuldeep Tyagi, Ghaziabad, IN;
Warsaw Orthopedic, Inc., Warsaw, IN (US);
Abstract
This invention relates to a novel architecture of a passive RFID (Radio-Frequency Identification) tag which is highly miniature in size, capable of metal mounting and suitable for global operation in the entire UHF band (860 MHz to 960 MHz) without necessity of territory specific optimization of the antenna design layout. This invention envisages a novel antenna design that consists of a circular or rectangular microstrip antenna of ultra-small size (−λ/50), which is suitably loaded in shunt by lumped components resistor (R), inductor (L) and capacitor (C). The feed point, feed layout and the loading values are so optimized that a single tag will display optimum performance in all the territories. This invention relates to a method of encapsulating the passive tag with radio transparent materials like Radel® R, as well as a metal backplane so that the encapsulated tag can withstand autoclaving while maintaining the required performance.