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:
May. 20, 2008
Filed:
Mar. 27, 2006
Paul F. Dixon, Wakefield, MA (US);
Michael P. Carpenter, Acton, MA (US);
Mary M. Osward, Holbrook, MA (US);
David A. Gibbs, Waban, MA (US);
Paul F. Dixon, Wakefield, MA (US);
Michael P. Carpenter, Acton, MA (US);
Mary M. Osward, Holbrook, MA (US);
David A. Gibbs, Waban, MA (US);
Emerson & Cuming Microwave Products, Inc., Randolph, MA (US);
Abstract
The present invention provides a system and method for optimizing the performance of 13.56 MHz frequency RFID tags in conjunction with metal substrates. Briefly, a thickness exists for each type of RFID isolator material at which the performance of a 13.56 MHz RFID tag is optimal when used with metal. Varying from this optimal value, in either the positive or negative direction adversely affects read distance. A method of determining this optimal thickness is disclosed, as well as an RFID tag or a substrate being used in conjunction with a material of this thickness.