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:
Jul. 12, 2016
Filed:
Jul. 08, 2014
Wernher Von Braun Centro DE Pesquisas Avancadas, Campinas, BR;
Osmar Vieira Machado, Campinas, BR;
Ademir L. Xavier, Campinas, BR;
Alexander Sieh, Campinas, BR;
Daniel Vidal, Campinas, BR;
Henrique Uemura Okada, Marilia, BR;
Walter Luis Tercariol, Campinas, BR;
Wernher Von Braun Centro De Pesquisas Avancadas, Campinas, Sao Paulo, BR;
Abstract
A RFID tag () includes an antenna () that includes a first dipole (), a first feeder portion (), a second dipole () and a second feeder portion (). The first feeder portion is coupled to the first dipole at two locations a feeder length distance apart. The second feeder portion is coupled to the second dipole at two locations the feeder length distance apart. The feeder portions are also coupled to an antenna terminal (). Impedance at the antenna terminal is determined, at least in part, by the feeder length distance. Each of two end portions of the first dipole distal from the first feeder portion is connected to a respective corresponding end portion of the second dipole distal from the second feeder portion, the first and second dipoles thereby forming a rectangle. The antenna is symmetrical about both a major and a minor axis of the rectangle.