Patents by Inventor Alexander SIEH

Alexander SIEH has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • RFID tag and RFID tag antenna
    Patent number: 9390367
    Abstract: A RFID tag (500) includes an antenna (100) that includes a first dipole (110), a first feeder portion (130), a second dipole (120) and a second feeder portion (140). 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 (150). 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.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: July 12, 2016
    Assignee: Wernher Von Braun Centro De Pesquisas Avancadas
    Inventors: Osmar Vieira Machado, Ademir L. Xavier, Alexander Sieh, Daniel Vidal, Henrique Uemura Okada, Walter Luis Tercariol
  • RFID TAG AND RFID TAG ANTENNA
    Publication number: 20160012329
    Abstract: A RFID tag (500) includes an antenna (100) that includes a first dipole (110), a first feeder portion (130), a second dipole (120) and a second feeder portion (140). 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 (150). 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.
    Type: Application
    Filed: July 8, 2014
    Publication date: January 14, 2016
    Inventors: Osmar Vieira MACHADO, Ademir L. XAVIER, Alexander SIEH, Daniel VIDAL, Henrique Uemura OKADA, Walter Luis TERCARIOL