Patents Assigned to Valtion Teknillinen Tutkimiskeskus
  • Measurement system, measurement method and new use of antenna
    Patent number: 8525647
    Abstract: The invention relates to a measuring system for detecting radio-frequency tags, a measuring method, and a new use for a leaky waveguide. The measuring system comprises a reading device and an antenna, which is connected to reading device for connecting to the tags. According to the invention, the antenna is a microstrip-type leaky waveguide having a length which is several times the operating wavelength of the tags. The invention permits reliable and precise RFID detection, for example, for a results service for sports events.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: September 3, 2013
    Assignee: Valtion Teknillinen Tutkimiskeskus
    Inventors: Timo Varpula, Kaj Nummila, Kaarle Jaakkola, Pentti Lajunen