Measurement System, Measurement Method and New Use of Antenna
First Claim
1. Measuring system for detecting radio-frequency tags, which comprises a reading device and an antenna, which is connected to reading device in order to produce a radio-frequency exciter signal and in order to receive from the radio-frequency tag the return signal caused by the exciter signal, characterized in that the antenna is a microstrip-type leaky waveguide.
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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.
97 Citations
39 Claims
- 1. Measuring system for detecting radio-frequency tags, which comprises a reading device and an antenna, which is connected to reading device in order to produce a radio-frequency exciter signal and in order to receive from the radio-frequency tag the return signal caused by the exciter signal, characterized in that the antenna is a microstrip-type leaky waveguide.
- 14. Method for detecting a radio-frequency tag, in which method the radio-frequency tag is brought into the vicinity of an antenna connected to a reading device in order to excite it and to detect the return signal obtained from the tag, characterized in that a microstrip-type leaky waveguide is used as the antenna.
- 16. Use of a microstrip-type leaky waveguide as a transmission and reception antenna in a radio-frequency identification system.
- 19. Measuring system for detecting radio-frequency tags operating at a predefined wavelength, the system comprising a reading device and an antenna, which is connected to the reading device for connecting to the tags, wherein the antenna is a microstrip-type leaky waveguide having a length, which is several times said wavelength.
- 33. Method for detecting a radio-frequency tag operating at a predefined wavelength, in which method the radio-frequency tag is brought into the vicinity of an antenna connected to a reading device for connecting to the tag with the antenna wherein a microstrip-type leaky waveguide having a length several times said wavelength is used as the antenna.
Specification