Imaging RFID system at 24 GHz for object localization

  title={Imaging RFID system at 24 GHz for object localization},
  author={Martin Kaleja and Arnold J. Herb and Ralph H. Rasshofer and G. L. Friedsam and Erwin M. Biebl},
  journal={1999 IEEE MTT-S International Microwave Symposium Digest (Cat. No.99CH36282)},
  pages={1497-1500 vol.4}
  • M. KalejaA. Herb E. Biebl
  • Published 13 June 1999
  • Physics
  • 1999 IEEE MTT-S International Microwave Symposium Digest (Cat. No.99CH36282)
A new RFID system for the ISM band at 24 GHz employing quasi-optical beam forming is presented. Active integrated antennas are used as transmitters resulting in exceptionally small size of the ID-tags. Identification codes are transmitted via a spread-spectrum modulated subcarrier that allows for very simple free running microwave oscillators as well as simple but highly selective receiver concepts. A dielectric lens and a 5/spl times/5 rectenna array comprise an imaging receiver that not only… 

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