Title :
Radar Cross-Section Analysis of Backscattering RFID Tags
Author :
Yen, Chih-Chuan ; Gutierrez, Alfonso E. ; Veeramani, Dharmaraj ; Van der Weide, Daniel
Author_Institution :
Univ. of Wisconsin, Madison
fDate :
6/29/1905 12:00:00 AM
Abstract :
In this letter, we present a graphical method based on Green´s analysis of scattering antennas to optimize the load impedances for achieving maximum modulated radar cross-section (RCS) of backscattering radio-frequency identification (RFID) tags. A planar tag antenna specifically designed for working in the ultra-high-frequency band is used to experimentally validate the method. The measured RCS of the loaded tag antenna shows acceptable agreement with the theory and simulated results. This method is especially valuable to the design of semipassive RFID tags when the communication range is solely determined by the backscattering modulation efficiency of tags.
Keywords :
electromagnetic wave scattering; planar antennas; radar cross-sections; radiofrequency identification; Green´s analysis; backscattering RFID tags; backscattering modulation; backscattering radio-frequency identification tags; planar tag antenna; radar cross-section analysis; scattering antennas; semipassive RFID tags; ultra-high-frequency band; Backscatter; Impedance; Loaded antennas; Optimization methods; RFID tags; Radar antennas; Radar cross section; Radar scattering; Radio frequency; Radiofrequency identification; Loaded antennas; radio-frequency identification (RFID); scattering;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2007.898552
