Title :
Petaloid antenna for passive UWB-RFID tags
Author :
Hu, S. ; Law, C.L. ; Dou, W.
Author_Institution :
Southeast Univ., Nanjing
Abstract :
An ultra-wideband (UWB) antenna designed with a petal-shaped structure is presented. Its measured impedance bandwidth of 10 dB return loss is from 6.6 to 17.5 GHz whereas the size is just 18times16 mm. The radar cross-section and scattered waveforms of the proposed petaloid antenna are theoretically studied using the finite-difference time-domain (FDTD) method. Its backscattering of antenna mode is comparable to that of structural mode, and the scattering pattern is almost omnidirectional. This antenna is suitable for passive ultra-wideband radio-frequency identification (UWB-RFID) tag applications.
Keywords :
antenna radiation patterns; backscatter; finite difference time-domain analysis; passive radar; radar antennas; radar cross-sections; radiofrequency identification; ultra wideband antennas; antenna backscattering pattern; finite-difference time-domain method; passive UWB-RFID tag; passive ultra-wideband radio-frequency identification tag application; petal-shaped structure; petaloid antenna; radar cross-section; ultra-wideband antenna design; waveform scattering;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20072183
