Title :
Inductively Coupled Compact RFID Tag Antenna at 910 MHz With Near-Isotropic Radar Cross-Section (RCS) Patterns
Author :
Ahn, Juno ; Jang, Hyungmin ; Moon, Hyosang ; Lee, Jong-Wook ; Lee, Bomson
Author_Institution :
Kyung Hee Univ., Seoul
fDate :
6/29/1905 12:00:00 AM
Abstract :
This letter presents a compact (0.12 x 0.14lambda) RFID tag antenna which has near-isotropic radar cross-section (RCS) patterns and easy conjugate impedance matching property by virtue of an inductively coupled feeding. Its measured maximum and minimum RCS´ are -17.3 dBm2 and -20.4 dBm2, respectively, with a difference of only 3.1 dB in all incident angles. The measured RCS´ have been found to be in good agreement with simulation.
Keywords :
UHF antennas; antenna radiation patterns; impedance matching; radar antennas; radar cross-sections; radiofrequency identification; RFID tag antenna; conjugate impedance matching property; frequency 910 MHz; inductively coupled feeding; near-isotropic radar cross-section pattern; radiofrequency identification; Antenna feeds; Antenna measurements; Antenna radiation patterns; Dipole antennas; Impedance; Positron emission tomography; RFID tags; Radar antennas; Radar cross section; Radiofrequency identification; Isotropic radiation patterns; RFID; Tag antenna; UHF band; isotropic radiation patterns; radar cross section (RCS); radar cross-section (RCS); tag antenna;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2007.909962
