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

Volume

6

fYear

2007

fDate

6/29/1905 12:00:00 AM

Firstpage

518

Lastpage

520

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;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2007.909962

Filename

4357959