Summary
International Symposium on Antennas and Propagation
2011
Session Number:FrP2
Session:
Number:FrP2-29
Broadband U-Shaped RFID Tag Antenna with Quasi-Isotropic Radiation Characteristics
Sangwoon Lee, Hakjoo Jung, Hosung Choo, Ikmo Park,
pp.-
Publication Date:2011/10/25
Online ISSN:2188-5079
Summary:
This paper presents a broadband U-shaped RFID tag antenna with quasi-isotropic radiation characteristics in the UHF band. A rectangular-shaped feed located inside the dipole is connected to the bottom of the dipole for broadband conjugate impedance matching with a commercial tag chip. For a VSWR ? 2, the tag antenna had a measured fractional bandwidth of 10.58% over the frequency range of 859.5?955.5 MHz. The maximum gain deviation of the antenna in all directions was less than 3.77 dB across that frequency range.