Summary
International Symposium on Antennas and Propagation
2006
Session Number:3C1a
Session:
Number:3C1a-4.
Small Circular Loop Antenna for RFID Tag
Hong-Kyun Ryu, Jong-Myung Woo,
pp.1-4
Publication Date:2006/11/2
Online ISSN:2188-5079
Summary:
RFID Tag antennas are designed to miniaturize a circular loop antenna(CLA) by using short stubs inserted into the inner part of the loop at UHF band. This RFID tag antenna, in the case of one wavelength and a half-wavelength, respectively, is reduced up to 83% and 92.1%(except ground) of its size, compared with the general type CLA. Also the return loss, -10dB bandwidth, and gain of one wavelength and a half-wavelength are -11.9dB, 12MHz(1.3%), and - 1.18dBd and -16.5dB, 48MHz(5%), and -0.58dBd respectively. The radiation pattern shows omni-directional pattern in z-y plane(x-axis pol.).