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International Journal of Antennas and Propagation
Volume 2013, Article ID 982813, 6 pages
http://dx.doi.org/10.1155/2013/982813
Research Article

Compact and Circular Polarized RFID Antenna for Portable Terminal Applications

School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received 23 June 2013; Accepted 29 July 2013

Academic Editor: Chaowei Wang

Copyright © 2013 Yuan Yao et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A novel compact and circular polarized antenna is proposed which can be easily fabricated and embedded into RFID readers. Circular polarization characteristic of the proposed antenna is achieved by introducing a crossed branch. The modified meandering line structure gives the antenna compactness characteristic. A prototype is fabricated and measured. The results show that this circular polarized antenna with compact dimension can cover the Chinese RFID operating band from 920 MHz to 925 MHz, which make's the antenna suitable for handheld terminal application of RFID readers.