Summary
International Symposium on Antennas and Propagation
2009
Session Number:3B2
Session:
Number:3B2-5
Design of active and passive license plate tag antenna for vehicle RFID system
Dea-Hwan, Kyeong-Silk Min,
pp.863-866
Publication Date:2009/10/21
Online ISSN:2188-5079
Summary:
The radio frequency identification (RFID) system is growing with many promising features in wireless communication technology application, especially in the UHF band for its suitability of communication link between a reader and many tags [1]. This technology is useful for the near field communication zone. An auto vehicle RFID system is a good candidate for various application such as transit fare, parking-lot fees, pay on tollgate fees and so on [2~3]. Most of the car entrance and exit control systems can meet easily at the gateway barriers in resident apartments, tall building and so on. It took a long time to pass a gateway in conventional system because of manual control by person. Recently, it can reduce the gateway pass time because of automatic control by RFID system replace with person. The important consideration items in tag antenna design are identification ratio, readable range and change of the resonant frequency according to the attached materials. In order to improve the identification accuracy, dual resonant frequency diversity design is conducte d. It can definitely reduce the error of identification ratio comparison with one tag antenna system relatively. Active and passive antennas are designed dipole configuration with symmetrical structure to improve the bandwidth characteristics and the increase of readable range in this paper.