HKUST Library Institutional Repository Banner

HKUST Institutional Repository >
Mechanical Engineering >
MECH Conference Papers >

Please use this identifier to cite or link to this item: http://hdl.handle.net/1783.1/6158
Title: Passive UHF RFID with ferrite electromagnetic band gap (EBG) material for metal objects tracking
Authors: Gao, Bo
Yuen, Matthew Ming-Fai
Keywords: UHF antennas
UHF RFID
Ferrite electromagnetic band gap
Issue Date: 2008
Citation: Proceedings 58th Electronic Components and Technology Conference (ECTC 2008), Lake Buena Vista, FL, U.S.A., 27-30 May 2008, p. 1990-1994
Abstract: Passive UHF (Ultra High Frequency) RFID (Radio Frequency Identification) is a promising technology for products tracking in logistics or routing packages in supply chain. However, passive UHF RFID tag suffers a lot when it is placed on conductive plane or water surface. Many designs like microstrip antenna and ferrite antenna have been used to solve this metal-water problem. But their use is limited by narrow bandwidth and low antenna gain. The Electromagnetic band gap (EBG) material which exhibits a unique forbidden band gap at certain frequency offers a potential solution to solve the problem of backside objects effects. Previous research paper indicated that the dipole RFID antenna above three-layer mushroom like EBG material exhibited a good antenna gain and long read range. However, the complicated structure and high material cost greatly limit the application of tag. In this paper, we developed a new type of EBG material which uses ferrite film to reduce size and lower forbidden frequency. A commercial ferrite film which has a high permeability is applied to form two-layer mushroom like EBG material for UHF RFID. This two-layer mushroom like EBG material is a two-layer structure with a ground plane. The design of EBG material for UHF RFID which operates at 915MHz was discussed in this paper. An EBG tag on metal with a gain of 7 dBi was achieved in simulation. The simulation results showed that the RFID tag still could be read on EBG substrate with a good gain (~7dBi).
Rights: © 2008 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.
URI: http://hdl.handle.net/1783.1/6158
Appears in Collections:MECH Conference Papers

Files in This Item:

File Description SizeFormat
PassiveUHF.pdf454KbAdobe PDFView/Open

All items in this Repository are protected by copyright, with all rights reserved.