RFID smart shelf matching network and 3-D antenna design

• Main Author: Wang, Wei Xiao.
• Other Authors: Soong Boon Hee
• Format: Final Year Project
• Language: English
• Published: 2010
• Subjects: DRNTU::Engineering::Electrical and electronic engineering::Antennas, wave guides, microwaves, radar, radio
• Online Access: http://hdl.handle.net/10356/40623
• Institution: Nanyang Technological University

For an inventory management, in the context of library, a RFID smart shelf system is extremely useful for tracking of materials such as books, magazines, compact disks. To further enhance the cost efficiency and tracking accuracy of the smart shelf system, the project demonstrates the design and development of a matching network, multi close range tags antenna and bin antenna. There are two main parts to this project. The first part is to design a low cost matching network with PIN diode to maximise the power transfer and minimise the reflections from the load. The calculated component values and circuit design have been verified by simulations on ADS. The implementation on circuit board was demonstrated. The second part of this project concentrated on the use of magnetic field coupling to design three-dimensional antennas. The antenna used in this application is operating in the frequency of 13.56 MHz. Two three-dimensional antennas have been built. One of them is multi close range tags antenna for detecting thin materials on the shelf. Another one is bin antenna which would be used as a book-drop for the library to update the returned books information. The proposed models were confirmed by measurements and simulations done on Agilent EMDS.