Abstract

This paper describes the development of four different ultra-high frequency (UHF) radio frequency identification (RFID) tag antenna using polycarbonate material or transparent paper as the substrate and aluminum tape as the radiating element. The main advantage of the method is that the materials are easy to obtain where it can be found in any hardware stores or in any general online shop. Plus, the antennas are designed in such a way that a meander line is traced along the shape of a bowtie antenna so that the antenna would operate at UHF band. The results of all four of the tag antenna designs are discussed and compared using graph obtained from Computer Simulation Technology (CST) simulation results and measurement results obtained from a portable Vector Network Analyzer (VNA) for the reflection coefficient, S 11 , and measurement results taken from VNA in chamber room for the radiation pattern. Finally, the results show that the measured results are in agreement with the simulated result and that the UHF RFID tag antennas are able to operate at UHF RFID band.

Highlights

  • The history goes way back to the early of 20th century where radar were first introduced as to be used in the military

  • The first active Identify Friend or Foe (IFF) system were developed where every British plane was equipped with a transmitter so when they are within the range of the radar stations in the ground, the transmitter would send a signal back to identify themselves as a friendly craft

  • radio frequency identification (RFID) are applied in several band of frequencies and different types of tags are developed for various communication methods and different power sources

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Summary

Introduction

The history goes way back to the early of 20th century where radar were first introduced as to be used in the military. The concept of RFID is similar to that of this system. It was still considered a secret technology used by the military to restrict the access to sensitive areas such as nuclear plants or buildings. RFID cannot be defined as a single technology. RFID are applied in several band of frequencies and different types of tags are developed for various communication methods and different power sources. Technological advancements lead to the development of passive tags [1,2,3]

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