Design of a Miniaturized UHF RFID Tag Antenna

Abstract

This project researched and developed a miniaturized antenna by increasing the width of the folded arm and designing the bend structure of the arm. HFSS software is used for the main process of simulation design and optimization. The simulation and the experimental results showed that the input impedance is 18.3305 +j* 196.1702Ω, which is nearly conjugate-matched up the SL3ICS1202 G2XL chip with impedance of 24-j* 195Ω at 915MHz. Its total size is 33mm ×67 mm ×3 mm, bandwidth is 66 MHz, gain is -8.7848dB and the efficiency is 0.17106. It meets the demands of miniaturization, low cost and the input impedance conjugate matching.