Abstract
This work presents a miniature microstrip antenna at 2.45 GHz by using the slots technique. This microstrip antenna is fed by a CPW technique and designed for RFID reader system on FR4 substrate. A size reduction equal to 66.6% has been obtained compared to the conventional rectangular microstrip antenna. The total area of the final circuit is 19x31 mm2. The validated antenna has good matching input impedance with a stable radiation pattern, a loss return of -40 dB, and a gain of 1.78 dBi, a prototype of the proposed antenna has been fabricated and measured.
Highlights
This paper presents the slot technique to miniaturize the microstrip antenna for RFID
The abbreviation RFID stands for radio frequency identification, i.e. information carried by electromagnetic waves
A maximum current is observed around the L slots placed at low side, and around the feed line
Summary
This paper presents the slot technique to miniaturize the microstrip antenna for RFID application. The abbreviation RFID stands for radio frequency identification, i.e. information carried by electromagnetic waves. An RFID system is generally composed from a reader, and one or more tags. The communication between the reader and the tag is achieved by modulated backscattering of the reader’s carrier wave signal. The RFID system is used in many applications as transport, payment systems, access control, and logistic. Most RFID systems operate in either the low frequency region (30-300 kHz), the high frequency band (3-30 MHz), the ultra-high-frequency band (300 MHz-3 GHz), or in the microwave band (3GHz-40 GHz) [1,2,3,4,5,6]
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