Abstract

This paper presents the miniaturization of a single microstrip antenna at 2.45 GHz in the ISM Industrial Scientific and Medical. This microstrip antenna, using the slot technique, is designed for RFID tag system on FR4 substrate with dielectric constant of 4.4, and simulated performing CST Microwave Studio. The total area of the final circuit is 23 x 37.83 mm2. The validated antenna has a good matching input impedance range from 2.428 GHz to 2.472 GHz with a stable radiation pattern, a loss return of -36.45 dB, a directivity of 1.89 dB, and a gain of 1.02 dBi.

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