Design of an U shaped slotted patch antenna for RFID Vehicle Identification

Abstract

The proliferation of IoT can be owed to the capability of a device to identify itself wirelessly using electromagnetic waves. The ease of tracking and monitoring, data capturing, data collection with object identification can be done through the RFID system. In the RFID system, passive linearly polarised tag antenna will sense the RF power from the reader and advertise its unique code which has to be sensed by the circularly polarised active reader antenna. Design of antenna, especially for RFID systems is an art in itself. In this work, a U shaped slotted microstrip patch antenna for RFID reader intended for microwave applications is proposed. The proposed antenna is designed by using the substrate Rogers R04350 which provides a return loss of 190MHz (2.39GHz- 2.58GHz) with the gain of 4.32dB, VSWR of 0.6157 and directivity of 4.67dB. The proposed antenna is designed and simulated using Ansoft HFSS.