High-Gain Circularly-Polarized Square Patch UHF RFID Reader Antenna Design for Smart Factory Applications

Year 2022, Issue: 34, 689 - 692, 31.03.2022

Gülbahar Güven , Ismail Akdag

https://doi.org/10.31590/ejosat.1084172

Abstract

In this paper, a UHF (Ultra High Frequency) RFID (Radio-frequency identification) circular polarization reader antenna is presented. The proposed antenna is a low cost, easy to manufacture UHF RFID reader antenna in the European UHF RFID band. The proposed antenna design employs an air-substrate patch antenna. The antenna size of 250x250x7mm. The proposed antenna works from 850 to 874 and 880 to 893 MHz with return loss less than -10 dB, thus covering the European UHF RFID band. The proposed antenna return loss bandwidth is 37 MHz. The gain of the designed antenna is 7.88 dBi at 867 MHz. Also, with a bandwidth of 864-870 MHz, the axial ratio (AR) is less than 3dB. This means that the antenna has circular polarization at 867 MHz. Each result has been calculated on CST Studio Suite 2020. The antenna recommended for use in smart factory applications promises a good antenna among RFID reader antennas.

Keywords

RFID Reader, UHF (Ultra High Frequency), RFID (Radio-frequency identification), Circular Polarization (CP), Axial Ratio

Thanks

This study has been carried out using the laboratory facilities of İzmir Katip Çelebi University Smart Factory Systems Application and Research Center (AFSUAM).

Akıllı Fabrika Uygulamaları için Yüksek Kazançlı Dairesel Polarize Kare Yama UHF RFID Okuyucu Anten Tasarımı

Abstract

Bu bildiride, bir UHF (Ultra Yüksek Frekans) RFID (Radyo frekansı tanımlama) dairesel polarizasyon okuyucu anteni sunulmaktadır. Önerilen anten, Avrupa UHF RFID bandında düşük maliyetli, üretimi kolay bir UHF RFID okuyucu antenidir. Önerilen anten tasarımı, bir hava-substrat yama anteni kullanır. 250x250x7mm antenin boyutudur. Önerilen anten 850 ila 874 ve 880 ila 893 MHz arasında ve -10 dB'den daha az geri dönüş kaybıyla çalışır, böylece Avrupa UHF RFID bandını kapsar. Önerilen anten dönüş kaybı bant genişliği 37 MHz'dir. Tasarlanan antenin kazancı 867 MHz'de 7.88 dBi'dir. Ayrıca, 864-870 MHz bant genişliği ile eksenel oran (AR) 3dB'den azdır. Bu, antenin 867 MHz'de dairesel polarizasyona sahip olduğu anlamına gelir. Her sonuç CST Studio Suite 2020 üzerinde hesaplanmıştır. Akıllı fabrika uygulamalarında kullanılması önerilen anten, RFID okuyucu antenler arasında iyi bir anten vaat ediyor.

Keywords

RFID Okuyucu, UHF (Ultra Yüksek Frekans), RFID (Radyo frekansı tanımlama), Dairesel Polarizasyon (CP), Eksenel Oran

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