Original scientific paper

Octafilar Helical Antenna for Portable UHF-RFID Reader

Saber H. Zainud-Deen ; Faculty of Electronic Engineering, Minoufiya University, Egypt
Hend A. Malhat ; Faculty of Electronic Engineering, Minoufiya University, Egypt
Kamal H. Awadalla ; Faculty of Electronic Engineering, Minoufiya University, Egypt

Abstract

Octafilar helical antenna (OFHA) is proposed for handheld ultra‐high‐frequency (UHF) radio frequency identification (RFID) reader. The investigated antenna configuration consists of OFHA placed on reader device in the presence of human hand model. The antenna is designed at UHF band centered at 915 MHz. The antenna return loss, axial ratio, gain, co‐polarized and cross‐ polarized field components are calculated using the finite element method (FEM) and compared with that calculated by finite integration technique (FIT) for verification of the simulated results. A comparison between the performance of the quadrifilar helical antenna (QFHA) and the octafiliar helical antenna (OFHA) designed at 915 MHz in the presence of the reader device and human hand model is investigated. The OFHA introduces high gain, high front to back ratio, good axial ratio and omnidirectional coverage.

Keywords

Octafiliar helical antenna; RFID; Reader antenna; and finite element method

Hrčak ID:

160471

URI

https://hrcak.srce.hr/160471

Publication date:

1.1.2012.

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