UHF RFID Reader Antenna With a Wide Beamwidth and High Return Loss

Author

Son, Hae-Won ; Park, Hyuk ; Lee, Kyong-Hee ; Jin, Gwang-Ja ; Oh, Moon-Kyun

Author_Institution

Div. of Electron. & Inf. Eng., Chonbuk Nat. Univ., Jeonju, South Korea

Volume

60

Issue

10

fYear

2012

Firstpage

4928

Lastpage

4932

Abstract

A compact circularly polarized antenna with a wide beamwidth and high return loss (RL) is presented. The antenna consists of four U-shaped metal strips sequentially rotated and fed with a 90 ° phase difference feed network located beneath the ground plane. The antenna is designed to operate at around 915 MHz for UHF radio frequency identification applications, and the experimental results show that it has a wide beamwidth of over 114 ° and high RL of over 34 dB in the 902-928 MHz range.

Keywords

UHF antennas; antenna feeds; electromagnetic wave polarisation; radiofrequency identification; RL; U-shaped metal strip; UHF RFID reader antenna; UHF radiofrequency identification application; antenna feed network; compact circularly polarized antenna; frequency 902 MHz to 928 MHz; ground plane location; return loss; Antenna measurements; Antenna radiation patterns; Feeds; Metals; Probes; Radiofrequency identification; Circular polarization; high return loss; radio frequency identification (RFID); wide beamwidth;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2012.2207349

Filename

6236087