A single band dual-fed circular polarization microstrip antenna for RFID application

Author

Sabran, M.I. ; Rahim, S.K.A. ; Rani, M.S.A. ; Nor, M.Z.M.

Author_Institution

Wireless Commun. Centre, Univ. Teknol. Malaysia, Skudai, Malaysia

fYear

2011

fDate

12-14 Dec. 2011

Firstpage

137

Lastpage

140

Abstract

This paper presents new design for single band circular polarization (CP) antenna with dual feedings. This antenna is designed for RFID application at 2.45 GHz. In this antenna design, the left corner side of the square patch is truncated. Then, two perpendicular feeding is connected to the patch to achieve Circular Polarization antenna. By combining the two perpendicular feedings with the truncated square patch in a dielectric substrate layer, the microstrip antenna for single band frequency circular polarization (CP) can be achieved with - 12.1dB return loss for 2.45 GHz. The simulated and measured results show that the proposed antenna has good circularly polarized radiations and the 3 dB axial-ratio bandwidth is more than 7.2%. Details of the obtained dual-band CP performances are presented and discussed in this report.

Keywords

UHF antennas; antenna feeds; antenna radiation patterns; microstrip antennas; polarisation; radiofrequency identification; RFID application; dielectric substrate layer; frequency 2.45 GHz; gain 3 dB; loss 12.1 dB; perpendicular feeding connection; single band dual-fed CP microstrip antenna; single band dual-fed circular polarization microstrip antenna; single band frequency CP; single band frequency circular polarization; truncated square patch antenna design; Antenna measurements; Loss measurement; Microstrip antennas; Polarization; Power transmission lines; Radiofrequency identification; RFID; Truncated; circular polarization antenna; dual-feed; single band;

fLanguage

English

Publisher

ieee

Conference_Titel

RF and Microwave Conference (RFM), 2011 IEEE International

Conference_Location

Seremban, Negeri Sembilan

Print_ISBN

978-1-4577-1628-7

Type

conf

DOI

10.1109/RFM.2011.6168714

Filename

6168714