Broadband single-fed single-patch circularly polarized antenna for UHF RFID applications

Author

Kwa, Hao Wei ; Qing, Xianming ; Chen, Zhi Ning

Author_Institution

Nat. Univ. of Singapore, Singapore

fYear

2008

fDate

5-11 July 2008

Firstpage

1

Lastpage

4

Abstract

A broadband single-fed single-patch circularly polarized antenna for UHF RFID application has been presented in this paper. The simulated and measured results have shown desirable performance with the gain of Gt7 dBic, VSWR of Lt2, and AR of Lt3 dB within the frequency range of 0.84-0.935 GHz (10.7%). The antenna is also low cost due to the simple structure and no use of any dielectric substrate. Due to the broadband performance covering most of the UHF RFID band, this proposed antenna can be considered a versatile reader antenna considering its relatively good performance and low cost.

Keywords

UHF antennas; antenna feeds; broadband antennas; electromagnetic wave polarisation; microstrip antennas; radiofrequency identification; UHF RFID application; broadband single-fed single-patch circularly polarized antenna; dielectric substrate; frequency 0.84 GHz to 0.935 GHz; versatile reader antenna; Antenna measurements; Broadband antennas; Costs; Dielectric measurements; Frequency measurement; Gain measurement; Polarization; Radiofrequency identification; UHF antennas; UHF measurements;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE

Conference_Location

San Diego, CA

Print_ISBN

978-1-4244-2041-4

Electronic_ISBN

978-1-4244-2042-1

Type

conf

DOI

10.1109/APS.2008.4619871

Filename

4619871