A broadband circularly polarized antenna

Author

Xu, Junfeng ; Chen, Zhi Ning ; Qing, Xianming

Author_Institution

Inst. for Infocomm Res., Singapore, Singapore

fYear

2012

fDate

27-29 Aug. 2012

Firstpage

43

Lastpage

44

Abstract

A right-handed circularly polarized antenna is proposed with a broadened bandwidth in terms of axial ratio, impedance matching and gain. The antenna consists of a suspended slotted patch and an L-shaped feeding probe. An antenna prototype with an overall size of 250 mm × 250 mm × 50 mm exhibits a measured mimimum gain of 6.4 dBic, axial ratio less than 3 dB, and reflection coefficient less than -10 dB over the frequency band of 800-960 MHz, which makes the antenna suitable for ultra high frequency (UHF) RFID applications.

Keywords

UHF antennas; antenna feeds; broadband antennas; electromagnetic wave polarisation; impedance matching; microstrip antennas; radiofrequency identification; slot antennas; L-shaped feeding probe; UHF RFID applications; antenna prototype; axial ratio; frequency 800 MHz to 960 MHz; impedance gain; impedance matching; reflection coefficient; right-handed broadband circularly polarized antenna; suspended slotted patch; ultra high frequency RFID applications; Antenna measurements; Broadband antennas; Broadband communication; Frequency measurement; Gain; Gain measurement; broadband antenna; cicular polarization;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (APCAP), 2012 IEEE Asia-Pacific Conference on

Conference_Location

Singapore

Print_ISBN

978-1-4673-0666-9

Type

conf

DOI

10.1109/APCAP.2012.6333131

Filename

6333131