Circularly polarized truncated planar antenna with single feed for UHF RFID reader

Author

Suwalak, Rattapong ; Phongcharoenpanich, Chuwong

Author_Institution

King Mongkut´´s Inst. of Technol. Ladkrabang, Bangkok

fYear

2007

fDate

18-20 Oct. 2007

Firstpage

103

Lastpage

106

Abstract

This paper presents truncated planar antenna that radiates unidirectional beam with circular polarization. This antenna is proposed for installing at the reader of the radio frequency identification (RFID) at ultra high frequency (UHF) band. The center frequency is 923 MHz with the bandwidth from 920 MHz to 925 MHz. The antenna structure is simple because we use the single feed for circular polarization. The prototype antenna was fabricated to measure the characteristics. The pattern is unidirectional pattern with directivity around 8.92 dBi and axial ratio of 1.73 dB at the center frequency. The obtained bandwidth is 16 MHz.

Keywords

UHF antennas; antenna feeds; electromagnetic wave polarisation; planar antennas; radiofrequency identification; UHF RFID reader; antenna feed; bandwidth 16 MHz; circular polarized antenna; frequency 920 MHz to 925 MHz; radio frequency identification; truncated planar antenna; unidirectional beam radiation; Antenna feeds; Antenna measurements; Bandwidth; Frequency; Planar arrays; Polarization; Prototypes; Radiofrequency identification; UHF antennas; UHF measurements;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2007. APCC 2007. Asia-Pacific Conference on

Conference_Location

Bangkok

Print_ISBN

978-1-4244-1374-4

Electronic_ISBN

978-1-4244-1374-4

Type

conf

DOI

10.1109/APCC.2007.4433514

Filename

4433514