A patch antenna for RFID reader

Author

Yang, Bing ; Feng, Quanyuan

Author_Institution

Sch. of Inf. Sci. & Technol., Southwest Jiaotong Univ., Chengdu

Volume

3

fYear

2008

fDate

21-24 April 2008

Firstpage

1044

Lastpage

1046

Abstract

In this paper a micro-strip patch antenna for UHF band RFID reader with a center frequency of 2.45 GHz is present. The proposed antenna is a single feed circularly polarized metallic patch and has a simple structure, it has corner truncated square patch, ground plane and a probe feed. The patch antenna is printed on Rogers R04003 material with dielectric constant of 3.38 and dielectric loss tangent of 0.0027. The structure of antenna is simple and low cost. Simulation and experiment results of a constructed prototype with the center operating frequency at 2.45 GHz showed that the antenna has an impedance bandwidth of about 30 MHz, return loss S11 of about -19 dB, a gain level of about 7.5 dB. In its 3 dB bandwidth VSWR is less than 1.4.

Keywords

UHF antennas; antenna feeds; microstrip antennas; permittivity; radiofrequency identification; RFID reader; Rogers R04003 material; dielectric constant; dielectric loss tangent; frequency 2.45 GHz; microstrip patch antenna; probe feed; single feed circularly polarized metallic patch; truncated square patch; Antenna feeds; Bandwidth; Dielectric constant; Dielectric losses; Dielectric materials; Frequency; Patch antennas; Polarization; Probes; Radiofrequency identification; RFID reader; bandwidth; gain; patch antenna;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Millimeter Wave Technology, 2008. ICMMT 2008. International Conference on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-1879-4

Electronic_ISBN

978-1-4244-1880-0

Type

conf

DOI

10.1109/ICMMT.2008.4540600

Filename

4540600