Title :
A patch antenna for RFID reader
Author :
Yang, Bing ; Feng, Quanyuan
Author_Institution :
Sch. of Inf. Sci. & Technol., Southwest Jiaotong Univ., Chengdu
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;
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
DOI :
10.1109/ICMMT.2008.4540600
