Title :
Antenna for RFID reader
Author :
Park, Sooman ; Park, Kidong
Author_Institution :
Dept. of Inf. & Commun., Dongkang Coll. Univ., Gwangju, South Korea
Abstract :
In this paper, the aperture-coupled circular-polarized microstrip antenna for RFID reader system is presented. The feed structure is the slot-coupled configuration using single microstrip line, which can be designed and produced easily. This structure can also reduce a size of the antenna. A kind of pinwheel-slot is proposed as a shape of slot on the ground plane. Iterative simulation is performed to get an optimal design for the antenna structure. A few of critical parameters is investigated to find the effects on the input impedance and CP axial ratio. The simulation results for LHCP and RHCP operations are also compared. The same technique can be used to characterize other parameters of the antenna for RFID system.
Keywords :
antenna feeds; aperture-coupled antennas; electric impedance; electromagnetic wave polarisation; iterative methods; microstrip antennas; microstrip lines; radiofrequency identification; slot antennas; CP axial ratio; LHCP operation; RFID reader system; RHCP operation; antenna size; antenna structure; aperture-coupled circular-polarized microstrip antenna; feed structure; impedance; iterative simulation; microstrip line; pinwheel-slot; slot-coupled configuration; Apertures; Bandwidth; Impedance; Microstrip; Microstrip antennas; Radiofrequency identification; RFID; antenna; aperture; circular polarization; pinwheel slot;
Conference_Titel :
Ubiquitous and Future Networks (ICUFN), 2011 Third International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-4577-1176-3
DOI :
10.1109/ICUFN.2011.5949145
