Title :
Dual polarized reader antenna array for RFID application
Author :
Padhi, S.K. ; Karmakar, N.C. ; Law, C.L.
Author_Institution :
Molecular Sci. Div., CSIRO, Melbourne, Vic., Australia
Abstract :
This paper presents the design and development of a compact dual linearly polarized aperture coupled microstrip patch antenna array at S-band for RFID reader applications. The 2/spl times/2 array uses two symmetric dog-bone shaped coupling aperture. The prototype array yields 14.6 dBi peak gain, 36/spl deg/ half-power beam width (HPBW) in both E and H-planes, 28 dB cross-polarization levels and an isolation better than 35 dB between the two polarization at the designed frequency bandwidth. These performances make the antenna very much suitable for RFID reader applications.
Keywords :
S-parameters; UHF antennas; antenna radiation patterns; aperture antennas; electromagnetic wave polarisation; identification technology; microstrip antenna arrays; 2.45 GHz; 5.8 GHz; C-band; RFID reader applications; S-band; S-parameter; anechoic chamber; compact dual antenna array; coupled microstrip patch antenna; cross-polarization levels; half-power beam width; impedance characteristics; linearly polarized aperture antenna; radiation patterns; shared aperture antenna array; symmetric coupling aperture; symmetric dog-bone shaped coupling; tag antenna; Antenna arrays; Apertures; Frequency; Linear antenna arrays; Microstrip antenna arrays; Microstrip antennas; Patch antennas; Polarization; Prototypes; Radiofrequency identification;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2003. IEEE
Conference_Location :
Columbus, OH, USA
Print_ISBN :
0-7803-7846-6
DOI :
10.1109/APS.2003.1220171
