Title :
High gain Fabry-Pérot circular polarization cavity antenna for UHF RFID applications
Author :
Hamzaoui, D. ; Djahli, F. ; Vuong, T.P. ; Kiani, Ghaffer I.
Author_Institution :
Dept. of Electr. Eng., Abderrahman Mira Univ., Béjaïa, Algeria
Abstract :
A Fabry-Pérot cavity antenna for UHF RFID application is presented. First, a circularly polarized antenna is designed to obtain a high gain of 9.82 dB at 868 MHz. Then a hexagonal patch type frequency selective surface is designed and placed above the primary antenna to be used as partially reflective surface (PRS) to enhance its gain. The overall dimension of the structure is about (1.73 λ0 * 1.5 λ0 * 0.53 λ0), where λ0 is the free-space operating wavelength. The simulation results yield a 13.12 dB realized gain, 1.61 % 3 dB gain bandwidth and an axial ratio less than 3 dB with a ±33° beamwidth at 868 MHz. The cavity reflex antenna exhibits a good efficiency of 96.13% and side lobe level (SLL) less than -14 dB.
Keywords :
frequency selective surfaces; microstrip antennas; radiofrequency identification; PRS; UHF RFID applications; cavity reflex antenna; circular polarization cavity antenna; free-space operating wavelength; frequency 868 MHz; frequency selective surface; gain 13.12 dB; gain 9.82 dB; hexagonal patch; high gain Fabry-Perot cavity antenna; partially reflective surface; side lobe level; Cavity resonators; Frequency selective surfaces; Gain; Periodic structures; Radiofrequency identification; Reflector antennas; Axial Ratio (AR); Circular Polarization (CP); Electromagnetic Bandgap structures (EBG); Fabry-Pérot Cavity Antenna (FPCA); Frequency Selective Surface (FSS); Partially Reflective Surface (PRS); Radio Frequency Identification (RFID; Side Lobe Level (SLL));
Conference_Titel :
Antenna Technology and Applied Electromagnetics (ANTEM), 2014 16th International Symposium on
Conference_Location :
Victoria, BC
DOI :
10.1109/ANTEM.2014.6887737
