Title :
Antenna with circular polarization composed of bent crossed dipoles in a cylindrical cavity
Author :
Radnovic, Ivana ; Nesic, A. ; Ilic, Marija ; Nesic, D.
Author_Institution :
IMTEL Inst., Belgrade, Serbia
Abstract :
The paper presents cavity backed printed antenna with circular polarization (CBACP). The antenna radiating elements are two crossed double bent dipoles that are printed on the dielectric substrate and have complex conjugated impedances. In order to diminish environmental influences the antenna is placed in the metallic cylindrical cavity. By using double bent dipoles the overall antenna dimensions are significantly reduced. CBACP is simulated and realized for operation around 5.9 GHz. Simulated and measured results show good agreement. Furthermore, investigation of cavity parameters and their effect on antenna characteristics has been carried out in order to achieve (a) minimal axial ratio, (b) maximal gain and aperture efficiency and (c) broader axial ratio bandwidth (AR<;3 dB).
Keywords :
dielectric devices; dipole antennas; electromagnetic wave polarisation; microstrip antennas; CBACP; antenna radiating element; aperture efficiency; broader axial ratio bandwidth; cavity backed printed antenna with circular polarization; complex conjugated impedance; crossed double bent dipole antenna; dielectric substrate; metallic cylindrical cavity; minimal axial ratio; Antenna measurements; Cavity resonators; Dipole antennas; Gain; Polarization; Circular polarization; cavity-backed antennas; orthogonal dipoles; printed antennas;
Conference_Titel :
Telecommunication in Modern Satellite, Cable and Broadcasting Services (TELSIKS), 2013 11th International Conference on
Conference_Location :
Nis
Print_ISBN :
978-1-4799-0899-8
DOI :
10.1109/TELSKS.2013.6704416
