Title :
Frequency scanning antenna array with enhanced side lobe suppression
Author :
Boskovic, N. ; Jokanovic, Branka ; Nesic, A.
Author_Institution :
Inst. of Phys., Univ. of Belgrade, Zemun, Serbia
Abstract :
In this paper we present a novel design of frequency-scanning antenna array consisting of eight different pentagonal dipoles fed by balanced microstrip lines. Impedances of the dipoles are calculated to obtain high side lobes suppression. Feeding network between radiating elements contains four elongated split-ring resonators (SRRs) loaded balanced microstrip line in order to increase the frequency dependant phase difference between radiating elements. Scanning antenna exhibits gain around 11.5 dBi, SLL better than 18 dB for the beam scanning of 30 degrees in frequency range 10.02 to 10.27 GHz.
Keywords :
antenna feeds; antenna radiation patterns; dipole antenna arrays; microstrip antenna arrays; microstrip lines; microwave antenna arrays; microwave resonators; SRR; balanced microstrip lines; beam scanning; dipole impedance calculation; elongated split-ring resonators; feeding network; frequency 10.02 GHz to 10.27 GHz; frequency dependant phase difference; frequency scanning antenna array design; gain 11.5 dB; high side lobe suppression enhancement; pentagonal dipoles; radiating elements; Antenna arrays; Arrays; Dipole antennas; Electromagnetics; Gain; Impedance; Materials;
Conference_Titel :
Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS), 2014 8th International Congress on
Conference_Location :
Lyngby
Print_ISBN :
978-1-4799-3450-8
DOI :
10.1109/MetaMaterials.2014.6948597
