Title :
Pattern synthesis for multi-feed reflector antenna using IWO algorithm
Author :
Foudazi, A. ; Mallahzadeh, A.R. ; Taheri, M. M Samadi
Author_Institution :
Electr. & Electron. Eng. Dept., Shahed Univ., Tehran, Iran
Abstract :
In this paper, a new optimization algorithm to design shaped beam antenna is proposed. It is shown that by using offset parabolic reflector antenna and a linear array of horn antennas with one-wavelength spacing in focal point, Invasive Weed Optimization (IWO) algorithm can be used for amplitude and/or phase of source antennas to provide desired cosecant squared radiation patterns. To achieve a simple cosecant squared radiation pattern, amplitudes and phases of 11 source antennas (22 parameters) are optimized with no constraint by IWO and the results are compared with Particle Swarm Optimization (PSO) algorithm. Convergence diagram and radiation pattern results confirm the capability of IWO algorithm in shaped beam antenna design.
Keywords :
antenna radiation patterns; convergence; horn antennas; linear antenna arrays; offset reflector antennas; optimisation; reflector antenna feeds; IWO algorithm; antenna amplitude; antenna phase; convergence diagram; cosecant squared radiation patterns; focal point; invasive weed optimization algorithm; linear horn antenna array; multifeed reflector antenna; offset parabolic reflector antenna; one-wavelength spacing; pattern synthesis; shaped beam antenna design; Algorithm design and analysis; Antenna radiation patterns; Convergence; Horn antennas; Optimization; Reflector antennas; Offset parabolic reflector antenna; invasive weed optimzation (IWO); multi-feed reflector; particle swarm optimization (pso); shaped beam;
Conference_Titel :
Antennas and Propagation (EUCAP), 2012 6th European Conference on
Conference_Location :
Prague
Print_ISBN :
978-1-4577-0918-0
Electronic_ISBN :
978-1-4577-0919-7
DOI :
10.1109/EuCAP.2012.6206381
