Title :
Sidelobe Cancellation for Uniformly Excited Planar Array Antennas by Controlling the Side Elements
Author :
Mohammed, J.R. ; Sayidmarie, K.H.
Author_Institution :
Coll. of Electron. Eng., Univ. of Mosul, Mosul, Iraq
Abstract :
A sidelobe cancellation over a wide angular range for the uniformly excited planar array is proposed. The approach is to readjust the amplitude and phase excitations of the boundary elements only, while keeping the rest of elements unchanged. Simple expressions for computing the required amplitude and phase excitations of these boundary elements are given. The technique simplifies the feed network as it requires only one attenuator and two phase shifters. Simulation results show that cancellation of sidelobes across a wide angle can be obtained.
Keywords :
antenna radiation patterns; attenuators; phase shifters; planar antenna arrays; amplitude excitations; attenuator; boundary elements; feed network; phase excitations; phase shifters; side elements control; sidelobe cancellation; uniformly excited planar array antennas; wide angular range; Attenuators; Finite element analysis; Phase shifters; Phased arrays; Planar arrays; Antenna arrays; planar arrays; sidelobe cancellation;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2014.2325025