Pattern Nulling By Iterative Phase Perturbation

Analytical array polynomial method for linear antenna arrays with phase-only control

“…. , 4) are (8,4,2,1). The phases of the roots of every subpolynomial are given in column 4 of Table 3.…”

“…These methods include linear and nonlinear optimization algorithms. The linear optimization algorithms can be used if small phases are assumed [7,8] or with the concept of dual phase configuration [9]. However, solving the problem of unconstrained values of the phases requires nonlinear optimization methods [10][11][12][13][14].…”

Genetically Evolved Phase-Aggregation Technique for Linear Arrays Control

“…The correction is done such that F (u) approximates the template specified by D(θ) which is defined in Equation (5). Following the same derivation of the previous section, the performance index can be written as…”

“…To avoid the limitation of the small phase restriction, large values for the phases are allowed using nonlinear algorithms. A linear algorithm for large phase values can be achieved using an iterative procedure with linear programming [5]. A general strategy for phase-only control have been described and is applicable to continuous apertures and to linear and planer arrays [6].…”

Microstrip Antenna Design Based on Stacked Patches for Reconfigurable Two Dimensional Planar Array Topologies

“…Antenna arrays have been widely employed in a great variety of applications, taking advantage of their beamforming [1], conformation [2] and pattern nulling [3] possibilities. Additionally, the behaviour of the array can be modified in real time by separately tuning the feeding signals of the different individual radiators, providing adaptive solutions [4,5].…”