An Improved Antenna Array Pattern Synthesis Method Using Fast Fourier Transforms

Abstract

An improved antenna array pattern synthesis method using fast Fourier transform is proposed, which can be effectively applied to the synthesis of large planar arrays with periodic structure. Theoretical and simulative analyses show that the original FFT method has a low convergence rate and the converged solution can hardly fully meet the requirements of the desired pattern. A scaling factor is introduced to the original method. By choosing a proper value for the scaling factor, the convergence rate can be greatly improved and the final solution is able to fully meet the expectations. Simulation results are given to demonstrate the effectiveness of the proposed algorithm.

Development a New Technique Based on Least Square Method to Synthesize the Pattern of Equally Space Linear Arrays

“…Nowadays, in spite of long research on this subject, still, it is an interesting challenge for researchers and a variety of algorithms including stochastic and analytical methods has been reported in the literature [5,6]. A common type of antenna array pattern synthesis method is producing a pattern, which holds the main beam toward the required direction for a specified value of beam width, while Side Lobe Level (SLL) is kept small to prevent interference with other radiating sources [7][8][9][10].…”

Array Pattern Synthesis Using Particle Swarm Optimization with Dynamic Inertia Weight

“…There are many synthesis methods for array pattern of minimum sidelobe level (SLL) and null control [1][2][3]. These proposed methods attempt to find the best solution for sensors position distribution or complex weight coefficients of linear array.…”

“…Firstly, only sensor positions are considered for minimum SLL and null control in [1,5]. In [5], one example discussed the geometry of a 28-element array designed for SLL suppression in the region [0 ∘ , 180 ∘ ] and prescribed nulls at three groups of symmetric direction.…”

Array Pattern Synthesis Using a Digital Position Shift Method

“…Many methods can be adopted for array pattern synthesis of minimum Peak Sidelobe Level (PSL) [1]- [4]. These methods are proposed for nonlinear arrays, alternatively termed as aperiodic arrays, to search a sensors position distribution solution and they can use less number of sensors to meet similar pattern specifications [5]- [8].…”