Pattern Synthesis of Circular Antenna Array With Directional Element Employing Deterministic Space Tapering Technique

Abstract

Abstract-This paper proposes the concept of sparse appended with the space tapering technique for the synthesis of an antenna radiation pattern. The procedure experiments on a Circular Antenna Array (CAA) configuration comprising of directional element (1 + cos(ϕ)). The sparse initiates the minimum number of active elements in the CAA, while the space tapering technique gives the complex excitations that yield a beam pattern with constraints such as Side Lobe Level (SLL) and Beam Width (BW) in relation to Dolph-Chebyshev radiation pattern. The phase mode analysis, which is an built-in procedure in the proposed technique explores the circular antenna array configuration characteristics. The simulation results justify the effectiveness of the proposed technique for obtaining the desired radiation pattern synthesis.

Pattern synthesis of linear and ring arrays with minimum number of elements using FFT and Bessel transformation

“…The most well-known analytical methods include Fourier Transform (FT) and Woodward-Lawson technique 10 , Pattern Integrating (PI) approach 11 , 12 , Deterministic Space Tapering (DST) Technique 13 , Eigen-Vector Decomposition (EVD) 6 , Fourier’s Coefficients Equating Method and Bessel transform 14 , K-Means solution 15 and Least Square Estimation Error 7 . Also, various types of evolutionary algorithm-based methods such as Genetic Algorithm (GA), Particle Swarm Optimization (PSO), and Differential Evolution Algorithm (DEA) are introduced in the literature for this target 16 , 17 .…”

Phase-Only Nulling With Limited Number of Controllable Elements

“…Null steering in the radiation patterns of the antenna arrays can effectively overcome this problem by placing some selected nulls toward those undesired signals directions. Generally, null steering can be achieved by controlling the amplitude-only weighting [1][2][3][4], phase-only weighting [5][6][7][8][9][10][11][12], and complex (both amplitude and phase) weighting [13][14][15][16][17][18] of array elements excitations. It can also be achieved by controlling the separation distances between array elements [19,20].…”