Stretching strategy to improve radiation performances sparse array design based on combinatorial cyclic different sets approach

Abstract

In this paper we proposed a new strategy to improve radiation performance of sparse array antenna design when applied CDS approach with stretching inter-element spacing technique. As an example, the aperture of 32 classic full array elements (d=0.7λ) is stretched with uniform and non-uniform technique and then reduce to 16 elements using CDS approach. The simulation result showed the radiation performances is improved compare to design without stretching strategy.

A Proposed Design Method for Sparse Array Antenna by Using the Spacing Coefficient Algorithm

“…To confirm our proposed method, we conducted several experiments on various configurations of sparse arrays and compared their performance with the results of other sparse design methods in our previous work [13,14,24] and the results of other studies [7][8][9][10]12]. Experiments on the sparse array design method were carried out using Taconic TLY-5 substrate material with a thickness � 1.58 in and a dielectric permittivity ε r � 2.2.…”

“…Sparse array antenna design can be classi ed into at least ve methods such as mathematical calculation methods and structured algorithms [3][4][5][6][7], probability statistics and stochastic processes [8,9], polynomial factorization method [10], a combinatory mathematical method by using cyclic di erent sets (CDS) [11,12], and mutual coupling e ects method [12,13]. Combinatorial methods o er the advantages of thinning factors and reduced computation time demands compared to the stochastic and deterministic methods, and they perform better than the mutual coupling e ect method.…”

“…Combinatorial methods o er the advantages of thinning factors and reduced computation time demands compared to the stochastic and deterministic methods, and they perform better than the mutual coupling e ect method. Unfortunately, combinatorial methods also have the disadvantage of performance degradation [13,14], particularly for the sidelobe level (SLL) performances, compared to the deterministic algorithm method, which performs better than the controlled SLL performance degradation.…”

A Hybrid Technique Using Combinatorial Cyclic Difference Sets and Binomial Amplitude Tapering for Linear Sparse Array Antenna Design

“…The challenge when using the CDS approach for sparse array design is reducing the high SLL as compared to a full array configuration [22]. In antenna array design, amplitude tapering is a classical solution to improve SLL performance by controlling amplitude excitation for each array element.…”

“…In the combinatorial CDS method, SLL performance was described using a relation between and [16,22] as follows:…”