An Iterative Approach for the Synthesis of Optimized Sparse Time-Modulated Linear Arrays

Abstract

Abstract-In this paper, the synthesis of sparse time-modulated linear arrays with minimum number of elements and controlled harmonic radiations is investigated. The proposed iterative approach based on a particle swarm optimization is aimed at finding the array configuration with the minimum number of elements and the optimal pulse sequence that affords a beam pattern with the same features of a reference one also limiting the amount of sideband radiations under a specific threshold. A set of representative numerical examples is discussed to assess the effectiveness and the reliability of the proposed approach.

Pulse shape optimization in time-modulated arrays for sideband radiation suppression

“…The introduction of effective design strategies for TMAs has fostered their use in several applications, among them monopulse radars based on arrays generating sum and difference patterns [18][19][20], radar/communications systems where there is the need to adaptively generated single or multiple nulls in the radiation pattern to suppress interfering signals [21,22], and innovative multiple channel communication systems [23]. The design of unconventional TMA array layouts has been also addressed [24][25][26] as well as the possibility to exploit the SR instead of suppressing them [23,27].…”

Power leakage minimization in time‐modulated linear antenna array with optimized switching strategies employing modified harmony search algorithm

“…The exploitation of PSO for 14-, 16-, 20-, and 30-element TMLAA for minimization of SBL and SLL with optimized spacing and optimized excitation amplitude are reported in Refs. [18][19][20][21][22].…”