antenna structures with low side lobe levels are normally the main goal during antenna design. in this paper, a new method for reduction of radiation pattern side lobe level in phased array antenna with uniform and non-uniform weighting is presented. in this method, by changing the array elements weight or adding several elements, such as slc technique, the pattern with low side lobe level can ...

In this work, the method of iterative Fourier transform phase reconstruction, conventionally used in holography and optical image reconstruction, is applied to phase only synthesis of antenna patterns. The method is applied to two types of pattern synthesis problems: "main lobe beam shaping" and "side-lobe-level reduction". The proposed method is most useful in the efficient employment of attai...

Abstract This paper presents a study on the side-lobe level (SLL) reduction with transmission type metasurface (MTS) using concept of non-uniform array technique and transmit antenna. According to antenna technique, SLL can be controlled by controlling amplitude phase distribution simultaneously. Initially, is used design MTS. The radiation characteristics MTS are analyzed exciting rectangular ...

Pulse compression is used to achieve large radiated energy but simultaneously a short pulse for range resolution. Range resolution is an ability of the receiver to detect nearby targets. Pulse compression can also detect small target signals out of clutter. The matched filter output consists of unwanted but unavoidable side lobes however the reduction of this side lobe strength is the active re...

Abstract In this paper, the design of non-uniform circular antenna arrays of isotropic radiators with optimum side lobe level reduction is investigated. Two global evolutionary optimization methods (namely; the biogeography based optimization and the self-adaptive differential evolution) are used to determine an optimum set of weights and positions that provide a radiation pattern with optimum ...

Antenna array design is one of the most imperative electromagnetic optimization problem of current interest. In the antenna arrays the side lobe level is main problem which causes waste of energy. In this paper, different evolutionary algorithms are presented for reduction of side lobe level in antenna array. The invasive weed optimization(IWO) algorithm outperform PSO, ACO, and GA based on met...