Position-only synthesis of uniformly excited elliptical antenna arrays with minimum element spacing constraint

Abstract

Pattern synthesis of non-uniform elliptical antenna arrays is presented in this paper. Only the element positions of the antenna arrays are optimized by the combination of differential evolution (DE) and invasive weed optimization (IWO) to reduce the peak side lobe level (PSLL) of the radiation pattern. In order to avoid the overlap of the array elements, the minimum spacing of the adjacent elements is constrained. Also, the beam width of the radiation pattern can be constrained effectively. Three elliptical antenna arrays that have 8, 12, and 20 elements are investigated. The synthesis results show that the introduced method can present a good side lobe reduction for the radiation pattern. Compared with other optimization methods, the method proposed in this paper can obtain better performance.

Diseño de un Arreglo de Antenas Microstrip con Parches en forma de Elipse Dual Band para aplicaciones de Wi-Fi y WiMAX

“…La antena consiste en un arreglo lineal de 4 elementos con parches en forma de elipse, por lo tanto, para generar una elipse se requiere un ángulo paramétrico, dos círculos concéntricos de radios A y B, donde el círculo de radio B define el eje menor y el radio del círculo A el eje mayor [19]. Se traza una línea radial desde el centro con un ángulo que corta estas circunferencias en los puntos A y B.…”