Otero-Gómez Ibai, López-Martín María Elena, Rodríguez-González Juan Antonio, Ares-Pena Francisco José
Department of Applied Physics, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain.
Department of Morphological Sciences, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain.
Sensors (Basel). 2025 Mar 8;25(6):1685. doi: 10.3390/s25061685.
A method for the synthesis of equally spaced antenna arrays based on the extension of the Orchard-Elliott-Stern technique to radiation patterns with three roots on the negative real axis of the Shelkunoff unit circle is presented. One of these roots is placed on the unit circle and the other two are off the unit circle with coordinates and 1/r. For a desired side lobe level (SLL), the synthesis of patterns with these roots allows for a multiplicity of solutions with different amplitude ratios, obtained by varying the value of r, each of which presents radiation patterns with different beamwidths and directivity, but with two fewer side lobes than the patterns obtained without these restrictions in the roots. The technique has been thoroughly applied to Dolph-Chebyshev patterns of 10, 18 and 40 elements, with a λ/2 spacing and an SLL that guarantees maximum directivity in both cases. This approach ensures the study of examples of all sizes, from small to large. The findings derived from this technique would be applicable in the domain of wireless communications, where the necessity arises for radiation patterns that exhibit low SLL and adaptive beamwidth.
提出了一种基于将果园 - 埃利奥特 - 斯特恩技术扩展到谢尔库诺夫单位圆负实轴上有三个根的辐射方向图来合成等间距天线阵列的方法。其中一个根位于单位圆上，另外两个根在单位圆外，坐标分别为 和1/r。对于期望的旁瓣电平（SLL），利用这些根来合成方向图允许通过改变r的值获得具有不同幅度比的多种解，每一种解都呈现出具有不同波束宽度和方向性的辐射方向图，但比在根处没有这些限制时获得的方向图少两个旁瓣。该技术已被全面应用于10、18和40个单元的多尔夫 - 切比雪夫方向图，间距为λ/2，且在两种情况下SLL都保证最大方向性。这种方法确保了从小规模到大规模的所有尺寸示例的研究。从该技术得出的结果将适用于无线通信领域，在该领域中需要具有低SLL和自适应波束宽度的辐射方向图。
