宽带圆极化球面螺旋天线研究

研究了一种具有宽带、小尺寸、圆极化特点的新型球面螺旋天线,采用螺旋线段对天线进行划分,曲线三角基函数和脉冲检验的矩量法分析了该天线的驻波、圆极化及方向图等特性。分析结果表明,计算天线上的电流分布时未知系数大量减少,提高了计算速度;与传统球面螺旋天线、半球面螺旋天线相比,该天线具有更加良好的辐射特性,在卫星通信领域有着巨大的应用前景。

Study of Wideband Circular Polarized Spherical Helical Antennas

A novel spherical helical antenna with wideband,low profile and circular polarized characteristics is studied in this paper.The VSWR,circular polarization and radiation patterns are analyzed by the method of moment,in which the antenna wire is partitioned with helical segments,the subsection triangle function is chosen as a basic function and the pulse basic function as a test function.The analysis results indicate that the number of the unknown matrix to calculate is much reduced and the computing time is much saved,too.Compared with the traditional spherical and hemispherical helical antenna,this novel antenna has better radiation characteristics,which show that it is of great potential value in the field of satellite communications.