【作者】 杨放； 张朋； 郭陈江； 许家栋；

【Author】 YANG Fang, ZHANG Peng ,GUO Chen Jiang,XU Jia Dong Department of electronic engineering, Northwestern Polytechnic University 710072 School of information and automation, Xi’ an University of Architecture and Technology 710055)

【机构】 西北工业大学电子工程系；

【摘要】 卫星通信要求天线具有低尺寸,宽频带,圆极化等特点外,还要求其具有心形或赋形方向图。本文研究了一种用于卫星通信的宽带圆极化圆锥螺旋天线,可以通过改变天线的螺旋常数和高度等参数来改变天线的波束指向以满足卫星通信对天线方向图的要求。用求解Nakano方程的方法计算了天线上的电流分布,辐射方向图,输入阻抗,增益和轴比,大量计算结果与参考文献中基于电场积分方程得到的计算结果吻合良好。文中给出了相应的曲线供设计时参考。更多还原

【Abstract】 Satellite telecommunication requires the antennas to have not only low profile, broad bandwidth, and circular polarization, but also cardoid or conical radiation patterns. In this paper a kind of conical spiral antenna whose power patterns can be changed by setting its parameters such as the spiral constant and height to meet the requirements of power patterns in satellite telecommunications was analysed. Its current distribution, power patterns, input impedance were got by the Nakano equation. The results agree with those derived in the reference through the electric field integral equation. Some design graphs were presented.更多还原