螺旋天线大功率耐受通用设计方法  

General Method of High-Power Tolerant Design for Helix Antenna

作　　者：吕庆立[1] 王勇[1] 崔兆云[1] 李荣军[1] 冀有志[1] 

机构地区：[1]中国空间技术研究院西安分院,西安710000

出　　处：《空间电子技术》2013年第2期55-57,67,共4页Space Electronic Technology

摘　　要：螺旋天线重量轻,圆极化性能好,在卫星上得到了广泛的应用,尤其是近年,随着多波束天线的发展,螺旋天线做为馈源阵中的阵元天线受到了广泛关注。多波束天线的特点是可以动态分配功率到每个阵元,以期得到预想的波束。在功率集中模式下,某个阵元可能传输较大的功率,如果阵元使用螺旋天线,必须对其大功率耐受特性进行分析研究,保证其能在大功率下正常工作。文章通过理论推导,指出了影响螺旋天线大功率耐受特性的因素,并根据试验结果与仿真相结合的方法,给出了螺旋天线抗大功率耐受设计的方法,设计的螺旋天线通过了大功率试验考核。Helix antenna of lightweight has been widely used in space application for the good circular polarization per- formance. In recent years, helix antenna, which is frequently applied as element of feed array in multi-beam antenna, has been focused on greatly. RF power is allocated dynamically to each element to form the expected beams in multi-beam an- tenna system. Under the Power Concentrated Operation Mode, a certain element is excited with higher power, which is chal- lenging for ordinary helix antenna. It is necessary to study and analyze the ability of helix antenna to tolerate high power, and to make sure that the designed helix antenna can works well under higher power excitation. In this paper, several factor of high-power tolerance for helix antenna is concluded. And referring to the experiment with aid of numerical calculation, the design method of high-power helix antenna is proposed and described, and the related high-power experiments prove that the prototype of helix antenna can satisfy the requirement for high-power application, and also validate the method to achieve high-power tolerance.

关 键 词：大功率耐受 螺旋天线 设计方法 

分 类 号：TN823.31[电子电信—信息与通信工程]