摘要
为确保电磁建模的准确性,以有效设计短波全频段性能优越的鱼骨天线,研究了鱼骨天线集合线的建模方式对计算结果的影响。对集合线按等效网络和导线结构两种方式建模,基于Pocklington方程和正弦插值基函数,采用矩量法对实际地面上的短波鱼骨天线进行计算。对两种建模方式计算得到的天线方向图、增益、最大辐射仰角、效率以及阻抗特性进行了比较研究,并分析了集合线对鱼骨天线辐射特性的影响。研究结果表明:在某些情况下集合线的建模方式对计算结果的影响较大,为得到更接近实际情况的计算结果,确保短波全频段鱼骨天线设计的有效性,采用按导线建模的方式更为合适。
To ensure accurate electromagnetic modeling, which guarantees the validity of design on fishbone antenna with good performance in the whole short-wave band, the influence of feederline modeling on calculation result is researched. There are two modeling methods for feederline, equivalent network method and wire structure method. On the basis of Pocklington equation and sine interpolation base function, the moment method is used to calculate the short-wave fishbone antenna with the two modeling methods. The results of the antenna pattern, gain, the radiation elevation angle, efficiency and impedance characteristic calculated by the two methods are compared and investigated. Also the influence of the feederline on the radiation characteristic of the fishbone antenna is analyzed. It is indicated that the feederline modeling influences the calculated results greatly. In order to obtain the results consistent with actuality and ensure the validity of the design on the fishbone antenna in the whole short-wave band, the wire structure modeling method for feederline is more appropriate.
出处
《电波科学学报》
EI
CSCD
北大核心
2011年第5期973-978,共6页
Chinese Journal of Radio Science
基金
国家部委基金资助项目
关键词
鱼骨天线
集合线
建模
矩量法
fishbone antenna
feederline
modeling
moment method
