摘要
系统地研究了架设在凹形接地面上的倒L天线的电特性.采用矩量法分别求解了天线和凹形接地面上的静电荷分布密度和电流分布密度.计算了倒L天线与凹形接地面之间的静电容和天线的输入阻抗,与实验结果吻合良好.提出了采用多根倒L辐射线连在一起的结构来改善天线系统的电性能,使天线系统的静电容显著增加,同时降低了天线的谐振频率,并分析了该结构对天线的有效高度、辐射电阻和辐射方向图的影响.
This paper investigates the inverted L antennas mounted on a conducting concave surface. The moment method is used to calculate the static charge and current distribution on the antennas and the concave surface, respectively. The static capacitance between the inverted L antenna and the concave surface and the antenna input impedance are computed, which are in good agreement with the experimental results. A configuration of multiple inverted L radiate wires connected together is employed to significantly increase the static capacitance of the antenna system, thus lowering its resonant frequency. And the influence of this configuration on the antenna effective height, radiation resistance and radiation pattern is analyzed.
出处
《西安电子科技大学学报》
EI
CAS
CSCD
北大核心
2003年第4期506-509,共4页
Journal of Xidian University
基金
国家部委预研资助项目(410010202)
关键词
凹形接地面
倒L天线
矩量法
静电容
输入阻抗
inverted L antenna
conducting concave surface
moment method
static capacitance
