摘要
甚低频发射天线为垂直天线,虽然其尺寸很大但相对波长非常小,属于电小天线;为了提高天线辐射效率,改善电流分布,通常在天线顶部进行加载,使天线顶端电流不再为零,从而提高天线的有效高度。另外通过敷设大型地网系统亦可以提高天线的辐射效率。以典型的伞形甚低频发射天线为例针对天线加载和敷设地网两种方式采用矩量法进行数值计算,并提供电流分布仿真结果和结论。
The very-low frequency transmit antenna is a vertical antenna, It has very large scale but the electric dimension is very small to its wavelength. In order to enhance the radiated efficiency and amend the current distribution of the antenna,people take measures by adding top-load and lay big ground screen. The umbrella toploaded antenna is calculated in the paper by numerical calculation Mom. And the input impedance and current distribution are obtained ultimately.
出处
《舰船电子工程》
2008年第1期71-73,3,共4页
Ship Electronic Engineering
