摘要
机载甚低频天线系统中的双拖曳天线是用于对潜通信VLF/LF的发射天线。双拖曳天线(DTWA)由一条短天线(STWA)和一条长天线(LTWA)共同组成,总长度是波长的一半。本文主要讨论双拖曳天线的一种计算方法,具体是通过分析天线的实际运动状态来建立数学模型,并计算天线的电性能参数。由于此种分析方法必须利用空气动力学来分析天线受力状态,其相关计算极其复杂,但其电性能计算结果比较精确。
The Dual Trailing Wire Antenna （DTWA） on an Aircraft antenna system is used to transmit VLF/LF messages to submarines. The DTWA is formed of a Short Trailing Wire Antenna （STWA） and a Long Trailing Wire Antenna （LTWA）, the total length of both wires is about one -half of a wavelength. In the paper we mainly talk about a method about computing the impedance of the Dual Trailing Wire Antenna （DTWA）. We build the model of antenna through analysis the antenna＇s state,and work out the impedance of the antenna. For we must use the method of air dynamics to analysis antenna＇s shape, it is very complicated, but the result is higher precise.
出处
《现代电子技术》
2007年第1期14-16,共3页
Modern Electronics Technique
