甚低频发射天线的损耗电阻研究

甚低频发射天线结构庞大,但其尺寸与波长相比仍属于电小天线,它的辐射电阻较小,天线的损耗电阻对天线辐射效率影响较大;天线的损耗主要来自于地损耗电阻,本文根据单极型天线地损耗电阻的理论计算公式,对设计时需着重考虑的关键参数进行了分析,并借助数值仿真计算方法对某十三塔天线的实例进行了计算验证。

Analysis of Loss Resistance for VLF Transmitting Antenna

The VLF transmitting antenna has a large structure, but its size is still a small electric antenna compared with the wavelength. Its radiated resistance is small, and the loss resistance of the antenna has a great influence on the radiation efficiency of the antenna. The loss of antenna mainly comes from the ground loss resistance. The theoretical calculation formula of the loss resistance of the monopole antenna is analyzed, and the key parameters that need to be considered in the design are analyzed. The numerical simulation method is used to verify the example of a thirteen tower antenna.