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  1. (1. 西安电子科技大学 天线与微波技术重点实验室,陕西 西安 710071;
    2. 海军工程大学 电子工程学院,湖北 武汉 430033)
  • 收稿日期:2007-11-13 修回日期:1900-01-01 出版日期:2008-12-20 发布日期:2008-12-20
  • 通讯作者: 柳超

Analysis and calculation of ground loss resistance for a VLF T-type antenna array with the ground screen

LIU Chao1,2;LIANG Yu-jun2;LIU Qi-zhong1;FU Yun2

  1. (1. Key Lab. of Antennas and Microwave Technology, Xidian Univ., Xi’an 710071, China;
    2. School of Electronic Eng., Naval Univ. of Engineering, Wuhan 430033, China)
  • Received:2007-11-13 Revised:1900-01-01 Online:2008-12-20 Published:2008-12-20
  • Contact: LIU Chao

摘要: 改进了甚低频T形天线阵地网损耗电阻的解析算法,增加了长顶线上的电流对地网磁场损耗电阻的贡献,提高了计算精度.基于天线阵近场的矩量法数值仿真结果,对天线近区的地损耗功率进行数值积分,得到了地网损耗电阻的一种数值算法. 用这两种算法计算了一个实例天线阵的地网损耗电阻,计算结果均与测量数据相一致,计算精度比现有解析法的精度提高了30%~50%.

关键词: 矩量法, 甚低频天线, 损耗电阻

Abstract: The methods for calculating the ground loss resistance of a very low frequency (VLF) T-type antenna array with the ground screen are studied. The magnetic field loss produced by the currents on antenna top wires of an arbitrary length is introduced to the classical analytical method. Based on the numerical simulation results of the near fields by the method of moments, the numerical integration of the ground loss power for an antenna array are calculated and a numerical method for computing the loss resistance of the ground screen is established. The loss resistance of the grounding system of a typical antenna array is computed using these two methods respectively. Results agree well with the measured data, and the precision is 30%~50% better than that of the classical analytical method.

Key words: method of moments, very low frequency antenna, loss resistance


  • TN820