The quasi-near fields of dipole antennas

The quasi-near fields of dipole antennas
复制标题

偶极子天线的准近场

DOI：
--
复制
发表时间：
1967
期刊：
影响因子：
--
通讯作者：
P. Bannister
P. Bannister
中科院分区：
--
文献类型：
--
作者：
P. Bannister

文献摘要

被引文献

相似文献

由垂直和水平偶极天线（电和磁类型）位于上方，上，或下的半无限导电介质的表面产生的电场和磁场分量的推导和提出的准近距离。(The测量距离远大于地球趋肤深度，但远小于自由空间波长）。以前得出的结果进行了简要总结。的水平分离 发射和接收偶极天线之间的H0与它们的高度相当。推导是将准近似应用于基本索末菲积分的结果，在某些情况下，还利用了互易定理。当 h0远大于天线高度时，场分量表达式的公式简化为先前导出的结果。据观察，一些场分量表达式的特点是不寻常的高度增益（或损失）的功能。提供了这些函数的一些数值。
The electric- and magnetic-field components produced by vertical and horizontal dipole antennas (both electric and magnetic types) located over, on, or below the surface of a semi-infinite conducting medium are derived and presented for the quasi-near range. (The measurement distance is much greater than an earth skin depth, but much less than a free-space wavelength.) Previously derived results are briefly summarized. The horizontal separation ho between the transmitting and the receiving dipole antennas is comparable to their heights. The derivations are the result of applying the quasi-near approximations to the basic Sommerfeld integrals and, in some cases, utilizing the reciprocity theorem. When ho is much greater than the antenna heights, the formulas for the field-component expressions reduce to previously derived results. It is observed that some of the field-component expressions are characterized by unusual height gain (or loss) functions. Some numerical values for these functions are provided.