Pulse propagation on a horizontal wire above ground: Far-zone radiated fields

Donald G. Dudley; Kendall F. Casey

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Pulse propagation on a horizontal wire above ground: Far-zone radiated fields

机译：脉冲在地面以上水平线上的传播：远区辐射场

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A transient current pulse propagating on a semi-infinite wire above ground is considered. A quasi-transverse electromagnetic approximation to the modal equation for the propagation wave number is used to obtain the time history of the pulse on the wire. Pulse amplitude decay and degradation of rise time as a function of distance along the wire are demonstrated. The classical Sommerfeld expressions for the field of an infinitesimal horizontal current element over ground are integrated over the wire to give the frequency domain fields. Saddle point integration techniques yield the far-zone fields in closed form for polar angles away from grazing. A numerical inverse Fourier transform yields the transient response. Representative results for the far-zone fields in the frequency and time domains are presented.

机译：考虑在地面以上的半无限线上传播的瞬态电流脉冲。对于传播波数的模态方程，采用准横向电磁近似来获得导线上脉冲的时间历程。证实了脉冲幅度衰减和上升时间的衰减与沿导线距离的关系。通过导线将经典的Sommerfeld表达式用于地面上的最小水平电流元素的场积分，以给出频域场。鞍点积分技术产生远离极地角的封闭形式的远场场。数值傅里叶逆变换产生瞬态响应。给出了频域和时域中远区场的代表性结果。

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来源
《Radio Science》 |1989年第2期|224-234|共11页
作者
Donald G. Dudley; Kendall F. Casey;
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作者单位

Department of Electrical and Computer Engineering, University of Arizona, Tucson;

JAYCOR, Fremont, California;

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原文格式 PDF
正文语种 eng
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关键词
Wires; Transient analysis; Earth; Frequency-domain analysis; Dielectric constant; Transforms; History;

机译：导线;瞬态分析;地球;频域分析;介电常数;变换;历史;

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Pulse propagation on a horizontal wire above ground: Far-zone radiated fields

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