Nonlinear Sheath Admittance, Currents, and Charges Associated With High Peak Voltage Drive on a VLF/ELF Dipole Antenna Moving in the Ionosphere
Nonlinear Sheath Admittance, Currents, and Charges Associated With High Peak Voltage Drive on a VLF/ELF Dipole Antenna Moving in the Ionosphere
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与在电离层中移动的 VLF/ELF 偶极天线上的高峰值电压驱动相关的非线性护套导纳、电流和电荷
DOI：
10.1029/rs007i004p00503
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发表时间：
1972
期刊：
影响因子：
1.6
通讯作者：
I. Shkarofsky
中科院分区：
文献类型：
--
作者：
I. Shkarofsky
我们考虑一个由甚低频源驱动且沉浸在电离层中的由两个线元组成的裸天线。包含了与高达1000伏的高电压以及一个附加的感应$v×B·1$电压相关的非线性效应。所施加的电压被视为一种直流效应。对于各种瞬时电压值，我们得到了沿天线的电压、电阻电流、鞘层大小以及单位长度电荷的分布。在馈电点，假设施加余弦电压形式，给出了电荷以及电阻电流和位移电流的波形。对一个周期求平均，作为峰值偏置电压的函数，得到了从介质中收集粒子所耗散的平均功率、在两个半天线之间移动电荷所做的平均功，以及平均鞘层电导和电容。给出了三个高度和两种天线长度的数值结果。
We consider a bare antenna consisting of two line elements driven by a VLF source and immersed in the ionosphere. Nonlinear effects associated with high voltages up to 1000 volts and with an additional induced v×B·1 voltage are included. The applied voltage is visualized as a dc effect. For various instantaneous voltage values, we obtain the distribution along the antenna of voltage and resis'ive current, sheath size, and charge per unit length. At the feed points, waveforms for the charge and both resistive and displacement currents are illustrated, assuming an applied cosine voltage form. Averaging over a cycle yields, as a function of peak bias voltage, the average power dissipated in collection of particles from the medium, the average work done in moving charge between the two half-antennas, and the average sheath conductance and capacitance. Numerical results are given for three altitudes and two antenna lengths.