针—板电极电晕放电辐射电磁波的等效模型

Equivalent Model of Electromagnetic Wave Radiated from Corona Discharge between Needle-Plate Electrodes in Loop Circuit

报告了环形回路中针—板电极电晕放电辐射电磁波的极化方式、方向图的实验结果。实验结果表明 ,根据环形回路长度对应的频率 ,在较低的频率范围内 ,其辐射可用一个短振子和一个小环的组合来等效 ,而在较高的频率范围内 。

This paper reports experiment results of both polarization pattern and orientation diagram of electromagnetic wave radiated from corona discharge between needle plate electrodes in a loop circuit. Experiment results show that its radiation model can be simulated by combination of a short dipole and a small loop antenna in relatively lower frequency range, and combination of a short dipole and a medium loop antenna in relatively higher frequency range. The frequency corresponds with length of the loop circuit, respectively.