基于腔模理论的圆盘传感器性能研究

发布时间：2018-04-23 04:04

本文选题：特高频传感器 + 局部放电　；参考：《高电压技术》2016年04期

【摘要】：为了研究影响圆盘型UHF传感器性能的因素,本文基于腔模理论,采用XFdtd软件仿真研究了圆盘电极直径、介质基片厚度、介质基片介电常数、同轴馈源位置对传感器性能的影响;建立了基于GTEM小室的等效FDTD模型,采用频域有效高度对不同馈源位置的圆盘型UHF传感器的性能进行了评价。结果表明:圆盘电极直径、介质基片厚度和介质基片介电常数的增加会使传感器的频带向频率减小的方向移动;馈源位置对传感器谐振模式的影响明显,馈源位于ρ=a/4处的传感器较馈源位于ρ=0处的传感器,在300~800 MHz频段上的平均有效高度提高了约127%。
[Abstract]:In order to study the factors that affect the performance of disk UHF sensor, the effects of the diameter of disk electrode, the thickness of dielectric substrate, the dielectric constant of dielectric substrate and the position of coaxial feed on the performance of the sensor are simulated by XFdtd software based on the theory of cavity mode. An equivalent FDTD model based on GTEM cell is established. The performance of disk UHF sensor with different feed positions is evaluated by using effective height in frequency domain. The results show that the increase of the diameter of the disk electrode, the thickness of the dielectric substrate and the dielectric constant of the dielectric substrate will make the frequency band of the sensor move towards the direction of decreasing frequency, and the influence of the feed position on the resonant mode of the sensor is obvious. The average effective height of the sensor at 蟻 ~ (a / 4) is about 127% higher than that at 蟻 ~ (0) at 300 ~ 800 MHz band.
【作者单位】：华北电力大学高电压与电磁兼容北京市重点实验室;华北电力大学新能源电力系统国家重点实验室;中国电力科学研究院;
【基金】：国家重点基础研究发展计划(973计划)(2011CB209405)~~
【分类号】：TP212

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