电波科学学报2011，Vol.26Issue(6)：1212-1217,6.
宽带超高频局放检测壳装天线设计方法研究
A design of the UHF antenna with metallic shell for PD detection
郭宏福 1付咪 1许彩祥1
作者信息
- 1. 西安电子科技大学理学院,陕西西安710071
- 折叠
摘要
Abstract
The broad-band UHF antenna used for Partial discharge（PD）detection needs to be fitted in the metallic shell in order to shield from the external radio interference,which makes the antenna characters change,leading to the fact that the antenna broadband character can not meet the requirements of the PD signal measurement.This paper presents a novel approach to improve the Voltage standing wave ratio（VSWR） by adding absorbing materials in the shell,and simulates the characters of the antenna by Ansoft HFSS.Moreover,the influence of different absorbing material dimensions on the antenna characters is analyzed.A PD detection broad-band UHF antenna with metallic shell is designed and experimentally tested.The analysis results show that the antenna directivity is changed and the antenna gain is enhanced,and the VSWR deteriorates with the metallic shell.By adding the absorbing material in the metallic shell to achieve better VSWR,the impedance bandwidth of the proposed antenna meets the requirements of the PD signal measurement broadband characters.This novel approach provides theoretical and practical guidance and reference for the design of actual PD UHF antenna关键词
UHF/宽带天线/局放检测/金属腔/驻波比Key words
UHF/broad-band antenna/PD detection/metallic shell/VSWR分类
信息技术与安全科学引用本文复制引用
郭宏福,付咪,许彩祥..宽带超高频局放检测壳装天线设计方法研究[J].电波科学学报,2011,26(6):1212-1217,6.
