应用于局放检测的宽带小型化蝶形天线设计  

Design of wideband miniaturized butterfly antenna for partial discharge detection

作　　者：贺俊铫 李相强[1] 张健穹[1] 王庆峰[1] HE Junyao;LI Xiangqiang;ZHANG Jianqiong;WANG Qingfeng(Faculty of Physical Science and Technology,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]西南交通大学物理科学与技术学院,四川成都610031

出　　处：《电子元件与材料》2022年第5期520-525,共6页Electronic Components And Materials

基　　金：四川省科技厅重点研发项目(22ZDYF3070);中央高校基本科研业务费资助项目(2682021GF016)。

摘　　要：为提高局放检测的灵敏度和实用性,提出了一种装载矩形反射腔的宽频带小型化蝶形天线。采用渐变式宽带巴伦进行阻抗变换,通过弯曲蝶形天线臂的沿线和开缝加载电阻等技术增加等效电长度,有效地拓宽了工作频带。借助电磁仿真软件对天线进行了设计,并进行实物制作和测试。结果表明,仿真结果与实测结果基本符合,天线平面尺寸为200 mm×100 mm,在300~1800 MHz的驻波比≤2,相对带宽为142.8%,最大增益可达3.7 dBi,具备高增益、宽频带和小型化的性能特点。In order to improve the sensitivity and applicability of partial discharge detection,a wideband miniaturized butterfly antenna loaded with a rectangular reflector was proposed.The tapered broadband balun was used for the impedance conversion,and the equivalent electrical length was increased by bending the butterfly antenna arm line and the slit loaded resistance.As a result,the working frequency bandwidth of the antenna was effectively improved.The antenna was designed with electromagnetic simulation software,and it was produced and tested.The results show that the simulation results are basically consistent with the measurement results.The antenna plane size is 200 mm×100 mm,the standing wave ratio at 300-1800 MHz is less than 2,the relative bandwidth is 142.8%,and the maximum gain can reach 3.7 dBi.The designed antenna demonstrates high gain,wide frequency band and miniaturization.

关 键 词：局放放电检测 灵敏度 蝶形天线 宽频带 小型化 

分 类 号：TN98[电子电信—信息与通信工程]