| 一种用于GIS超高频检测的滤波器 |
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| 引用本文： | 张晓星,唐炬,孙才新,魏钢.一种用于GIS超高频检测的滤波器[J].高电压技术,2005,31(8):27-29,53. |
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| 作者姓名： | 张晓星 唐炬 孙才新 魏钢 |
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| 作者单位： | 重庆大学高电压与电工新技术教育部重点实验室,重庆400030;重庆电力公司重庆电力超高压局,重庆400030 |
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| 基金项目： | 国家自然科学基金资助项目（50377045） |
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| 摘 要： | 为提高使用外置天线的GIS超高频检测系统的信噪比,设计了一种工作频带300~1000MHz的微带线带通滤波器。根据微带线滤波器设计原理,确定滤波器类型、结构和级数,利用先进的EDA仿真工具进行结构仿真和优化并提出了一种减小滤波器尺寸的方法。特性曲线和实测性能表明,该滤波放大器能抑制低频干扰信号,放大局放信号,提高信噪比,从而满足了UHF微弱信号滤波预处理要求。
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| 关 键 词： | 微带线 带通滤波器 GIS 超高频监测 |
| 文章编号： | 1003-6520（2005）08-0027-03 |
| 收稿时间： | 2005-03-08 |
| 修稿时间： | 2005-03-08 |
Bandpass Filter Used for PD UFH Detecting in GIS |
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| Zhang Xiaoxing,TANG Ju,Sun Caixin,WAI Gang.Bandpass Filter Used for PD UFH Detecting in GIS[J].High Voltage Engineering,2005,31(8):27-29,53. |
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| Authors: | Zhang Xiaoxing TANG Ju Sun Caixin WAI Gang |
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| Affiliation: | ZHANG Xiaoxing1, TANG Ju1, SUN Caixin1, WAI Gang2(1. The Key Laboratory of High Voltage Engineering and Electrical New Technology, Ministry of Education, Chongqing University, Chongqing 400044, China; 2. Chongqing Extra-high Voltage Bureau, Chongqing 400044, China) |
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| Abstract: | In order to improve the SNR of UFH PD detecting system using outer antenna in GIS, this paper designs a microstrip bandpass filter, whose work frequency band is 300~1 000 MHz. According to the microstrip filter design principle, the type, structure and optional series can be determined, then the structure simulation and optimization of filter are designed by using advanced EDA simulation tool, and a method of miniaturized microstrip filter is put forward. The results of performance test show that, it can suppress the low frequency noise, enlarge the PD signal and improve the SNR, so it can meet the pretreatment demand of UHF feeble PD signals. |
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| Keywords: | microstrip line bandpass filter GIS UFH detecting |
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