摘要
为获得埋墙式探测传感器漏泄同轴电缆(漏缆)电气特性,设计一种新型外导体为开槽结构的耦合型漏缆。利用电磁仿真软件HFSS构建辐射波耦合物理模型,分析辐射性参数随工作频率、槽口角度和间距改变时的变化规律,并优化数值。计算结果表明,工作频率为150MHz,槽口宽度介于内导体圆周长1/4~1/3,即开槽角δ=125°、槽口间距为100mm、漏缆间隔为150mm时,前后瓣抑制比与前瓣发散角同时达到最大;通过对拐角处槽口间距封装,使其间距为200mm时,前瓣增益与全辐射角同时达到最大。该结果为室内安防漏缆设计提供了理论依据,具有重要的工程应用价值。
In order to obtain the electrical characteristics of a leaky coaxial cable(hereinafter referred to as leaky cable)as a buriedwall detection sensor,a new type of coupling leaky cable with a slotted outer conductor is designed.The electromagnetic simulation software HFSS is used to construct a radiated wave coupling physical model,and the change law of radiant parameters with the change of operating frequency,slot angle and spacing is analyzed,and numerical optimization is performed.The calculation results show that the working frequency is 150MHz,the slot width is between 1/4-1/3 of the inner conductor circumference,that is,the slot angle δ=125°,the slot spacing is 100mm,and the leaky cable spacing is 150mm.When the front and rear lobe suppression ratio and the front lobe divergence angle reach the maximum at the same time,the front lobe gain and the full radiation angle reach the maximum at the same time when the gap between the notches at the corner is packaged to 200mm.This result provides a theoretical basis for the design of leak-proof cables suitable for indoor security and has important engineering application value.
作者
韩臣
袁明辉
王文勇
HAN Chen;YUAN Ming-hui;WANG Wen-yong(School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)
出处
《软件导刊》
2021年第6期173-178,共6页
Software Guide
基金
国家自然科学基金项目(61601291)。
关键词
漏泄同轴电缆
分布式传感器
辐射特性
数值优化
leaky coaxial cable
distributed sensor
radiation characteristics
numerical optimization
