电阻阵列加载单锥TEM室研究  

Research for the Resistively Loaded Monocone TEM Cell

作　　者：蒋廷勇 王晓嘉 周恒 张守龙 JIANG Ting-yong;WANG Xiao-jia;ZHOU Heng;ZHANG Shou-long(Northwest Institute of Nuclear Technology,Xi'an,Shaanxi 710069,China)

机构地区：[1]西北核技术研究院,陕西西安710069

出　　处：《计量学报》2022年第11期1501-1505,共5页Acta Metrologica Sinica

基　　金：国家十四五军事计量项目。

摘　　要：提出一种新型基于电阻阵列加载的低反射、宽频带单锥TEM室,其利用无感电阻阵列吸收了单锥末端低频反射,克服了传统单锥TEM室因有限长度导致的时间窗问题,使加载后单锥TEM室标准场产生装置工作频带下限拓展至DC附近。实验结果表明,加载后单锥TEM室在DC~1 GHz频域范围内S_(11)均小于-17 dB,突破了原有1.5 m单锥TEM室在时域校准应用中的时间窗限制。提出的加载技术不仅将现有标准装置应用范围拓展至脉宽20 ns以上核电磁脉冲甚至更宽脉冲标准场领域,也可推广至频域用于常规天线带宽和增益等参数测试,从而拓宽了传统单锥TEM室在传感器校准领域的应用范围。A novel resistively loaded monocone with wide bandwidth and low reflectivity was proposed in this paper.To solve the time window caused by limited length,eight non-inductance resistors networks were applied for the distributed impedance end-loading.Reflections occurred from either the end of cone or the edge of the ground plane was reduced significantly and the operational frequency band-width was widen effectively after loading,especially for the low frequency.The result shows that the measured maximum S_(11)is less than-17 dB from DC to 1 GHz for the resistively loaded monocone with length of 1.5 m,which broken the time window constraints caused by limited cone length and greatly extended the application for pulse E-field calibration.Correspondingly,the calibration range of measuring system is pushed from ultra-short pulse limited by time window to NEMP with more than 20 ns pulse width,as well as for the gain and bandwidth measurement of regular antenna.

关 键 词：计量学 单锥TEM室 电阻加载 短电磁脉冲 时间窗 

分 类 号：TB973[一般工业技术—计量学]