双锥天线在开阔场中测试校准及分析  

Calibration and A nalysis of Biconical Antennas in Open Fileds

作　　者：芮大勇 姜传飞 RUI Da-yong;JIANG Chuan-fei(The 723rd Research Institute of China State Shipbuilding Corporation,Yangzhou 225009)

机构地区：[1]中国船舶集团有限公司第七二三研究院,扬州225009

出　　处：《环境技术》2024年第5期194-199,223,共7页Environmental Technology

摘　　要：本文基于CISPR标准规定辐射发射与接收测试应在开阔试验场(OATS)上进行的要求,利用双天线法对双锥天线进行校准,同时根据结果可以确认在天线校准的测试中,所得系数曲线是会受到地面反射的影响。这也就可以合理的解释在所测算的系数曲线中,在某些特定的频点处会出现尖峰或者凹陷,这主要是由于地面的反射,导致接收天线所接受到的信号相位与幅值发生改变造成的。我们创新的利用矢量网络分析仪中含有的时域门技术,即通过对测试天线在时域上的测量,对所测量到的信号,将其他杂波信号或者多次反射信号进行滤除,使得矢量网络分析仪上只显示直达信号(最大幅值分量的信号),对测量结果进行修正,为天线开阔场校准提供了一种新的修正方法,为整体测量结果的评定提供参考。Based on the requirement of CISPR standard for the radiation emission and receiving test(OATs),the dual antenna method is used to calibrate the double cone antenna,and it is confirmed that the coefficient curve is affected by the ground reflection in the test of antenna calibration.This can reasonably explain that in the calculated coefficient curve,there will be sharp peaks or depressions at some specific frequency points,which is mainly due to the reflection of the ground,resulting in the phase and amplitude of the signal received by the receiving antenna.Our innovative use of vector network analyzer contains the time domain gate technology,that is,through the measurement of the test antenna in the time domain,the measured signal,other clutter signal or multiple reflection signal filter,make the vector network analyzer only display direct signal(maximum amplitude component signal),correct the measurement results,provides a new correction method for antenna open field calibration,provide reference for the evaluation of the overall measurement results..

关 键 词：开阔场 校准 双锥天线 

分 类 号：TB973[一般工业技术—计量学]