基于平面近场的太赫兹天线方向图测量不确定度的评定方法及验证  

Evaluation Method and Verification of Uncertainty in THz Antenna Pattern Measurement Based on Planar Near Field

作　　者：黄承祖 刘星汛 刘婷 许兴明 HUANG Chengzu;LIU Xingxun;LIU Ting;XU Xingming(Beijing Institute of Radio Metrology and Measurement,Beijing 100039,China)

机构地区：[1]北京无线电计量测试研究所,北京100039

出　　处：《宇航计测技术》2024年第5期25-31,共7页Journal of Astronautic Metrology and Measurement

摘　　要：面对太赫兹(Tera Hertz,THz)频段天线方向图校准需求,基于研建的太赫兹天线方向图测量装置,根据NIST经典平面近场测量不确定度分析模型,对天线平面近场测试的测量不确定度进行分析评定,并通过比较法对测量不确定度进行验证。实验结果表明,该评定方法在设定的实验频段可行,预计在更高频段依然适用。首先介绍基于平面近场的太赫兹天线方向图测量装置,然后对测量不确定度的误差来源进行分析,并与远场测量结果进行比较验证,继而对未来工作进行展望。Facing with the demand for Tera Hertz(THz)antenna pattern calibration,analyzes and evaluates the measurement uncertainty of planar near field measurement based on the measurement device of THz antenna pattern and the classic planar near field measurement uncertainty analysis model of NIST.And the measurement uncertainty is verified through comparative method.The experimental results indicate that the evaluation method is feasible in the set frequency band and is expected to remain applicable in higher bands.This paper introduces a THz antenna pattern measurement device based on planar near field first,then analyzes the sources of measurement uncertainty one by one,compares and verifies results through far field measurement.And then looks forwards to the future work.

关 键 词：平面 近场 太赫兹 天线 不确定度 

分 类 号：TB973[一般工业技术—计量学] V443[机械工程—测试计量技术及仪器]