Measurement Uncertainty of Antenna Efficiency Measured Using the Two-Antenna Method in a Reverberation Chamber

IF 0.6 4区计算机科学 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Applied Computational Electromagnetics Society Journal Pub Date : 2021-01-01 DOI:10.47037/2021.aces.j.36095

Wei Xue, Yuxin Ren, Xiaoming Chen, Zhengpeng Wang, Yingsong Li, Yi Huang

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引用次数: 1

Abstract

─ With decades of development, the reverberation chamber (RC) has been proven to be a popular facility to determine antenna efficiency. One-, twoand threeantenna methods have been proposed to measure antenna efficiency without the need of a reference antenna. Due to the stochastic nature of RCbased measurements, the statistical analysis of the uncertainty is indispensable. Recently, the statistical uncertainty models for the oneand three-antenna methods were derived, however, the statistical model for the two-antenna method is still unknown to date. In this paper, the statistical uncertainty model of the twoantenna method is proposed. The approximated relative uncertainty is also given. The derived statistical uncertainty is verified by both simulations and measurements. It is experimentally verified that the statistical model can cope with hybrid stirring and assess the measurement uncertainty with and without frequency stirring in an efficient and convenient way. Index Terms ─ Antenna efficiency, measurement uncertainty, reverberation chamber, two-antenna method, hybrid stirring.

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混响室内双天线法测量天线效率的测量不确定度

─经过几十年的发展，混响室(RC)已被证明是一种常用的确定天线效率的设备。在不需要参考天线的情况下，提出了一天线、二天线和三天线测量天线效率的方法。由于rcs测量的随机性，不确定性的统计分析是必不可少的。近年来，人们推导出了单天线和三天线方法的统计不确定性模型，而双天线方法的统计不确定性模型至今仍然未知。本文提出了双天线法的统计不确定性模型。给出了近似的相对不确定度。通过仿真和实测验证了所得的统计不确定性。实验证明，该统计模型能有效、方便地处理混合搅拌，并能有效地评定有无频率搅拌的测量不确定度。指标项─天线效率、测量不确定度、混响室、双天线法、混合搅拌。

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来源期刊

Applied Computational Electromagnetics Society Journal 工程技术-电信学

CiteScore

1.60

自引率

28.60%

发文量

审稿时长

9 months

期刊介绍： The ACES Journal is devoted to the exchange of information in computational electromagnetics, to the advancement of the state of the art, and to the promotion of related technical activities. A primary objective of the information exchange is the elimination of the need to "re-invent the wheel" to solve a previously solved computational problem in electrical engineering, physics, or related fields of study. The ACES Journal welcomes original, previously unpublished papers, relating to applied computational electromagnetics. All papers are refereed. A unique feature of ACES Journal is the publication of unsuccessful efforts in applied computational electromagnetics. Publication of such material provides a means to discuss problem areas in electromagnetic modeling. Manuscripts representing an unsuccessful application or negative result in computational electromagnetics is considered for publication only if a reasonable expectation of success (and a reasonable effort) are reflected. The technical activities promoted by this publication include code validation, performance analysis, and input/output standardization; code or technique optimization and error minimization; innovations in solution technique or in data input/output; identification of new applications for electromagnetics modeling codes and techniques; integration of computational electromagnetics techniques with new computer architectures; and correlation of computational parameters with physical mechanisms.