电磁混响室场均匀性评定方法的实验研究  

Experiment on the Field Uniformity Validation Methods of Reverberation Chamber

作　　者：郭晓涛[1] 何昭[1] 王少华[1] 王立峰[1] GUO Xiao-tao HE Zhao WANG Shao-hua WANG Li-feng(National Institute of Metrology, Beijing 100029, China)

机构地区：[1]中国计量科学研究院,北京100029

出　　处：《北京邮电大学学报》2017年第4期86-90,共5页Journal of Beijing University of Posts and Telecommunications

基　　金：国家科技支撑计划项目(2014BAK02B00)之课题四(2014BAK02B04)及课题五(2014BAK02B00);国家计量基标准资源共享平台项目(27-APT1401-7)

摘　　要：采用两种不同的方法对同一新建电磁混响室的场均匀性进行了评定、对比和分析,一种是基于最大场强统计特性,具有优于相关国际标准的技术指标;另一种方法是基于不同搅拌状态下被测场强的概率分布,将任意搅拌状态下的被测场强均纳入场均匀性判定过程中.两种评定方法所得结果具有一致性和差异性,一致性证明了新方法能够从场强概率分布的角度对混响室的场均匀性进行有效验证;差异性则说明了新方法可以为射频识别芯片最大识别距离测试、复杂信道模拟等应用提供更为全面和准确的基础技术指标支撑.The field uniformity of the same reverberation chamber is validated by the traditional method which is based on maximal field,and its results indicate that the technical specification of reverberation chamber is much better than that required in related international standard. A new method based on the probability distribution of field is introduced here. The field during the whole period of stirrers＇ rotating is taken into account. The general accordance from these two methods indicates that the new method is useful for the validation from another new point of view. The partial difference proves that the new method should be adopted for better specification supporting in some special applying,such as maximum reading distance measurement for radio frequency identification and simulation of complex wireless channel.

关 键 词：电磁混响室 场均匀性 概率分布 

分 类 号：O451[理学—无线电物理]