王宜颖,周成贵,曾昭锋,等.手臂电磁通道特征研究[J].电波科学学报,2023,38(1):103-107.DOI:10.12265/j.cjors.2022014WANGYY,ZHOUCG,ZENGZF,etal.Investigationofelectromagneticchannelcharacteristicsforhumanarm[J].Chinesejournalofradioscience,2023,38(1):103-107.(inChinese).DOI:10.12265/j.cjors.2022014手臂电磁通道特征研究王宜颖周成贵曾昭锋范友康潘旺华*(桂林电子科技大学,桂林541004)摘要依据现有研究结果和未来体域网发展趋势研究了手臂电磁通道特征.将两个同样工作在5.8GHz、尺寸为4cm×4cm的全织物贴片天线作为收发两端,研究竖直状态下手臂的传输特征;再依据自然行走状态,模拟前摆最大值位置、自然下垂和后摆最大值位置手臂的动态过程.通过对天线在空气和手臂不同位置上传输特征的对比分析,确定表面波对传输特征的影响,并采用曲线拟合方法获得相对路径损耗预测模型;通过对比手臂三种自然状态的实测结果,建立路径损耗的预测模型.研究表明,对自然下垂状态下的预测模型进行简单的修正即可较好地预测前摆和后摆时的路径损耗.关键词体域网;电波传播;贴片天线;手臂电磁通道特征;曲线拟合中图分类号TN011文献标志码A文章编号1005-0388(2023)01-0103-05DOI10.12265/j.cjors.2022014InvestigationofelectromagneticchannelcharacteristicsforhumanarmWANGYiyingZHOUChengguiZENGZhaofengFANYoukangPANWanghua*(GuilinUniversityofElectronicandTechnology,Guilin541004,China)AbstractDependingonthepresentresearchesandthetrendoffuturebodyareanetwork(BAN),thispaperinvestigatestheelectromagneticchannelcharacteristicsforhumanarm.Twosameall-fabricpatchantennas,workingat5.8GHzandwiththesizeof4cm×4cm,aretakenasthetransmittedandreceivedantennastostudythetransmissioncharacteristicsintheuprightsituation.Andthreeclassicpositionsarechosentomimictheactivityofarmintheprocessofnaturalwalk,theyarethemaximumpositionoffrontswing,naturalsagging,andmaximumforthebackswing.Fromthecomparisonsofdifferentpositionsbetweenthemeasuredresultsintheairandthoseofonarm,theinfluenceofsurfacewaveisdetermined,anditspredictivemodelisderivedfortherelativepathlossbymeansofmathematicalfittingmethod.Thecorrespondingpathlossmodelsarealsobuiltfortheabovenaturalpositions.The...