CAJ | 학술논문

场均匀性是混波室的重要指标,但其在校准中会受天线反射的影响.首先计算分析了混波室经验最低使用频率与体积的关系,通过增加体积降低最低使用频率会增加成本;然后介绍了混波室场均匀性校准程序,最后通过实验分析得出,混波室搅拌器搅动会影响发射天线驻波比,由此导致归一化因子不同混波室场强归一化标准偏差不同,甚至会影响混波室最低使用频率.
장균균성시혼파실적중요지표,단기재교준중회수천선반사적영향.수선계산분석료혼파실경험최저사용빈솔여체적적관계,통과증가체적강저최저사용빈솔회증가성본;연후개소료혼파실장균균성교준정서,최후통과실험분석득출,혼파실교반기교동회영향발사천선주파비,유차도치귀일화인자불동혼파실장강귀일화표준편차불동,심지회영향혼파실최저사용빈솔.
Field uniformity is the important property index of reverberation chambers(RC),and its calibration is influenced by antenna reflection.The relation between experiential lowest useable frequency(LUF)of RC and its volume is analyzed.To decrease the LUF,the cost will increase by increasing the volume.Then,the procedure of field uniformity calibration of RC is introduced.At last,it is concluded that the stirring of RC stirrer affects the voltage standing wave ration(VSWR)antenna through experiment,which results in that the normalized standard deviation of field strength varies with the normalizing factor,even that the LUF is influenced.