天线口径大小对混波室测试的影响  

Effect of antenna aperture on measurements in reverberation chamber

作　　者：周香[1] 蒋全兴[1] 王文进[1] 

机构地区：[1]东南大学机械工程系,南京210096

出　　处：《东南大学学报（自然科学版）》2005年第4期538-540,共3页Journal of Southeast University：Natural Science Edition

基　　金：国家自然科学基金资助项目(50277007).

摘　　要：为分析非零口径天线的局部平均作用对混波室测试的影响,以统计理论为基础,引入方差函数,从混波室空间相关函数出发,计算出方差函数随间隔长度变化的规律.在实际混波室内x方向移动三坐标场探头,测量不同位置上的电场值,以此来模拟不同口径长度的合成缝隙天线,分析不同口径长度对方差函数和各向异性系数的影响.理论和实验分析结果表明,随着天线口径长度增加,方向函数和各向异性系数减小,局部平均作用增强.The variance function based on statistical theory is introduced to analyze the effect of the antenna aperture on measurement in reverberation chamber. From the spacial correlation function in reverberation chamber, the rule of variance function with the change of interval length is obtained.The synthetic split antenna is simulated by moving the 3-axes E-field probe along the x-direction.The effect of the size of antenna aperture on variance function and anisotropy coefficient is analyzed by using that synthetic split antenna. The theoretical and experimental results indicate that variance function and anisotropy coefficient reduce with the length of antenna aperture.

关 键 词：混波室 局部平均 方差函数 各向异性系数 

分 类 号：TN06[电子电信—物理电子学]