INTERCOMPARISON OF PERMITTIVITY MEASUREMENTS USING THE TRANSMISSION/REFLECTION METHOD IN 7-MM COAXIAL TRANSMISSION-LINES
INTERCOMPARISON OF PERMITTIVITY MEASUREMENTS USING THE TRANSMISSION/REFLECTION METHOD IN 7-MM COAXIAL TRANSMISSION-LINES
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DOI：
10.1109/22.330120
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发表时间：
1994-11-01
影响因子：
4.3
通讯作者：
JANEZIC, MD
中科院分区：
文献类型：
--
作者：
VANZURA, EJ;BAKERJARVIS, JR;JANEZIC, MD
宽带介电常数测量的11个组织使用的传输/反射（T/R）的方法进行了比较，高精度空腔谐振器的结果。当ε“（r）< 15时，T/R精度小于10%，最小可测损耗因子ε”（r）约为0.05。由试样与内外导体之间的气隙引起的不确定度是总体不确定度的最大贡献者。与其他尺寸测量方法相比，对试样内径和外径的物理测量可产生最准确的间隙修正。
Broadband permittivity measurements made by eleven organizations using the transmission/reflection (T/R) method are compared to high-accuracy cavity resonator results. T/R accuracy is less than 10% for epsilon'(r) < 15, and the smallest measureable loss factor is epsilon''(r) approximate to 0.05. Uncertainty caused by the air gaps between the specimen and the inner and outer conductors is the largest contributor to the overall uncertainty. Compared to other dimensional measurement methods, physical measurement of specimen bore and outer diameters yield the most accurate gap corrections.