Site attenuation calculation of ferrite chamber
Site attenuation calculation of ferrite chamber
复制标题
铁氧体暗室现场衰减计算
DOI：
10.1109/isemc.1994.385626
复制
发表时间：
1994
期刊：
影响因子：
--
通讯作者：
S. Takeya
中科院分区：
文献类型：
--
作者：
K. Shimada;S. Takeya
在前一篇论文中，作者用一根大的方形同轴线在低于100 MHz的频率下测量了射频（RF）吸收体的S参数值，并对结果进行了评价[S。Takeya，K.“用大方形同轴线测量射频吸收体特性的新方法”，1993年IEEE国际电磁兼容研讨会]。本文用大同轴线的结果模拟了铁氧体暗室的现场衰减，并与实测结果进行了比较。当使用小同轴线（直径39 mm）的测量结果时，计算结果的精度不高。因此，他们采用了用大同轴电缆进行测量获得的结果，这些结果代表了铁氧体瓦片之间的间隙的影响，并确认了模拟精度的提高。这使得能够对根据铁氧体瓦片的间隙尺寸而变化的位置衰减进行数值分析，即，RF吸收体的制造和放置条件的差异。然后，作者能够将此分析应用于铁氧体腔室的设计。<<ETX>>
In a previous paper the authors measured the values of S parameter of radio-frequency (RF) absorbers, using a large square coaxial line at frequencies below 100 MHz and evaluated the results [S. Takeya, K. Shimada "New measurement of RF absorber characteristics by large square coaxial line", 1993 IEEE International Symposium on EMC]. The present authors used the results obtained from the large coaxial line to simulate the site attenuation of a ferrite chamber and compared the simulation results with actually measured results. When the measurement results of a small coaxial line (39 mm diameter) were used, the accuracy of the calculation results was not high. Therefore, they adopted the results obtained from measurements made with the large coax, which represent the effects of gaps between ferrite tiles, and confirmed the improvement of simulation accuracy. This enabled to numerically analyze the site attenuation which varied depending on the sizes of gaps of the ferrite tiles, i.e., the difference in fabrication and placement conditions of RF absorbers. The authors were then able to apply this analysis to the design of ferrite chambers.<<ETX>>