Millimeter wave measurements of temperature dependence of complex permittivity of GaAs plates by a circular waveguide method
Millimeter wave measurements of temperature dependence of complex permittivity of GaAs plates by a circular waveguide method
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通过圆形波导法测量 GaAs 板复介电常数的温度依赖性的毫米波
DOI：
10.1109/mwsym.2001.967351
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
Y. Kobayashi
中科院分区：
文献类型：
--
作者：
T. Shimizu;Y. Kobayashi
对圆波导法进行了改进，利用高阶整数m的TE/sub 0 m1/模在毫米波范围内精确测量低损耗介质板的复介电常数。测量原理的基础上描述了严格的分析模式匹配技术。给出的模态图能有效地识别测量中观察到的多种共振模态。GaAs板的温度依赖性测量在26 GHz的TE/sub 011/模式和TE/sub 021/模式在40 GHz。实验证明，该方法可用于精确测量材料的温度特性。此外，它有望能够评估GaAs晶体的晶格缺陷的数量。
A circular waveguide method is improved to measure the complex permittivity of low loss dielectric plates using the TE/sub 0m1/ mode with integer m of the higher order accurately in the millimeter wave range. The measurement principle is described on the basis of a rigorous analysis by the mode matching technique. A mode chart presented is effective to identify many resonance modes observed in the measurement. The temperature dependences for GaAs plates were measured at 26 GHz for the TE/sub 011/ mode and at 40 GHz for the TE/sub 021/ mode. It is verified that this method is useful to measure the temperature dependence precisely. Moreover it is expected to be able to evaluate the quantity of lattice defects of GaAs crystal.