| 电介质测量中的谐振腔Q因子特性 |
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| 引用本文： | 倪尔瑚,罗萍,李涤徽.电介质测量中的谐振腔Q因子特性[J].空间科学学报,2009,29(1):73-77. |
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| 作者姓名： | 倪尔瑚 罗萍 李涤徽 |
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| 作者单位： | 1.浙江大学材料与化学工程学院, 杭州310027 |
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| 摘 要： | 对同轴线-集中电容负载谐振腔, 采用传输测量使用的3dB 三频法决定有载Ql, 计及谐振频率下的插入损耗后获得无载Qu, 对同一腔体, 也用单端口反射测量技术的xdB 三频法, 并通过测量回程损耗在谐振点和xdB 点的输入反射系数振幅来获得无载Qu. 在500MHz 下40 个不同的耦合状况下, 两种方法得到无载Qu的算术平均值和标准差为2519±34. 这两种技术被用来调节和实现传输型谐振腔的输入、输出的等耦合和电介质测量, 本文从介质损耗测量的观点讨论了如何使用有载Ql和无载Qu.
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| 关 键 词： | 谐振腔 Q因子测量 电介质测量 |
| 收稿时间： | 1900-01-01 |
Characterization of the Q-factor of Resonator for Dielectric Measurements |
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| NI Erhu,LUO Ping,LI Dihui.Characterization of the Q-factor of Resonator for Dielectric Measurements[J].Chinese Journal of Space Science,2009,29(1):73-77. |
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| Authors: | NI Erhu LUO Ping LI Dihui |
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| Institution: | College of Materials Science and Chemical Engineering;Zhejiang University;Hangzhou 310027;Department of Electronic Science;Huizhou University;Center for Space Science and Applied Research;Chinese Academy of Sciences |
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| Abstract: | The transmission-type measurement of the Q-factor of a reentrant cavity is used to determine unloaded Q_u from the measured loaded Q_l by the 3 dB three frequencies method together with insertion loss at the maximum output.Also,the one-port reflection technique is used to determine unloaded Q_u from the resonant frequency and the bandwidth measured at the x dB point, as well as the magnitudes of the input reflection coefficient measured at both resonant frequency and x dB return loss for the same reentrant ... |
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| Keywords: | Cavity resonator Q-factor measurement Dielectric measurement |
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