| 基于减小谐振腔样品孔的旋磁铁氧体高介电常数测试 |
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| 引用本文： | 罗建成,黄蓉.基于减小谐振腔样品孔的旋磁铁氧体高介电常数测试[J].磁性材料及器件,2019,50(1):57-60. |
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| 作者姓名： | 罗建成 黄蓉 |
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| 作者单位： | 西南应用磁学研究所,四川绵阳,621000;西南应用磁学研究所,四川绵阳,621000 |
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| 摘 要： | 改进了GB/T9633-2012《微波频率应用的旋磁材料性能测量方法》的测试方法,讨论了减小测试腔的样品插入孔对材料介电常数的影响,采用旋磁铁氧体和陶瓷材料作为测试样本。测试系统沿用谐振通过式,计算模式采用电磁微扰理论。测试结果证明,随着样品尺寸的减小,介电常数相比GB/T9633-2012测试方法的精度有一定的提高,更加接近材料的真实值。
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| 关 键 词： | 旋磁铁氧体材料 谐振腔微扰法 介电常数 介电损耗 |
Testing on the microvawe ferrite with high dielectric constant based on the cavity with reduced sample-hole |
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| LUO Jian-cheng,HUANG Rong.Testing on the microvawe ferrite with high dielectric constant based on the cavity with reduced sample-hole[J].Journal of Magnetic Materials and Devices,2019,50(1):57-60. |
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| Authors: | LUO Jian-cheng HUANG Rong |
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| Affiliation: | (Southwest Institute of Applied Magnetics,Mianyang 621000,China) |
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| Abstract: | In this paper,the test method of GB/T9633-2012 Measuring method-for properties of gyromagnetic materials properties intend for application at microwave frequencies was improved by cut down the sample-hole size of the resonance cavity,and the influence of the sample hole size of the chamber on the dielectric constant testing discussed,for which ferrite and ceramic materials were chosen as samples.The test system uses the resonance cavity perturbation method for passing mode,the calculation uses the electromagnetic field perturbation theory.The test results show that with the decrease of the sample size,the dielectric constant value is improved as compared with the GB/T9633-2012 test method,and is closer to the true value of the material. |
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| Keywords: | gyromagnetic ferrite material resonance cavity perturbation method dielectric constant dielectric loss |
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