一腔多模动态扫频法测量生物材料的介电特性

卢智远; 侯建强; 韩日霞; 陈蕊; 牛中奇

doi:10.3969/j.issn.0258-2724.2013.03.012

一腔多模动态扫频法测量生物材料的介电特性

doi: 10.3969/j.issn.0258-2724.2013.03.012

基金项目:

国家自然科学基金资助项目(30470429)

计量
- 文章访问数: 1009
- HTML全文浏览量: 71
- PDF下载量: 413
- 被引次数: 0
出版历程
- 收稿日期: 2012-06-19
- 刊出日期: 2013-06-25

Testing Dielectric Properties of Biological Material by Dynamic Frequency Sweep Method for Multimode Cavity

摘要

摘要: 物质介电特性的无损检测需要多次测量,而每次测量需要重新调试测试系统,这样就使得测量效率降低而成本增加.本研究依据谐振腔微扰法理论,设计了电磁分离的实验测试系统.在该系统中,选取了TE10p(p取奇数)谐振腔谐振模式,采用一腔多模动态扫频法,对多种树木的介电常数和损耗进行了测量计算.该测量方法在同一时间,可以同时测得树木在3个不同频率下的介电常数和损耗特性,极大地减少了单频多次测量过程中调谐腔体尺寸所引起的误差.用该方法对聚四氟乙烯材料的介电常数反复的测量验证,测量误差均小于1％.
- 微扰法 /
- 一腔多模 /
- 动态扫描 /
- 介电特性检测
Abstract: The microwave nondestructive testing on dielectric constant of material needs several times to tune cavity system, which leads to low efficiency and high cost. Based on the cavity perturbation theory, an electromagnetic separation test system was designed, in which the TE10p (p is the odd number) oscillation mode was selected. A dynamic frequency sweep method for multiple oscillation modes in a cavity was proposed to measure the dielectric constant and electromagnetic energy loss for different kinds of trees. This method can simultaneously measure the dielectric constants and loss characteristics at three different frequencies, which greatly reduces the error caused by tuning cavity size in the single-frequency measurements. Repetitive test results on the dielectric constant of the polyltef material with the proposed method have error of lesser than 1％.
- perturbation method /
- multimode cavity /
- dynamic scanning /
- dielectric property test

HTML全文

参考文献(22)

周清一. 微波测量技术[M]. 北京:国防工业出版社,1980: 286.

SHRESTHA B L,WOOD H C, SOKHANSANJ S. Modeling of vegetation permittivity at microwave frequencies[J]. IEEE Transactions on Geoscience and Remote Sensing, 2007, 45(2): 342-348.

任新成,郭立新. 一维带限Weierstrass分形粗糙面透射波散射系数特征研究[J]. 西安电子科技大学学报,2007,34(4): 590-595.REN Xincheng, GUO Lixin. Investigation of characteristics of transmission coefficient from the 1-D band-limited Weierstrass fractal rough surface[J]. Journal of Xidian University, 2007, 34(4): 590-595.

SHI Jiancheng, CHEN K S. Applications of the integral equation model in microwave remote sensing of land surface parameters[C]//IEEE International Geoscience and Remote Sensing Symposium. [S.l.]: IEEE, 2011: 1-4.

SHEEN J. A dielectric resonator method of measuring dielectric properties of low loss materials in the microwave region[J]. Measurement Science and Technology, 2008, 19(3): 473-478.

翟阳文,史小卫,赵永久. 波导横向膜片带通滤波器的全渡分析和精确设计[J]. 西安电子科技大学学报,2007,34(4): 521-525.ZHAI Yangwen, SHI Xiaowei, ZHAO Yongjiu. Full-wave analysis and rigorous design of the waveguide transuerse iris band-pass filter[J]. Journal of Xidian University, 2007, 34(4): 521-525.

SHEEN J. Microwave dielectric properties measurements using the waveguide reflection dielectric resonator[C]//IEEE Instrumentation and Measurement Technology Conference Proceedings. [S.l.]: IEEE, 2007: 1-4.

SHAN Xiaoyong, SHEN Zhongxiang, TSUNO T. Wide-band measurement of complex permittivity using an overmoded circular cavity[J]. Measurement Science and Technology, 2008: 19(2): 025702.1-025702.10.

周云龙. 植物生物学[M]. 2版. 北京:高等教育出版社,2004: 523-525.

方志刚,李处森,孙家言,等. 具有三维连通网络结构的多孔SiC/C材料的电磁损耗特征[J]. 新型炭材料,2010,25(1): 15-21.FANG Zhigang, LI Chusen, SUN Jiayan, et al. The electromagnetic loss characteristics of SiC/C materials with a three-dimensionally connected porous structure[J]. New Carbon Materials, 2010, 25(1): 15-21.

IKEDA M, NISHIDA K, SHIMASAKI H, et al. Influence of the coupling between a cavity and a transmission line on the measurement of complex permittivity by the resonant cavity perturbation method [C]//Microwave Conferenc. Macau: IEEE, 2008: 1-4.

廖承恩. 微波技术基础[M]. 西安:西安电子科技大学出版社,2005: 307-308.

张淑娥,王红云,亢丽娜. 基于微波谐振腔微扰法的汽轮机蒸汽湿度测量[J]. 电力自动化设备,2008,35(2): 29-35.ZHANG Shuer, WANG Hongyun, KANG Lina, et al. Turbine steam wetness measurement based on cavity perturbation method[J]. Electric Power Auto Mation Equipment, 2008, 35(2): 29-35.

COSTA F, AMABILE C, MONORCHIO A, et al. Waveguide dielectric permittivity measurement technique based on resonant FSS filters[J]. IEEE Microwave and Wireless Components Letters, 2011, 21(5): 273-275.

VYAS A D, RANA V A, GADANI D H, et al. Cavity perturbation technique for complex permittivity measurement of dielectric materials at X-band microwave frequency[C]//International Conference on Recent Advances in Microwave Theory and Applications. Jaipur: IEEE, 2008: 836-838.

VERMA A, DUBE D C. Measurement of dielectric parameters of small samples at X-band frequencies by cavity perturbation technique[J]. IEEE Transaction on Instrumentation and Measurement, 2005, 54(5): 2120-2123.

WANG Y,AFSAR M N.Measurement of complex permittivity and permeability of carbonyl iron powders at microwave frequencies[J]. Microwave Optical Technology Letters, 2004, 42(6): 458-459.

LI Daiqing, FREE C E, PITT K E G, et al. A simple method for accurate loss tangent measurement of dielectrics using a microwave resonant cavity[J]. IEEE Microwave and Wireless Components Letters, 2001, 11(3): l18-120.

徐江峰,金永兴,邬良能,等. 理想导体金属谐振腔电磁场微扰理论研究[J]. 微波学报,2004,20(1): 26-29.XU Jangfeng, JIN Yongxing, WU Liangneng, et al. A new perturbation theory of electromagnetic fields in metal cavity[J]. Journal of Microwaves, 2004, 20(1): 26-29.

JIN H, DONG S R, WANG D M. Measurement of dielectric constant of thin film materials at microwave frequencies[J]. Journal of Electromagnetic Waves and Applications, 2009, 23(5/6): 809-817.

ULABY F J, MOORE R K, FUNG A K. Microwave remote sensing: Vol.3[M]. Norwood: Artech House, 1986: 410-430.

WALDRON R A. The theory of waveguides and cavities[M]. New York: Gordon and Breach Science Publisher, 1967: 32-37.

施引文献

附加材料(0)

访问统计

点击查看大图

计量

文章访问数: 1009
HTML全文浏览量: 71
PDF下载量: 413
被引次数: 0

一腔多模动态扫频法测量生物材料的介电特性

doi: 10.3969/j.issn.0258-2724.2013.03.012

计量

出版历程

Testing Dielectric Properties of Biological Material by Dynamic Frequency Sweep Method for Multimode Cavity

计量

出版历程

目录