用两种微波腔测量介质片的介电常数

2010 International Conference on Anti-Counterfeiting, Security and Identification Pub Date : 2010-07-18 DOI:10.1109/ICASID.2010.5551830

L. Yao, Zurong Ni, Tongzan Liu], Fen Xiao

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引用次数: 3

摘要

推导了TE109模矩形腔和TE011模圆柱腔中介电常数的计算公式。采用基于标量网络分析仪的测试系统，分别通过上述两个空腔对同一片介质进行了测试。开发了基于LABVIEW的测试软件。结果表明，摄动法在矩形腔中的测量误差小于3.8%，重复性误差小于1.1%，而在圆柱腔中的测量误差分别为0.4%和0.3%。采用微扰法在圆柱腔中实现了介质片介电常数的自动测量。

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Measuring permittivity of the dielectric sheet by two kinds of microwave cavities

The formulas were derived for the calculation of the permittivity of dielectric measured in TE109 mode rectangular cavity and TE011 mode cylindrical cavity. A testing system based on scalar network analyzer was adopted to measure the same sheet dielectric by the two cavities above respectively. The testing software based on LABVIEW was developed. The results showed that the measuring error was less than 3.8% and repeatability error was than 1.1% by perturbation method in rectangular cavity, while those are 0.4% and 0.3%, by using cylindrical cavity. The automatic measurement of permittivity of dielectric sheet can be achieved by perturbation method in cylindrical cavity.

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2010 International Conference on Anti-Counterfeiting, Security and Identification

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