Standards and Measurements of Microwave Surface Impedance, Skin Depth, Conductivity and Q
Standards and Measurements of Microwave Surface Impedance, Skin Depth, Conductivity and Q
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微波表面阻抗、趋肤深度、电导率和 Q 值的标准和测量
DOI：
10.1109/ire-i.1960.5006910
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发表时间：
1960
期刊：
影响因子：
--
通讯作者：
H. Bussey
中科院分区：
文献类型：
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作者：
H. Bussey
172 IRE 交易工具 9 月 onator 可能是最方便观察的。当波导中的复传播常数也存在过渡层时，这些参数被理解为表观值。可以使用。通过这些技术进行表面损耗测量。自从微波进入空腔特性以来，壁阻抗对谐振特性的影响就可以通过常用的扰动来获得。表面损失通过艾里森理论进行了调查。当本森和冯·拜尔最近提出时，该空腔被认为是平静的。 2 电导率无穷大，因此 Z* 为零。复合表面阻抗的影响一直受到速度有限电导率的关注，然后被视为光测量的扰动 3 和磁研究。 4 谐振器的复频率，*，定义 本文讨论的谐振腔方法为cw*= w+ jf/2Q。 Z8 的 w* 测定的实验测量。主要重点是可以产生Z*。（确定绝对损耗标准的复传播常数，即在传输线上可以进行类似处理。）应用标准化复金属中非磁性贝特空腔微扰方程的ZB实部。其他材料的损耗可快速形成，并分离为实部和虚部，相对于本标准确定；此外，这样会产生如下的频移和Q，所得到的标准可以用作从空腔壁阻抗求复数的基础。渗透率测定。
172 IRE TRANSACTIONS ON INSTRUMENTATION September onator is probably the most convenient observable. tions are understood to be apparent values when a The complex propagation constant in a waveguide also transition layer is present. may be used. Surface loss measurements by these tech- The influence of the wall impedance on the resonance niques have been made since microwaves came into properties of a cavity may be obtained by perturbation common use. Surface losses were surveyed by Allison theory. The cavity is regarded as unperturbed when the and Benson,'and recently by von Baeyer. 2 The com-conductivity is infinite so that Z* is zero. The effect of plex surface impedance has been of interest in velocity finite conductivity is then regarded as a perturbation of light measurements, 3 and in magnetic research. 4 of the complex frequency of the resonator,*, defined This paper discusses resonant cavity methods for the as cw*= w+ jf/2Q. Experimental measurements of w* determination of Z8. The main emphasis has been on can yield Z*.(The complex propagation constant of a the determination of an absolute loss standard, ie, on transmission line may be similarly treated.) Application standardizing the realpart of ZB for a nonmagnetic of Bethe's' cavity perturbation equation in complex metal. The losses of other materials may be quicklyform, and separation intoreal and imaginary parts, determined relative to this standard; in addition, such a yields a frequency shift and a Q as follows, resulting standard may be used as a basis for making complex fromthe cavity wall impedance. permeability determinations.