对于开放式校准标准，可以有负偏移和电容吗？

这里是第一篇描述在开放式波导中终止的开放同轴线的论文之一的链接。
我甚至不假装完全理解数学。
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1126893和下载引文：Risley，E.W。;
，“在圆形波导中终止的同轴线的不连续电容”，微波理论与技术，IEEE Transactions，vol.17，no.2，pp.86-92，Feb 1969 doi：10.1109 / TMTT.1969.1126893摘要：这
计算使用Rayleigh-Ritz变分技术评估在圆形波导中终止的同轴线的不连续电容。
制造具有实心中心导体的50欧姆3/4英寸同轴线端子，其中心和外导体尺寸分别为0.32568±0.00002和0.74995±0.00002英寸。
与2.177093×10-13法拉的计算值相比，该终端在1000Hz下的电容测量值为2.164×10-13法拉。
还将其他线尺寸的计算电容值与测量值进行比较，并且在每种情况下，计算值与测量值一致，在测量值的实验误差内。
关键词：{导纳;电容测量;同轴元件;导体;制造;频率;氦;磁场;尺寸测量;波导不连续;} URL：http：//ieeexplore.ieee.org/stamp/stamp.jsp？tp =＆amp;
; arnumber = 1126893＆安培; ISNUMBER = 24942



     以下为原文

  here is a link to one of the first papers describing an open coaxial line terminated in an open waveguide.  I don't even pretend to fully understand the math.

http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1126893

And the download citation:
Risley, E.W.; , "Discontinuity Capacitance of a Coaxial Line Terminated in a Circular Waveguide," Microwave Theory and Techniques, IEEE Transactions on , vol.17, no.2, pp. 86- 92, Feb 1969
doi: 10.1109/TMTT.1969.1126893
Abstract: This calculation evaluates the discontinuity capacitance of a coaxial line terminated in a circular waveguide using the Rayleigh-Ritz variational technique. A 50-ohm 3/4-inch coaxial line termination with solid center conductor was fabricated with center and outer conductor dimensions of 0.32568± 0.00002 and 0.74995± 0.00002 inches, respectively. The measured value of capacitance of this termination at 1000 Hz was 2.164 x 10-13 farads as compared with the calculated value of 2.177093 x 10-13 farads. Calculated values of capacitance for other line sizes were also compared with measured values and in each case the calculated value agreed with the measured value to within the experimental error of the measured value.
keywords: {Admittance;Capacitance measurement;Coaxial components;Conductors;Fabrication;Frequency;Helium;Magnetic fields;Size measurement;Waveguide discontinuities;}
URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1126893&isnumber=24942

> {quote：title = Dr_joel写道：} {quote}>这里是第一篇描述在开放波导中终止的开放同轴线的论文之一的链接。
我甚至不假装完全理解数学。
>> http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1126893谢谢乔尔。
>和下载引文：> Risley，E.W。;
，“在圆形波导中终止的同轴线的不连续电容”，微波理论与技术，IEEE Transactions，vol.17，no.2，pp.86-92，1969年2月> doi：10.1109 / TMTT.1969.1126893 I'
我很惊讶这篇论文超越了同行评审过程。
没有描述如何测量这么小的电容。
在1 kHz，这似乎不是一个简单的练习。
据说理论和测量之间的差异在测量的不确定性范围内，但没有说明不确定性是什么。
没有描述如何测量同轴线的尺寸以及它们如何保持在+/- 0.00002“。如果它发表在数学期刊上，我会不会感到惊讶，数学家只会假设可以测量这样的电容，没有
问题。似乎有很多数学（远远超出我的能力），但缺乏实验细节。也许期刊的编辑找不到能够理解数学的工程师，所以它是由数学家审查的。也许我是
过度批评，它只是暴露了我的无知。无论如何，谢谢你的参考。戴夫



     以下为原文

  > {quote:title=Dr_joel wrote:}{quote}
> here is a link to one of the first papers describing an open coaxial line terminated in an open waveguide.  I don't even pretend to fully understand the math.
> 
> http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1126893

Thank you Joel. 

> And the download citation:
> Risley, E.W.; , "Discontinuity Capacitance of a Coaxial Line Terminated in a Circular Waveguide," Microwave Theory and Techniques, IEEE Transactions on , vol.17, no.2, pp. 86- 92, Feb 1969
> doi: 10.1109/TMTT.1969.1126893

I'm quite surprised that paper got  past the peer review process. 

There's no description of how such a small capacitance was measured. At 1 kHz that seems no trivial exercise. The difference between theory and measurement are said to be within the uncertainty of the measurements, but no statement of what the uncertainty is. There's no description of how the coaxial line dimensions was measured and how they kept to +/- 0.00002". 

I would have been less surprised if it was published in a maths journal, where mathematicians would just assume that one can measure such capacitances, without question. 

There seems to be plenty of maths (well beyond my abilities), but a lack of experimental details. 

Perhaps the journal's editor could not find an engineer able to understand the maths, so it was reviewed by a mathematician. 

Perhaps I'm being over-critical, and it just exposes my ignorance. 

Anyway, thank you for the reference. 

Dave

> {quote：title = Dr_joel写道：} {quote}>这里是第一篇描述在开放波导中终止的开放同轴线的论文之一的链接。
我甚至不假装完全理解数学。
>> http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1126893>>下载引文：> Risley，E.W。;
，“在圆形波导中终止的同轴线的不连续电容”，微波理论与技术，IEEE Transactions，vol.17，no.2，pp.86-92，Feb 1969> doi：10.1109 / TMTT.1969.1126893> Abstract
：该计算使用Rayleigh-Ritz变分技术评估在圆形波导中终止的同轴线的不连续电容。
制造具有实心中心导体的50欧姆3/4英寸同轴线端子，其中心和外导体尺寸分别为0.32568±0.00002和0.74995±0.00002英寸。
与2.177093×10-13法拉的计算值相比，该终端在1000Hz下的电容测量值为2.164×10-13法拉。
还将其他线尺寸的计算电容值与测量值进行比较，并且在每种情况下，计算值与测量值一致，在测量值的实验误差内。
>关键字：{导纳;电容测量;同轴元件;导体;制造;频率;氦;磁场;尺寸测量;波导不连续;}> URL：http：//ieeexplore.ieee.org/stamp/stamp.jsp？tp
=＆amp; arnumber = 1126893＆amp; isnumber = 24942以下是1934年贝尔系统技术期刊中的Shelkunoff文章提到的贝塞尔函数：[http://www.alcatel-lucent.com/bstj/vol13-1934/articles/bstj13-4
-532.pdf]这个提到Shelkunoff（但后来的文章）并且有很多参考文献，但链接需要登录到princeton：[http://www.physics.princeton.edu/~mcdonald/examples/coax_rad.pdf
]以及更多关于生物医学/无损检测的开放式同轴探针：http：//www.eeel.nist.gov/advanced_materials_publications/Baker-Jarvis%20IM%2094.pdf] [http://www.dtic]
.mil / dtic / tr / fulltext / u2 / a218147.pdf] Spacecase



     以下为原文

  > {quote:title=Dr_joel wrote:}{quote}
> here is a link to one of the first papers describing an open coaxial line terminated in an open waveguide.  I don't even pretend to fully understand the math.
> 
> http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1126893
> 
> And the download citation:
> Risley, E.W.; , "Discontinuity Capacitance of a Coaxial Line Terminated in a Circular Waveguide," Microwave Theory and Techniques, IEEE Transactions on , vol.17, no.2, pp. 86- 92, Feb 1969
> doi: 10.1109/TMTT.1969.1126893
> Abstract: This calculation evaluates the discontinuity capacitance of a coaxial line terminated in a circular waveguide using the Rayleigh-Ritz variational technique. A 50-ohm 3/4-inch coaxial line termination with solid center conductor was fabricated with center and outer conductor dimensions of 0.32568± 0.00002 and 0.74995± 0.00002 inches, respectively. The measured value of capacitance of this termination at 1000 Hz was 2.164 x 10-13 farads as compared with the calculated value of 2.177093 x 10-13 farads. Calculated values of capacitance for other line sizes were also compared with measured values and in each case the calculated value agreed with the measured value to within the experimental error of the measured value.
> keywords: {Admittance;Capacitance measurement;Coaxial components;Conductors;Fabrication;Frequency;Helium;Magnetic fields;Size measurement;Waveguide discontinuities;}
> URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1126893&isnumber=24942

Here's the Shelkunoff article in Bell System Technical Journal from 1934 that mentions bessel functions: [http://www.alcatel-lucent.com/bstj/vol13-1934/articles/bstj13-4-532.pdf]

This one mentions Shelkunoff (but a later article) and has lot's of references but the links require a login to princeton: [http://www.physics.princeton.edu/~mcdonald/examples/coax_rad.pdf]

And a couple more on open ended coaxial probes for Bio-medical/NDT:

[http://www.eeel.nist.gov/advanced_materials_publications/Baker-Jarvis%20IM%2094.pdf]
[http://www.dtic.mil/dtic/tr/fulltext/u2/a218147.pdf]

Spacecase

要迁移，sourceId：105932



     以下为原文

  to be migrated, sourceId: 105932