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Proceedings of Conference on Precision Electromagnetic Measurements Digest最新文献

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Construction of CCC resistance ratio bridge CCC电阻比桥的施工
Proceedings of Conference on Precision Electromagnetic Measurements Digest Pub Date : 1994-06-27 DOI: 10.1109/CPEM.1994.333255
Z. Hu, D. H. Jensen, J. Holtoug
{"title":"Construction of CCC resistance ratio bridge","authors":"Z. Hu, D. H. Jensen, J. Holtoug","doi":"10.1109/CPEM.1994.333255","DOIUrl":"https://doi.org/10.1109/CPEM.1994.333255","url":null,"abstract":"The paper introduces the cryogenic current comparator (CCC) resistance ratio bridge being built at DFM, which is designed to relate the value of quantized Hall resistance R/sub H/(i) to room temperature resistance standards. The CCC is an overlapping tube type with copper wire. A double constant current source is used to supply for the CCC resistance ratio bridge.<<ETX>>","PeriodicalId":388647,"journal":{"name":"Proceedings of Conference on Precision Electromagnetic Measurements Digest","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115521359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design and performance evaluation of the NIST digital impedance bridge NIST数字阻抗桥的设计与性能评估
Proceedings of Conference on Precision Electromagnetic Measurements Digest Pub Date : 1994-06-27 DOI: 10.1109/CPEM.1994.333190
B. Waltrip, N. Oldham
{"title":"Design and performance evaluation of the NIST digital impedance bridge","authors":"B. Waltrip, N. Oldham","doi":"10.1109/CPEM.1994.333190","DOIUrl":"https://doi.org/10.1109/CPEM.1994.333190","url":null,"abstract":"An impedance bridge that compares two-terminal standard inductors to characterized resistors is described. A dual-channel digitally synthesized source and sampling digital multimeter are used to generate and measure relevant bridge signals. A linear interpolation algorithm is used to autocalibrate the bridge to a 1 nF air-dielectric capacitor. An intercomparison of the new bridge with existing measurement standards in the low audio frequency range for inductors 1 mH to 10 H is reported.<<ETX>>","PeriodicalId":388647,"journal":{"name":"Proceedings of Conference on Precision Electromagnetic Measurements Digest","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115620157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A new millisecond pulsar observation system at CRL 一个新的毫秒脉冲星观测系统
Proceedings of Conference on Precision Electromagnetic Measurements Digest Pub Date : 1994-06-27 DOI: 10.1109/CPEM.1994.333172
Y. Hanado, M. Imae, M. Sekido
{"title":"A new millisecond pulsar observation system at CRL","authors":"Y. Hanado, M. Imae, M. Sekido","doi":"10.1109/CPEM.1994.333172","DOIUrl":"https://doi.org/10.1109/CPEM.1994.333172","url":null,"abstract":"The Communications Research Laboratory (CRL) has developed an unique system using an acousto-optic spectrometer for precise timing measurements for millisecond pulsars. This system can treat a signal of 50 MHz bandwidth, have a frequency resolution of 200 kHz and a time resolution of 13 /spl mu/s, and average 2/sup 24/ pulses without dead time.<<ETX>>","PeriodicalId":388647,"journal":{"name":"Proceedings of Conference on Precision Electromagnetic Measurements Digest","volume":"256 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115869203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Evaluation of techniques for bonding wires to quantized Hall resistors 量化霍尔电阻器粘接导线技术的评价
Proceedings of Conference on Precision Electromagnetic Measurements Digest Pub Date : 1994-06-27 DOI: 10.1109/CPEM.1994.333279
Kyong-Ho Lee
{"title":"Evaluation of techniques for bonding wires to quantized Hall resistors","authors":"Kyong-Ho Lee","doi":"10.1109/CPEM.1994.333279","DOIUrl":"https://doi.org/10.1109/CPEM.1994.333279","url":null,"abstract":"Three different techniques for mounting quantized Hall resistors with AuGe/Ni alloyed contacts were evaluated. The best quality and most robust samples were made by evaporating bonding pads that overlapped the alloyed contacts and the substrate, so that bonds could be made over the substrate rather than over the heterostructure.<<ETX>>","PeriodicalId":388647,"journal":{"name":"Proceedings of Conference on Precision Electromagnetic Measurements Digest","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124374135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Active probes for on-wafer millimeter-wave network analysis 用于片上毫米波网络分析的有源探头
Proceedings of Conference on Precision Electromagnetic Measurements Digest Pub Date : 1994-06-27 DOI: 10.1109/CPEM.1994.333314
M. Rodwell, R. Yu, P. Reddy, S. Allen, U. Bhattacharya
{"title":"Active probes for on-wafer millimeter-wave network analysis","authors":"M. Rodwell, R. Yu, P. Reddy, S. Allen, U. Bhattacharya","doi":"10.1109/CPEM.1994.333314","DOIUrl":"https://doi.org/10.1109/CPEM.1994.333314","url":null,"abstract":"Emerging mm-wave and high-speed fiber-optic applications will demand signal and network instrumentation with bandwidths beyond 1O0 GHz. We have developed nonlinear transmission line (NLTL) pulse generators and NLTL-based sampling circuits with bandwidths exceeding 500 GHz. For on-wafer parameter and waveform measurements, we have constructed active probes incorporating an NLTL-based network analyser IC and rugged, low-loss quartz coplanar-waveguide probe tips. Measurements are made with a pulsed (NLTL) stimulus signal with frequency information obtained by Fourier transformation. On-wafer measurements have been demonstrated to 200 GHz.<<ETX>>","PeriodicalId":388647,"journal":{"name":"Proceedings of Conference on Precision Electromagnetic Measurements Digest","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114901503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
The accurate measurement of a micromechanical force using force-sensitive capacitances 使用力敏感电容对微机械力的精确测量
Proceedings of Conference on Precision Electromagnetic Measurements Digest Pub Date : 1994-06-27 DOI: 10.1109/CPEM.1994.333271
M. R. Wolffenbuttel, P. Regtien
{"title":"The accurate measurement of a micromechanical force using force-sensitive capacitances","authors":"M. R. Wolffenbuttel, P. Regtien","doi":"10.1109/CPEM.1994.333271","DOIUrl":"https://doi.org/10.1109/CPEM.1994.333271","url":null,"abstract":"A sensor for the precise and accurate measurement of micro-mechanical forces is presented. The sensor is used to detect a tactile image and has capacitive force sensing elements which are detected by charge readout. The mechanical performance of the force sensor is evaluated and verified with experiments. The force-to-deflection and deflection measurements have been separated in order to result in a sensor structure in which the response is linear with force and little affected by fringe fields. The sensor is 0.25 mm/sup 2/ in size, it has a force range of 0.25 mN and a capacitance of 2 pF. The amplifier detects capacitance changes of 15 fF with a maximum non-linearity of 0.01% over the 1.25-2.5 pF range.<<ETX>>","PeriodicalId":388647,"journal":{"name":"Proceedings of Conference on Precision Electromagnetic Measurements Digest","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121911368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
A thin-film dual heater ac-dc converter with infrared sensor 一种带红外传感器的薄膜双加热器ac-dc变换器
Proceedings of Conference on Precision Electromagnetic Measurements Digest Pub Date : 1994-06-27 DOI: 10.1109/CPEM.1994.333331
F.L. Katzmann, M. Klonz
{"title":"A thin-film dual heater ac-dc converter with infrared sensor","authors":"F.L. Katzmann, M. Klonz","doi":"10.1109/CPEM.1994.333331","DOIUrl":"https://doi.org/10.1109/CPEM.1994.333331","url":null,"abstract":"A dual heater isothermal converter for precise ac-dc transfer is realized by using thin-film heaters on a thin sandwich membrane, and by sensing their temperature with an infrared pyrometer. This reduces diversion of heat from the heaters, the thermal time-constant and the ac-dc transfer differences due to thermoelectric effects, shunt capacitances and dielectric losses.<<ETX>>","PeriodicalId":388647,"journal":{"name":"Proceedings of Conference on Precision Electromagnetic Measurements Digest","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124662141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
The performance and reliability of NIST 10-V Josephson arrays NIST 10-V约瑟夫森阵列的性能和可靠性
Proceedings of Conference on Precision Electromagnetic Measurements Digest Pub Date : 1994-06-27 DOI: 10.1109/CPEM.1994.333434
C. Hamilton, C. Burroughs
{"title":"The performance and reliability of NIST 10-V Josephson arrays","authors":"C. Hamilton, C. Burroughs","doi":"10.1109/CPEM.1994.333434","DOIUrl":"https://doi.org/10.1109/CPEM.1994.333434","url":null,"abstract":"This paper reviews eight years of fabrication of 10-V Josephson array chips at NIST and the performance and reliability of these chips at 22 different standards laboratories. Failure mechanisms and statistical data on failure rates are presented for devices made with both Nb/Nb/sub 2/O/sub 5//Pb and Nb/Al/sub 2/O/sub 3//Nb junctions.<<ETX>>","PeriodicalId":388647,"journal":{"name":"Proceedings of Conference on Precision Electromagnetic Measurements Digest","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124858352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
Broadband frequency measurement in the near infrared using point contact Schottky diode 利用点接触肖特基二极管进行近红外宽带频率测量
Proceedings of Conference on Precision Electromagnetic Measurements Digest Pub Date : 1994-06-27 DOI: 10.1109/CPEM.1994.333384
O. Acef, G. Rovera, F. Nez
{"title":"Broadband frequency measurement in the near infrared using point contact Schottky diode","authors":"O. Acef, G. Rovera, F. Nez","doi":"10.1109/CPEM.1994.333384","DOIUrl":"https://doi.org/10.1109/CPEM.1994.333384","url":null,"abstract":"Results obtained from high order harmonic mixing between infrared lasers and microwave radiation in point contact Schottky diodes are reported.<<ETX>>","PeriodicalId":388647,"journal":{"name":"Proceedings of Conference on Precision Electromagnetic Measurements Digest","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128732231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cryogenic hydrogen maser 低温氢脉泽
Proceedings of Conference on Precision Electromagnetic Measurements Digest Pub Date : 1994-06-27 DOI: 10.1109/CPEM.1994.333229
R. Mossavati, J. Gallop, C. F. Wall
{"title":"Cryogenic hydrogen maser","authors":"R. Mossavati, J. Gallop, C. F. Wall","doi":"10.1109/CPEM.1994.333229","DOIUrl":"https://doi.org/10.1109/CPEM.1994.333229","url":null,"abstract":"We have begun to develop a prototype cold hydrogen maser (CHM). The main features of this CHM, which is designed to operate in the pulsed mode at 4.2 K, is the use of low loss alumina for the fabrication of the microwave cavity in order to reduce the overall size. A numerical simulation was performed to find the dimensions of the microwave cavity required for the TE/sub 011/ mode to be at 1.420 GHz, and the model has been confirmed experimentally. The CHM is intended to be used as a flywheel frequency standard at the NPL with medium-term stability of one part in 10/sup 16/ or better.<<ETX>>","PeriodicalId":388647,"journal":{"name":"Proceedings of Conference on Precision Electromagnetic Measurements Digest","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129947698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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