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Theory and design of waveform purer 波形净化器的原理与设计
CPEM 2010 Pub Date : 2010-08-09 DOI: 10.1109/CPEM.2010.5543260
S. Li, Z. Li, Z. Zhang
{"title":"Theory and design of waveform purer","authors":"S. Li, Z. Li, Z. Zhang","doi":"10.1109/CPEM.2010.5543260","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5543260","url":null,"abstract":"To reduce harmonics in the AC voltage signal, a precise bound-pass RC filter named ‘waveform purer’ is designed with a double-T network in the negative feedback loop. This filter keeps fundamental frequency unvaried, in both phase and amplitude, but greatly reducing harmonics. Related principles are discussed, including the ‘bridge balance principle’ of double-T network and the ‘three time constants principle’. Experiment result shows that output of waveform purer has a very high precision, with an uncertainty about parts of 10<sup>−8</sup> V.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121438177","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
Magnetic field enhanced robustness of quantized current plateaus in single and double quantum dot non-adiabatic single charge pumps 磁场增强单、双量子点非绝热单电荷泵中量子化电流平台的鲁棒性
CPEM 2010 Pub Date : 2010-06-13 DOI: 10.1109/CPEM.2010.5544459
P. Mirovsky, C. Leicht, B. Kaestner, Vyacheslavs Kashcheyevs, K. Pierz, H. Schumacher
{"title":"Magnetic field enhanced robustness of quantized current plateaus in single and double quantum dot non-adiabatic single charge pumps","authors":"P. Mirovsky, C. Leicht, B. Kaestner, Vyacheslavs Kashcheyevs, K. Pierz, H. Schumacher","doi":"10.1109/CPEM.2010.5544459","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5544459","url":null,"abstract":"We compare the robustness of the quantized current plateaus of semiconductor non-adiabatic quantized charge pumps consisting of a single quantum dot (SQD) and two QDs connected in series (DQD). For the SQD application of a perpendicular magnetic field leads to an enhanced robustness of the first current plateau I = ef, with f the pumping frequency and e the elementary charge. In contrast for the DQD a comparably enhanced robustness of the plateau I = 2ef is found. These findings might allow generation of higher currents without compromising quantization accuracy by optimizing the device geometry.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115152990","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: 3
Planar reactive near-field scanning system at KRISS KRISS平面反应性近场扫描系统
CPEM 2010 Pub Date : 2010-06-13 DOI: 10.1109/CPEM.2010.5543200
Dong-Joon Lee, N. Kang, J. Kwon, Joo-Gwang Lee, Jin-Seob Kang
{"title":"Planar reactive near-field scanning system at KRISS","authors":"Dong-Joon Lee, N. Kang, J. Kwon, Joo-Gwang Lee, Jin-Seob Kang","doi":"10.1109/CPEM.2010.5543200","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5543200","url":null,"abstract":"A photonic-assisted reactive near-field scanner for planar antennas is presented. We, KRISS (Korea Research Institute of Standards and Science), have recently developed electro-optic sensors as all-dielectric electric field probes and utilized them for field imaging of antenna patterns. The performance of our system, as well as calibration of the system drift, are introduced by exploring 4 × 4 patch antenna arrays at the K-band.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121808954","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: 1
Time-domain three antenna method for biconical antenna 双锥天线时域三天线法
CPEM 2010 Pub Date : 2010-06-13 DOI: 10.1109/CPEM.2010.5543197
S. Kurokawa, M. Ameya, M. Hirose
{"title":"Time-domain three antenna method for biconical antenna","authors":"S. Kurokawa, M. Ameya, M. Hirose","doi":"10.1109/CPEM.2010.5543197","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5543197","url":null,"abstract":"We apply our proposed method [1] for evaluating the free-space antenna factor of a Biconical antenna. The method is based on the techniques of a time domain analysis and a pulse compression technique. The method enables us to isolate the direct wave from the reflected waves on the ground plane in an open area test site, and to evaluate the free-space antenna factor of a Biconical antenna.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120934646","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: 9
Generation of new time scale at ROB: Combination of cesium clocks and hydrogen masers 新一代的时间尺度在罗布:铯钟和氢脉泽的组合
CPEM 2010 Pub Date : 2010-06-13 DOI: 10.1109/CPEM.2010.5544355
S. Sharma, P. Defraigne
{"title":"Generation of new time scale at ROB: Combination of cesium clocks and hydrogen masers","authors":"S. Sharma, P. Defraigne","doi":"10.1109/CPEM.2010.5544355","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5544355","url":null,"abstract":"The tuning of the master clock frequency at ROB, is performed using a daily monitoring based on GNSS geodetic time transfer with different UTC(k)'s located in remote time laboratories. To enhance the independence of the ROB, a time scale algorithm is under process, using the ensemble of cesium clocks and H masers data. Equal clock weighting has been replaced by time-varying noise characteristics of the two different types of clocks. Correction of frequency drift is required by the masers. This paper will present the algorithm and the different tests performed in order to increase its robustness and reliability.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"2016 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121339416","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
Selective amplification of optical frequency comb using anti-reflect coated laser 用抗反射涂层激光器选择性放大光频梳
CPEM 2010 Pub Date : 2010-06-13 DOI: 10.1109/CPEM.2010.5544313
E. B. Kim, C. Y. Park, S. E. Park
{"title":"Selective amplification of optical frequency comb using anti-reflect coated laser","authors":"E. B. Kim, C. Y. Park, S. E. Park","doi":"10.1109/CPEM.2010.5544313","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5544313","url":null,"abstract":"We report the selective amplification of a phase-stabilized optical frequency comb (OFC) by using an anti-reflect (AR) coated diode laser. We achieved the amplification factor of 10 dB around 852-nm wavelength with a bandwidth of 1.5 nm when the injected power of OFC is 1 mW. We investigated the effect of a spectral band-pass filter on the amplification of an OFC. As a practical application of the amplified comb, remote absolute frequency measurement of the cesium D2 line by transfer of amplified OFC through an optical fiber network was demonstrated.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124957592","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
Minimizing voltage lead corrections for a pulse-driven josephson voltage standard 最小电压引线校正脉冲驱动约瑟夫森电压标准
CPEM 2010 Pub Date : 2010-06-13 DOI: 10.1109/CPEM.2010.5544558
H. E. van den Brom, E. Houtzager
{"title":"Minimizing voltage lead corrections for a pulse-driven josephson voltage standard","authors":"H. E. van den Brom, E. Houtzager","doi":"10.1109/CPEM.2010.5544558","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5544558","url":null,"abstract":"This paper describes possible strategies towards minimizing or compensating the influence of the voltage leads when using a pulse driven AC Josephson voltage standard as a calculable reference source in practice.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123327628","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: 8
Bayesian estimation of interharmonic and fluctuating harmonic parameters from digital sampling data 基于数字采样数据的间谐波和波动谐波参数的贝叶斯估计
CPEM 2010 Pub Date : 2010-06-13 DOI: 10.1109/CPEM.2010.5545062
G. Kyriazis
{"title":"Bayesian estimation of interharmonic and fluctuating harmonic parameters from digital sampling data","authors":"G. Kyriazis","doi":"10.1109/CPEM.2010.5545062","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5545062","url":null,"abstract":"Bayesian spectrum analysis using approximations based on the normal distribution and the posterior mode is used here for estimating accurately the parameters of interharmonics and fluctuating harmonics from digital sampling data.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126727911","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: 1
Density comparison of isotopically enriched silicon single crystals by the pressure-of-flotation method 用压力浮选法比较同位素富集硅单晶的密度
CPEM 2010 Pub Date : 2010-06-13 DOI: 10.1109/CPEM.2010.5543621
A. Waseda, K. Fujii
{"title":"Density comparison of isotopically enriched silicon single crystals by the pressure-of-flotation method","authors":"A. Waseda, K. Fujii","doi":"10.1109/CPEM.2010.5543621","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5543621","url":null,"abstract":"An isotopically enriched silicon crystal is recently available for a new determination of the Avogadro constant. Density comparison measurement is presented for enriched <sup>28</sup>Si crystals by the pressure-of-flotation (PF) method. Relative density difference for <sup>28</sup>Si spheres Avo28-S5 and Avo28-S8 is evaluated to be (2.6±0.9)×10<sup>−8</sup>.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116744406","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
Reconstruction of the cooling setup of the Josephson voltage standard system in CMI CMI中约瑟夫森电压标准系统冷却装置的重建
CPEM 2010 Pub Date : 2010-06-13 DOI: 10.1109/CPEM.2010.5543465
M. Sira, J. Streit, M. Schubert, M. Starkloff, G. Wende
{"title":"Reconstruction of the cooling setup of the Josephson voltage standard system in CMI","authors":"M. Sira, J. Streit, M. Schubert, M. Starkloff, G. Wende","doi":"10.1109/CPEM.2010.5543465","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5543465","url":null,"abstract":"This paper describes the experiences and operational parameters of the Josephson voltage system cooled by closed cycle refrigerator produced by HYPRES, INC., USA and operated in CZECH METROLOGY INSTITUTE. The change of the cooling system was required and the new cooling system was implemented by SUPRACON AG. The overall increase in operational parameters of the system was observed.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117296037","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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