Proceedings of the 2004 IEEE International Frequency Control Symposium and Exposition, 2004.最新文献_第10页

Bridged micromechanical filters 桥接微机械过滤器

Proceedings of the 2004 IEEE International Frequency Control Symposium and Exposition, 2004. Pub Date : 2004-08-23 DOI: 10.1109/FREQ.2004.1418465

Sheng-Shian Li, M. Demirci, Yu-Wei Lin, Z. Ren, C. Nguyen

引用次数: 36

A new technique for estimating frequency from GPS carrier-phase time transfer data 一种利用GPS载波相位时传输数据估计频率的新技术

Proceedings of the 2004 IEEE International Frequency Control Symposium and Exposition, 2004. Pub Date : 2004-08-23 DOI: 10.1109/FREQ.2004.1418477

C. Hackman, J. Levine, T. Parker, Dirk Piester, H. Becker

引用次数: 8

SAW sensors using orthogonal frequency coding SAW传感器采用正交频率编码

Proceedings of the 2004 IEEE International Frequency Control Symposium and Exposition, 2004. Pub Date : 2004-08-23 DOI: 10.1109/FREQ.2004.1418470

D. Puccio, D. Malocha, D. Gallagher, J. Hines

引用次数: 56

SAW sensor for liquid chromatography using 2-port resonator 使用2端口谐振器的液相色谱SAW传感器

Proceedings of the 2004 IEEE International Frequency Control Symposium and Exposition, 2004. Pub Date : 2004-08-23 DOI: 10.1109/FREQ.2004.1418514

T. Nomura, A. Saitoh, S. Furukawa

引用次数: 2

Vibration modes analysis by X-ray topography in quartz and langasite resonators 石英和langasite谐振腔的x射线形貌振动模式分析

Proceedings of the 2004 IEEE International Frequency Control Symposium and Exposition, 2004. Pub Date : 2004-08-23 DOI: 10.1109/FREQ.2004.1418524

J. Mateescu, B. Capelle, J. Détaint, G. Johnson, L. Dumitrache, C. Bran

{"title":"Vibration modes analysis by X-ray topography in quartz and langasite resonators","authors":"J. Mateescu, B. Capelle, J. Détaint, G. Johnson, L. Dumitrache, C. Bran","doi":"10.1109/FREQ.2004.1418524","DOIUrl":"https://doi.org/10.1109/FREQ.2004.1418524","url":null,"abstract":"This paper presents the results of the vibration modes measurements by X-ray topography in SC-cut quartz and Y-cut unpolished langasite resonators. A comparison of these results with X-ray diffraction topography images on AT-cut quartz resonators and Y-cut polished langasite resonators pointed out the behavior of mass-loading effect with plate orientation angle and with the surface state of the piezoelectric substrate. The results are compared with electrical measurements performed on the same resonators. 5 MHz Sawyer, plan parallel SC-cut quartz and Y-cut unpolished langasite resonators, with 14 mm plate diameter and various electrode thickness and diameters have been investigated on fundamental, third and fifth overtones. The study on SC-cut quartz resonators and unpolished Y-cut langasite resonators pointed out a good agreement with the results obtained on the same resonators by electrical measurements. The conclusion is that the SC-cut quartz resonator characteristics present a similarly harmonic dependence with those of the Y-cut langasite resonators thus revealing the stress-compensated feature of the Y-cut in langasite crystal.","PeriodicalId":369162,"journal":{"name":"Proceedings of the 2004 IEEE International Frequency Control Symposium and Exposition, 2004.","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121442465","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

Frequency-locked loop between a H-maser and a Cs clock 在h脉泽和c钟之间的锁频环

Proceedings of the 2004 IEEE International Frequency Control Symposium and Exposition, 2004. Pub Date : 2004-08-23 DOI: 10.1109/FREQ.2004.1418548

J. Saalaoui, M. Addouche, F. Lardet-Vieudrin, E. Rubiola, V. Giordano, F. Vernotte

{"title":"Frequency-locked loop between a H-maser and a Cs clock","authors":"J. Saalaoui, M. Addouche, F. Lardet-Vieudrin, E. Rubiola, V. Giordano, F. Vernotte","doi":"10.1109/FREQ.2004.1418548","DOIUrl":"https://doi.org/10.1109/FREQ.2004.1418548","url":null,"abstract":"The time and frequency reference in Besancon is based on caesium clocks for absolute accuracy and long-term stability, on a H-maser for medium and long term stability, and on a liquid-He whispering gallery sapphire oscillator for best spectral purity and short-term stability. These standards are located in three different places. In order to obtain the full accuracy and stability at least in one site, we combine these references using a frequency locked loop. The traditional method consists of locking a VCO to a reference. The short-term stability of the VCO and the long term performance of the reference are therefore combined in the output signal, when the cut-off frequency of the control is properly chosen. Yet, in our case we have to lock the VCO to two references, the H-maser in the medium term and the Cs clock in the long term. The control system consists of two mixers that compare the references to a quartz oscillator (VCO), and of a recursive digital filter. The H-maser and the Cs clock are not controlled. This paper analyzes the method for choosing a suitable control algorithm, and presents the results based on simulated data.","PeriodicalId":369162,"journal":{"name":"Proceedings of the 2004 IEEE International Frequency Control Symposium and Exposition, 2004.","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115842687","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

On influence of an electrode edge potential upon frequencies of LFE piezoelectric resonators employing thickness-shear vibrations 电极边缘电位对厚度-剪切振动LFE压电谐振器频率的影响

Proceedings of the 2004 IEEE International Frequency Control Symposium and Exposition, 2004. Pub Date : 2004-08-23 DOI: 10.1109/FREQ.2004.1418525

S. Nedorezov, O. Shmaliy, Y. Shmaliy

引用次数: 0

Piezoelectricity in poled silica films achieved using super-lattice structure with tetravalent metal dopants 采用四价金属掺杂的超晶格结构实现了极化二氧化硅薄膜的压电性

Proceedings of the 2004 IEEE International Frequency Control Symposium and Exposition, 2004. Pub Date : 2004-08-23 DOI: 10.1109/FREQ.2004.1418535

S. Noge, M. Shiroishi, T. Uno

{"title":"Piezoelectricity in poled silica films achieved using super-lattice structure with tetravalent metal dopants","authors":"S. Noge, M. Shiroishi, T. Uno","doi":"10.1109/FREQ.2004.1418535","DOIUrl":"https://doi.org/10.1109/FREQ.2004.1418535","url":null,"abstract":"We previously reported piezoelectricity in thin films of poled silica glass doped with germanium (Ge:SiO/sub 2/). Similarly, tetravalent-metal-doped SiO/sub 2/ (M/sup 4+/:SiO/sub 2/) films were prepared on Si substrates by RF magnetron sputtering for this experiment. We used germanium, titanium, and tin as the doping materials. We compared the piezoelectricity of the films with the piezoelectricity of quartz. Piezoelectricity with the same order of magnitude as that in quartz was observed in the M/sup 4+/:SiO/sub 2/ films. However, less than a week later, the piezoelectricity disappeared almost completely in all the samples. To prevent this in the poled M/sup 4+/:SiO/sub 2/ films, we have tried to pin the displacement of the doping ions with a poling treatment. We have developed a pinning technique based on the structure of a Ge:SiO/sub 2/-Ti:SiO/sub 2/-Sn:SiO/sub 2/ super-lattice. This super-lattice structure was very effective in preventing the piezoelectricity from disappearing. It is known that an anomalous photovoltaic effect only exists in materials with spontaneous polarization. In the M/sup +4/:SiO/sub 2/ super-lattice film, an anomalous photovoltaic phenomenon could clearly be observed. Therefore, the poled super-lattice silica film was piezoelectric.","PeriodicalId":369162,"journal":{"name":"Proceedings of the 2004 IEEE International Frequency Control Symposium and Exposition, 2004.","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127462842","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

The calculation of frequency source requirements for digital communications systems 数字通信系统频率源需求的计算

Proceedings of the 2004 IEEE International Frequency Control Symposium and Exposition, 2004. Pub Date : 2004-08-23 DOI: 10.1109/FREQ.2004.1418445

Victor S. Reinhardt

引用次数: 4

A review of sapphire whispering gallery-mode oscillators including technical progress and future potential of the technology 综述了蓝宝石低语走廊模式振荡器的技术进展和未来的发展潜力

Proceedings of the 2004 IEEE International Frequency Control Symposium and Exposition, 2004. Pub Date : 2004-08-23 DOI: 10.1109/FREQ.2004.1418455

C. McNeilage, J. Searls, E. Ivanov, P. Stockwell, D. Green, M. Mossamaparast

引用次数: 29