2012 European Frequency and Time Forum最新文献_第10页

New electrostatically-excited single crystal silicon resonator vibrating in a Thickness-Extensional mode 一种新型静电激励单晶硅谐振器，以厚度-伸展模式振动

2012 European Frequency and Time Forum Pub Date : 2012-04-23 DOI: 10.1109/EFTF.2012.6502371

M. Ivan, B. Dulmet, G. Martin, S. Ballandras

{"title":"New electrostatically-excited single crystal silicon resonator vibrating in a Thickness-Extensional mode","authors":"M. Ivan, B. Dulmet, G. Martin, S. Ballandras","doi":"10.1109/EFTF.2012.6502371","DOIUrl":"https://doi.org/10.1109/EFTF.2012.6502371","url":null,"abstract":"This paper presents a new patent-pending structure of BAW resonator built on standard silicon wafer and driven by electrostatic force. Thickness-Extensional (TE) modes are exploited, yielding a fundamental frequency near 10 MHz with a 400µm-thick Si wafer. The device is based on a one-port design featuring a 1µm gap submitted to a superimposition of a DC voltage bias and a lesser-amplitude AC excitation. In contrast with conventional bar and plate MEMS resonators relying on structural resonances, our resonators are designed to use an energy-trapping of the TE waves to optimize the Q factor. The structure essentially consists of a single (100) Silicon plate, p-doped and bonded onto a Corning glass substrate by standard anodic bonding. The thin gap required for the electrostatic excitation is machined in the glass layer by Reactive Ion Etching. Extensive electrical and mechanical characterisations were performed. They match rather well the behavior predicted by the theoretical analysis. A compensation of the large static capacitance is needed to give a better access to the motional parameters. Q factors near 9000 have been observed on the fundamental TE-mode, with a sufficient coupling for frequency source applications. The stabilization of a RF oscillator using the resonators is still under development.","PeriodicalId":6409,"journal":{"name":"2012 European Frequency and Time Forum","volume":"33 1","pages":"221-226"},"PeriodicalIF":0.0,"publicationDate":"2012-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86606823","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: 7

Development of QZSS-mobile station qzss移动站的开发

2012 European Frequency and Time Forum Pub Date : 2012-04-23 DOI: 10.1109/EFTF.2012.6502401

H. Narita, J. Amagai, M. Aida, Y. Takahashi, I. Nakazawa, M. Nakamura, H. Ujihara, S. Hama

引用次数: 0

A small-linewidth absolute optical frequency source 一种小线宽绝对光频源

2012 European Frequency and Time Forum Pub Date : 2012-04-23 DOI: 10.1109/EFTF.2012.6502423

S. Raupach, T. Legero, A. Bauch, C. Grebing, C. Hagemann, T. Kessler, A. Koczwara, B. Lipphardt, H. Schnatz, U. Sterr, G. Grosche

引用次数: 0

Fiber optic RF frequency transfer on the distance of 480 km with the active stabilization of the propagation delay 光纤射频频率传输在480千米的距离上具有主动稳定的传播延时

2012 European Frequency and Time Forum Pub Date : 2012-04-23 DOI: 10.1109/EFTF.2012.6502417

L. Sliwczynski, P. Krehlik, L. Buczek, M. Lipinski, J. Kołodziej

引用次数: 2

Asymmetric spectra of phase modulated transitions of square waves 方波相位调制跃迁的不对称谱

2012 European Frequency and Time Forum Pub Date : 2012-04-23 DOI: 10.1109/EFTF.2012.6502434

M. Underhill

引用次数: 2

Eight channel embedded electronic open loop interrogation for multi sensor measurement 用于多传感器测量的八通道嵌入式电子开环询问

2012 European Frequency and Time Forum Pub Date : 2012-04-23 DOI: 10.1109/EFTF.2012.6502420

D. Rabus, G. Martin, É. Carry, S. Ballandras

{"title":"Eight channel embedded electronic open loop interrogation for multi sensor measurement","authors":"D. Rabus, G. Martin, É. Carry, S. Ballandras","doi":"10.1109/EFTF.2012.6502420","DOIUrl":"https://doi.org/10.1109/EFTF.2012.6502420","url":null,"abstract":"One strategy in addressing the issue of selectivity in direct detection gas sensors - and specifically when using piezoelectric acoustic transducers - is to use multichannel measurement approaches in which each sensor is functionalized with a different chemical layer and provides different responses when exposed to a given mixture of gasses. Within this context, an 8-channel open loop embedded electronics operating as a transmission-mode radiofrequency network analyzer has been developed. The frequency ranges generated by the synthesizer is 50 to 160 MHz or 200 to 500 MHz. A low noise phase detection scheme was implemented, in addition to magnitude measurement. This instrument is used with Surface Acoustic Wave (SAW) and High-overtone Bulk Acoustic Resonator (HBAR) transducers: in the former case, the open-loop approach allows for an improved measurement dynamics, while in the latter case multiple resonances can be probed sequentially, yielding different acoustic penetration depths in the sensing layer. Demonstration of measurement in liquid phase is provided by characterizing the gravimetric sensitivity of HBARs using copper electrodeposition. Values ranging from 2.2 to 13.1 cm2/g are observed, emphasizing a departure from a perturbative Sauerbrey-like relationship.","PeriodicalId":6409,"journal":{"name":"2012 European Frequency and Time Forum","volume":"79 1","pages":"436-442"},"PeriodicalIF":0.0,"publicationDate":"2012-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81212695","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

Two way time transfer with picoseconds precision and accuracy 具有皮秒精度和准确度的双向时间传递

2012 European Frequency and Time Forum Pub Date : 2012-04-23 DOI: 10.1109/EFTF.2012.6502429

J. Kodet, I. Procházka, J. Blažej, P. Pánek, U. Schreiber, P. Lauber

{"title":"Two way time transfer with picoseconds precision and accuracy","authors":"J. Kodet, I. Procházka, J. Blažej, P. Pánek, U. Schreiber, P. Lauber","doi":"10.1109/EFTF.2012.6502429","DOIUrl":"https://doi.org/10.1109/EFTF.2012.6502429","url":null,"abstract":"The first results of a two way time transfer between two timing devices over modest distances with sub-ps precision and a few ps accuracy were the major tasks of this work. The two way time transfer scheme employing a single coaxial cable was applied. Based on our previous results we have designed and constructed a timing device which allows registration of Times of Arrivals of pulses with sub-ps timing resolution, linearity, and stability. The concept of the timing devices enables to carry out time tagging of pulses of interest in parallel to the comparison of the time scales of these timing devices. The two timing devices were located in different laboratories and buildings within one institution. The common clock 5 MHz was referenced to a Cesium clock. The analysis of systematic errors contribution shows that the accuracy of the time transfer well below 10 ps may be achieved. The time transfer was accomplished over distances of the order of hundreds of meters. The main limitation for longer distances is the quality of the coaxial cable used for time transfer together with the amount of radiofrequency interference within the experiment.","PeriodicalId":6409,"journal":{"name":"2012 European Frequency and Time Forum","volume":"66 3 1","pages":"483-487"},"PeriodicalIF":0.0,"publicationDate":"2012-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84686033","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

Development of NPL Rb fountain frequency standard NPL Rb喷泉频率标准的制定

2012 European Frequency and Time Forum Pub Date : 2012-04-23 DOI: 10.1109/EFTF.2012.6502342

Y. Ovchinnikov

引用次数: 2

Phononic crystal sensors 声子晶体传感器

2012 European Frequency and Time Forum Pub Date : 2012-04-23 DOI: 10.1109/EFTF.2012.6502366

R. Lucklum

引用次数: 8

State-of-the-art time link calibration with a mobile TWSTFT station 最先进的时间链接校准与移动TWSTFT站

2012 European Frequency and Time Forum Pub Date : 2012-04-23 DOI: 10.1109/EFTF.2012.6502426

T. Feldmann, Arvind Balu, Cedric Molard, W. Schafer, Dirk Piester

引用次数: 2