Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052)最新文献_第3页

Animation of calculated SAW propagation fields under periodic grating structures 周期光栅结构下计算声表面波传播场的动画

Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052) Pub Date : 2000-06-07 DOI: 10.1109/FREQ.2000.887371

K. Hashimoto, T. Omori, M. Yamaguchi

引用次数: 10

Grooved AT-cut quartz plate 开槽at切割石英石板材

Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052) Pub Date : 2000-06-07 DOI: 10.1109/FREQ.2000.887392

I. Akio

引用次数: 3

Accuracy results from NIST-F1 laser-cooled cesium primary frequency standard 准确度结果来自NIST-F1激光冷却铯初级频率标准

Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052) Pub Date : 2000-06-07 DOI: 10.1109/FREQ.2000.887443

S. Jefferts, D. Meekhof, J. Shirley, M. Stepanovic, T. Parker

引用次数: 8

Frequency scales generated from carrier-phase GPS data 由载波相位GPS数据生成的频率尺度

Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052) Pub Date : 2000-06-07 DOI: 10.1109/FREQ.2000.887427

K. Senior, D. Matsakis, L. Breakiron

引用次数: 1

An ultra-miniature rubidium frequency standard 一种超小型铷频率标准

Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052) Pub Date : 2000-06-07 DOI: 10.1109/FREQ.2000.887439

Y. Koyama, H. Matsuura, K. Atsumi, K. Nakamuta, M. Sakai, I. Maruyama

{"title":"An ultra-miniature rubidium frequency standard","authors":"Y. Koyama, H. Matsuura, K. Atsumi, K. Nakamuta, M. Sakai, I. Maruyama","doi":"10.1109/FREQ.2000.887439","DOIUrl":"https://doi.org/10.1109/FREQ.2000.887439","url":null,"abstract":"An ultra-miniature, general-purpose rubidium gas cell frequency standard with a two-cell scheme has been successfully developed, with the aim of developing one of the smallest atomic frequency standards in the world. The target volume of the new rubidium frequency standard is less than 100 cm/sup 3/. It is assumed that the shape of oscillator enables to mount on a printed circuit board. In order to miniaturize the volume and height, the physics package is made small. Because the frequency of the cavity resonator is 6.834 GHz and the resonator mode is TE/sub 111/, the inside diameter of the cavity needs to be 26 mm. To reduce the inside diameter, a new cavity resonator, which contains a dielectric material, has been developed. As a result, an inside diameter of 16 mm and a capacity of 6.7 cm/sup 3/ are achieved. The total size of the physics package, which contains a rubidium-lamp exciter, a preamplifier, and a single magnetic shield of mumetal, is reduced to 25 cm/sup 3/. By applying the PLL method, instead of the conventional frequency multiplier for a high frequency circuit that generates resonance frequency of 6.834 GHz from a slave oscillator, the size and cost of the circuit are minimized. As for the reduction of the power consumption, a new switching regulator IC is adopted in the power circuit. In addition, with the use of DDS, it enables to set the output frequency within the range of 1 to 15 MHz. Because of these features, the new rubidium frequency standard is extremely small in volume (95 cm/sup 3/), and lightweight (180 grams).","PeriodicalId":294110,"journal":{"name":"Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131370672","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

Lagrangian temperature coefficients of the piezoelectric stress constants and dielectric permittivity of quartz 石英的压电应力常数和介电常数的拉格朗日温度系数

Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052) Pub Date : 2000-06-07 DOI: 10.1109/FREQ.2000.887383

Y. Yong, Wu Wei

{"title":"Lagrangian temperature coefficients of the piezoelectric stress constants and dielectric permittivity of quartz","authors":"Y. Yong, Wu Wei","doi":"10.1109/FREQ.2000.887383","DOIUrl":"https://doi.org/10.1109/FREQ.2000.887383","url":null,"abstract":"Piezoelectric, Lagrangian equations for the frequency-temperature behavior of quartz are presented. From the solutions of the third order temperature perturbations of these Lagrangian equations for the thickness resonances of infinite quartz plates with air-gap electrodes, regression equations for determining the temperature derivatives of elastic constants, piezoelectric constants and dielectric permittivities am developed. By using these regression equations, and the measured data on temperature coefficients of frequency by Bechmann, Ballato and Lukaszek [1962] for doubly rotated cuts, the first, second, and third temperature derivatives of elastic constants, piezoelectric constants and dielectric permittivities are obtained. The second and third temperature derivatives of the piezoelectric constants and dielectric permittivities were not available in the literature and are published here for the first time. These temperature derivatives will provide a more accurate map of the temperature stable cuts for bulk wave and surface acoustic wave quartz resonators.","PeriodicalId":294110,"journal":{"name":"Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133679123","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: 18

Analysis of a few piezoelectric gyroscopes 几种压电陀螺仪的分析

Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052) Pub Date : 2000-06-07 DOI: 10.1109/FREQ.2000.887333

J.S. Yang, H. Fang, Q. Jiang

引用次数: 13

Nitrogen buffer gas experiments in mercury trapped ion frequency standards 氮缓冲气体中汞捕获离子频率标准的实验

Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052) Pub Date : 2000-06-07 DOI: 10.1109/FREQ.2000.887434

R. Tjoelker, S. Chung, W. Diener, A. Kirk, L. Maleki, J. Prestage, B. Young

引用次数: 10

Investigation of device low frequency noise in 28 GHz MMIC VCO 28ghz MMIC压控振荡器中器件低频噪声的研究

Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052) Pub Date : 2000-06-07 DOI: 10.1109/FREQ.2000.887416

R. Kozhuharov, P. Sakalas, H. Zirath

引用次数: 8

Homogeneity of elastic properties of lanthanum gallium silicate crystals 硅酸镧镓晶体弹性性能的均匀性

Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052) Pub Date : 2000-06-07 DOI: 10.1109/FREQ.2000.887353

B. A. Dorogovin, S. Stepanov, G. Semenkovich, A.B. Doubovski, I. Philippov, Yu.P. Buglov, G. V. Danilova

{"title":"Homogeneity of elastic properties of lanthanum gallium silicate crystals","authors":"B. A. Dorogovin, S. Stepanov, G. Semenkovich, A.B. Doubovski, I. Philippov, Yu.P. Buglov, G. V. Danilova","doi":"10.1109/FREQ.2000.887353","DOIUrl":"https://doi.org/10.1109/FREQ.2000.887353","url":null,"abstract":"The ample prospects of growing the crystals of langasite family with diameter up to 85 mm have not been realized completely because of the absence of effective crystal quality testing methods. Efforts of researchers have largely concentrated on the development of concrete components for piezoelectric technique and acoustic electronics. But at serial production of the devices the manufacturers constantly collide the problems of the properties non-uniformity in a bulk of a crystal (repeatability of parameters) and a spread in technical parameters when the crystals from different suppliers are used. These phenomena are connected with the fact that the properties of langasite crystals change considerably depending on initial chemical components purity, technology of crystalline blend preparation and growth conditions. Using the method for testing the properties uniformity will speed up the development of langasite growth technology and will ensure the release of the items on the basis of this mineral on an industrial scale.","PeriodicalId":294110,"journal":{"name":"Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122717688","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