发布求助
文献互助 智能选刊 最新文献

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

筛选
英文 中文
A new quartz-blank sorting machine including optical and extended X-ray inspection 一个新的石英毛坯分选机，包括光学和扩展x射线检查
Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052) Pub Date : 2000-06-07 DOI: 10.1109/FREQ.2000.887361
H. Berger, H. Bradaczek, H. Pianowski, H. Bradaczek, G. Hildebrandt
{"title":"A new quartz-blank sorting machine including optical and extended X-ray inspection","authors":"H. Berger, H. Bradaczek, H. Pianowski, H. Bradaczek, G. Hildebrandt","doi":"10.1109/FREQ.2000.887361","DOIUrl":"https://doi.org/10.1109/FREQ.2000.887361","url":null,"abstract":"A new multi-task sorting machine (\"The Carousel\") for AT-cut quartz blanks has been developed, which enables the simultaneous X-ray angle measurement and X-ray topography on up to four stations placed around one X-ray tube as well as additionally light-optical surface scan and/or other actual checking procedures. From the additional checks, extended criteria for the sorting process can be derived. The throughput is two to four times larger than with the existing angle-sorting machines. The apparatus is constructed as a modular system so that it can be equipped according to the demands of the user. Due to a modified X-ray angle-measuring technique combined with a double-side laser reflection measurement, the orientations of both surfaces of blanks with widths down to 1.5 mm are determined as absolute figures.","PeriodicalId":294110,"journal":{"name":"Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052)","volume":"54 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":"123992149","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: 5
Ultra-stable OCXO using dual-mode crystal oscillator 采用双模晶体振荡器的超稳定OCXO
Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052) Pub Date : 2000-06-07 DOI: 10.1109/FREQ.2000.887400
Y. Watanabe, K. Ozaki, S. Goka, H. Sekimoto
{"title":"Ultra-stable OCXO using dual-mode crystal oscillator","authors":"Y. Watanabe, K. Ozaki, S. Goka, H. Sekimoto","doi":"10.1109/FREQ.2000.887400","DOIUrl":"https://doi.org/10.1109/FREQ.2000.887400","url":null,"abstract":"A high-stability oven controlled crystal oscillator (OCXO) (frequency stability; /spl plusmn/0.5 ppb from -10 to +50/spl deg/C) has been developed using a dual-mode SC-cut quartz crystal oscillator. The OCXO described here uses a conventional oven control system for coarse compensation and a digital correction system, which uses B-mode signals as a temperature sensor, for fine compensation. These compensations combine to greatly improve the C-mode frequency stability when the ambient temperature changes. The experimental results indicated that the proposed OCXO had a frequency-temperature stability 60 times better than that of a free-running mode oscillator.","PeriodicalId":294110,"journal":{"name":"Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052)","volume":"1 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":"125930739","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
A precision frequency standard comparison method and instrument 一种精密频率标准比较方法及仪器
Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052) Pub Date : 2000-06-07 DOI: 10.1109/FREQ.2000.887417
W. Zhou, Jianguo Yu, Jie Li, Z. Xuan, Hui Zhou
{"title":"A precision frequency standard comparison method and instrument","authors":"W. Zhou, Jianguo Yu, Jie Li, Z. Xuan, Hui Zhou","doi":"10.1109/FREQ.2000.887417","DOIUrl":"https://doi.org/10.1109/FREQ.2000.887417","url":null,"abstract":"The linear phase comparison method is used widely in the long-term performance measurement of frequency standards. Combined with a high-speed voltage measuring method, high-resolution short-term stability measurement can also be accomplished based on the phase comparison device. In this case, sampling speed, voltage measuring accuracy and the measuring range will influence the comparison precision of the frequency standard. For higher resolution and convenient use, a \"voltage self-correction\" method based on linear phase comparison can be used. In the frequency standard comparison, 1/spl times/10/sup -13///spl tau/ measurement precision can be obtained and it has a good identical measuring result with other high-precision frequency standard comparators.","PeriodicalId":294110,"journal":{"name":"Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052)","volume":"124 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":"131367119","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
Cryogenic composite whispering-gallery mode resonators for low-phase noise frequency standards 用于低相位噪声频率标准的低温复合低语通道模式谐振器
Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052) Pub Date : 2000-06-07 DOI: 10.1109/FREQ.2000.887407
M. Winter, N. Klein, L. Hao, J. Gallop
{"title":"Cryogenic composite whispering-gallery mode resonators for low-phase noise frequency standards","authors":"M. Winter, N. Klein, L. Hao, J. Gallop","doi":"10.1109/FREQ.2000.887407","DOIUrl":"https://doi.org/10.1109/FREQ.2000.887407","url":null,"abstract":"We have investigated composite whispering-gallery mode resonators with resonant frequencies around 10 GHz each consisting of two ring-shaped thin (300 and 400 /spl mu/m) rutile platelets being arranged at the top- and bottom endplate of a sapphire cylinder. This composite dielectric puck is held in place inside a copper cavity via quartz spacers. For coupling we either used loops in the case of coaxial feedlines or apertures in the case of waveguides. According to numerical field simulations using MAFIA (Schmidt 1992) the fraction of electromagnetic energy stored in the rutile discs is expected to be 0.001. From experimental data of permittivity and loss tangent of rutile and sapphire this filling factor should correspond to a turning point in the temperature dependence of the resonance frequency at 62 K, an unloaded quality factor of 10/sup 7/, and a second derivative of resonant frequency with temperature at the turning point of -0.9 ppm/K/sup 2/. The latter corresponds to a relative frequency stability of 2/spl middot/10/sup -13/ for temperature deviations of 1 mK from the turning point. This number makes sapphire-rutile composite WG resonators extremely challenging for frequency standard applications. Experimentally, we have found a turning point at 65 K and Q/sub 0/=0.9/spl middot/10/sup 7/ for the loop-coupled resonator and a turning point at 79 K and Q/sub 0/=4/spl middot/10/sup 6/ for the waveguide-coupled one.","PeriodicalId":294110,"journal":{"name":"Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052)","volume":"2 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":"124024349","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
A novel architecture for ROM-less sine-output direct digital, frequency synthesizers by using the 2/sup nd/-order parabolic approximation 采用2/sup和/阶抛物线近似的无rom正弦输出直接数字频率合成器的新结构
Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052) Pub Date : 2000-06-07 DOI: 10.1109/FREQ.2000.887367
A. M. Sodagar, G. Roientan
{"title":"A novel architecture for ROM-less sine-output direct digital, frequency synthesizers by using the 2/sup nd/-order parabolic approximation","authors":"A. M. Sodagar, G. Roientan","doi":"10.1109/FREQ.2000.887367","DOIUrl":"https://doi.org/10.1109/FREQ.2000.887367","url":null,"abstract":"An extended form of the parabolic approximation, which was previously introduced by the authors, is proposed. The proposed form of the approximation is so close to the sine function that satisfies the accuracy requirements for a typical sine-output DDFS. Then, the approximation is used to develop a novel ROM-less architecture for sine-output direct digital frequency synthesizers. Based on the optimized architecture, an experimental test system is developed. Experimental results for the implemented ROM-less sine-output parabolic DDFS show that the approximation error will cause harmonic levels below the spurious level associated with the output quantization.","PeriodicalId":294110,"journal":{"name":"Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052)","volume":"38 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":"129166767","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: 19
Thermal transient studies of anharmonic sensors of aging of precision AT-cut crystal resonator 精密at切割晶体谐振器老化非谐波传感器的热瞬态研究
Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052) Pub Date : 2000-06-07 DOI: 10.1109/FREQ.2000.887331
Y. Shmaliy, A. Marienko, O.Ph. Kurotchka, M. Torres-Cisneros, O. Ibarra-Manzano
{"title":"Thermal transient studies of anharmonic sensors of aging of precision AT-cut crystal resonator","authors":"Y. Shmaliy, A. Marienko, O.Ph. Kurotchka, M. Torres-Cisneros, O. Ibarra-Manzano","doi":"10.1109/FREQ.2000.887331","DOIUrl":"https://doi.org/10.1109/FREQ.2000.887331","url":null,"abstract":"The report addresses the thermal transient of the sensor of aging (anharmonic mode h/sub 513/ of AT-cut crystal resonator) of the crystal standard based on the modulational method. The thermal dynamic properties of the aging sensor influence the effect of the aging compensation for the standard. We present the thermal model of a crystal resonator and consider in detail the model of the thermally induced frequency transient in a resonator within the ovenized oscillator. The model has been examined for the aging sensor excited by modulation within the Colpitts oscillator. Based on the model, we digitally simulate the anticipated behavior of the thermally induced frequency of the aging sensor and compare it with that obtained by measurement. Finally, we show how to compensate the temperature dependence of the aging code of the standard.","PeriodicalId":294110,"journal":{"name":"Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052)","volume":"128 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":"128150450","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
Drive level dependence versus residual phase noise of fifth overtone AT cut quartz crystals 五次泛音AT切割石英晶体的驱动电平依赖性与剩余相位噪声
Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052) Pub Date : 2000-06-07 DOI: 10.1109/FREQ.2000.887359
P. Bates
{"title":"Drive level dependence versus residual phase noise of fifth overtone AT cut quartz crystals","authors":"P. Bates","doi":"10.1109/FREQ.2000.887359","DOIUrl":"https://doi.org/10.1109/FREQ.2000.887359","url":null,"abstract":"Currently no valid method of choosing low noise AT cut crystals during crystal manufacturing is available within the crystal manufacturing industry. Drive level dependence (DLD) is a parameter, which can be readily measured by most crystal manufacturers. This paper makes a comparison of DLD measurements to residual phase noise measurements of fifth overtone AT crystals with fixed electrical parameters from various manufacturers. A discussion of crystal manufacturing methods pertaining to reproducibility of low noise fifth overtone AT crystals is also briefly discussed.","PeriodicalId":294110,"journal":{"name":"Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052)","volume":"3 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":"121206363","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
Research on special resonant technologies in photonics system 光子系统中特殊谐振技术的研究
Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052) Pub Date : 2000-06-07 DOI: 10.1109/FREQ.2000.887342
Dai Enguang
{"title":"Research on special resonant technologies in photonics system","authors":"Dai Enguang","doi":"10.1109/FREQ.2000.887342","DOIUrl":"https://doi.org/10.1109/FREQ.2000.887342","url":null,"abstract":"Oscillators that can directly convert light energy into spectrally pure microwave and millimeter wave signals are very important. Although these approaches offer significant advantages, they do provide several challenges for practical implementation. As far as the hybrid acoustic/electro-optic resonator is concerned, it is easy to obtain oscillation and has good frequency stability. The technology developed here is very suitable for the long distance monitor, long distance oscillation control or remote sensing. Based upon the technology, a series of novel sensors or instrumentation can be developed. Because the technology has combined SAW technology and optical fiber communication technology, both fiber sensor and SAW sensor can be built on the same technology platform. This technology can link with an IF acquisition system. To acquire IF frequency signal coming from a microwave mixer the data acquisition system itself should be stable enough. The developed system can acquire frequency signals from ten signal-channels, the highest acquisition frequency was up to 8.5MHz and the frequency resolution was 0.5Hz.","PeriodicalId":294110,"journal":{"name":"Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052)","volume":"36 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":"114264164","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
Determination of the piezoelectric constants of LGN, LGS, and LGT LGN、LGS和LGT压电常数的测定
Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052) Pub Date : 2000-06-07 DOI: 10.1109/FREQ.2000.887352
R. Smythe, G. Hague
{"title":"Determination of the piezoelectric constants of LGN, LGS, and LGT","authors":"R. Smythe, G. Hague","doi":"10.1109/FREQ.2000.887352","DOIUrl":"https://doi.org/10.1109/FREQ.2000.887352","url":null,"abstract":"The piezoelectric constants of LGN (langanite, La/sub 3/Ga/sub 5.5/Nb/sub 0.5/O/sub 14/), LGS (langasite, La/sub 3/Ga/sub 5/SiO/sub 14/) and LGT (langatate, La/sub 3/Ga/sub 5.5/Ta/sub 0.5/O/sub 14/) have been determined over a temperature range of -55/spl deg/C to +125/spl deg/C from measurements of the equivalent circuit parameters of suitably oriented plano-convex resonators. Apart from the piezoelectric temperature coefficients for LGT, which appear to be the first reported, the new values are compared with values previously reported.","PeriodicalId":294110,"journal":{"name":"Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052)","volume":"1 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":"114320614","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: 17
The SAW properties of sputtered SiO/sub 2/ on X-112/spl deg/Y LiTaO/sub 3/ 溅射SiO/ sub2 /在X-112/spl deg/Y LiTaO/ sub3 /上的SAW性能
Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052) Pub Date : 2000-06-07 DOI: 10.1109/FREQ.2000.887357
F. Hickernell
{"title":"The SAW properties of sputtered SiO/sub 2/ on X-112/spl deg/Y LiTaO/sub 3/","authors":"F. Hickernell","doi":"10.1109/FREQ.2000.887357","DOIUrl":"https://doi.org/10.1109/FREQ.2000.887357","url":null,"abstract":"The surface acoustic wave (SAW) propagation properties on the X-cut plate, 112/spl deg/Y rotated, lithium tantalate (LiTaO/sub 3/) substrate with and without sputtered SiO/sub 2/ film layers have been investigated using interdigital transducer electrode structures. Thicknesses of SiO/sub 2/ of 500 nm and 1000 nm were sputter deposited on the X-112/spl deg/Y LiTaO/sub 3/ substrates. A series array of aluminum electrode patterns deposited on the film facilitated the excitation of a wide frequency band of harmonic waves up to 2.0 GHz, and permitted delineation of SAW velocity and propagation loss characteristics for several values of film-thickness to acoustic-wavelength (t//spl lambda/) ratio. A resonator pattern at the substrate/film interface, permitted the capacitance ratio (C/sub m//C/sub o/), related to coupling factor, and the temperature coefficient of frequency (TCF) to be measured. A high velocity pseudo-SAW (HVPSAW) mode was observed with a velocity near 6300 m/s.","PeriodicalId":294110,"journal":{"name":"Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052)","volume":"738 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":"115131612","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信