发布求助
文献互助 智能选刊 最新文献

Proceedings of 1996 IEEE International Frequency Control Symposium最新文献

筛选
英文 中文
Longitudinal mode behaviour in surface transverse wave two-port resonators 表面横波双端口谐振器的纵模特性
Proceedings of 1996 IEEE International Frequency Control Symposium Pub Date : 1996-06-05 DOI: 10.1109/FREQ.1996.559863
I. Avramov, M. Suohai, L. Wen
{"title":"Longitudinal mode behaviour in surface transverse wave two-port resonators","authors":"I. Avramov, M. Suohai, L. Wen","doi":"10.1109/FREQ.1996.559863","DOIUrl":"https://doi.org/10.1109/FREQ.1996.559863","url":null,"abstract":"This paper presents results from a systematic experimental study on the behavior of longitudinal modes in 1.26 GHz extended cavity surface transverse wave (STW) two-port resonators which are well known for their low loss and high Q. The experiment was performed with 8 devices using the same transducer, reflector and waveguide geometry and deposited on the same photomask. The difference between them was the length of the spacer in the cavity between input and output transducer which was altered by a step of lambda/16 from device to device. Groups of 8 devices were fabricated on rotated Y-cut quartz substrates with different film thicknesses and a nearly constant mark-to-period ratio. The longitudinal mode behaviour was evaluated by measurements of the device frequency and group delay responses. The same photomask was then used to fabricate 780 MHz SAW devices. The data from these devices were carefully evaluated and compared with the data from the STW ones. In the second part of the experiment the spacer was kept constant and STW devices with different film thicknesses were fabricated and tested. The results of this study provide a comprehensive guide on how to select appropriate film thicknesses and perform spacer corrections in practical device designs.","PeriodicalId":140391,"journal":{"name":"Proceedings of 1996 IEEE International Frequency Control Symposium","volume":"218 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121165943","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
The use of multi-pole bandpass filters and other multiple resonator circuitry as oscillator frequency stabilization elements 采用多极带通滤波器和其他多谐振电路作为振荡器的稳频元件
Proceedings of 1996 IEEE International Frequency Control Symposium Pub Date : 1996-06-05 DOI: 10.1109/FREQ.1996.560256
M. Driscoll
{"title":"The use of multi-pole bandpass filters and other multiple resonator circuitry as oscillator frequency stabilization elements","authors":"M. Driscoll","doi":"10.1109/FREQ.1996.560256","DOIUrl":"https://doi.org/10.1109/FREQ.1996.560256","url":null,"abstract":"This paper describes the design considerations and tradeoffs involved in the use of multi-pole bandpass filters and other cascaded resonator structures as oscillator frequency stabilization elements. Oscillator signal near-carrier noise is minimized when the oscillator loop group delay is large. A comparison has been made between single-pole and multi-pole bandpass filters and other multiple resonator circuits with regard to the most efficient way of obtaining maximum, net group delay at a given insertion loss. As an example, at 12 dB net insertion loss, a two-pole filter provides approximately the same group delay as either a higher order filter or an isolated cascade of two, 6 dB insertion loss, single-pole filters. Calculated results for variable order (number of poles), fixed loss filters are provided in terms of normalized group delay, amplitude response bandwidth, and group delay \"flatness\" bandwidth.","PeriodicalId":140391,"journal":{"name":"Proceedings of 1996 IEEE International Frequency Control Symposium","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122253919","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: 11
Spur reduction techniques in sine output direct digital synthesis 正弦输出直接数字合成中的杂散减小技术
Proceedings of 1996 IEEE International Frequency Control Symposium Pub Date : 1996-06-05 DOI: 10.1109/FREQ.1996.560280
J. Vankka
{"title":"Spur reduction techniques in sine output direct digital synthesis","authors":"J. Vankka","doi":"10.1109/FREQ.1996.560280","DOIUrl":"https://doi.org/10.1109/FREQ.1996.560280","url":null,"abstract":"This paper reviews the spur reduction techniques used in the sine output direct digital synthesizers (DDSs). In each method the spur reduction properties and trade-offs are investigated. The analysis is restricted only to phase and amplitude quantization errors. Three novel spur reduction methods in the DDS will be presented: modified Nicholas phase accumulator, a high-pass filtered amplitude dither and a tunable amplitude error feedback structure.","PeriodicalId":140391,"journal":{"name":"Proceedings of 1996 IEEE International Frequency Control Symposium","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122233985","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: 45
A novel method for aging estimation of crystal oscillators 一种估算晶体振荡器老化的新方法
Proceedings of 1996 IEEE International Frequency Control Symposium Pub Date : 1996-06-05 DOI: 10.1109/FREQ.1996.560272
W. Su
{"title":"A novel method for aging estimation of crystal oscillators","authors":"W. Su","doi":"10.1109/FREQ.1996.560272","DOIUrl":"https://doi.org/10.1109/FREQ.1996.560272","url":null,"abstract":"The frequency aging of a quartz crystal oscillator is an important characteristic of frequency stability. Aging estimation for frequency correction of a precision crystal oscillator is a valid approach in improving oscillator performance. This paper presents an estimation and prediction model in which the frequency and frequency aging are described by a family of shifted logarithmic functions. Weights of logarithmic function are estimated recursively based upon the present data inputs and the last data outputs to avoid massive data storage. Outlier points in frequency measurements are filtered using a robust estimation computation. Finally, the frequency of an oscillator is predicted based upon the best estimated weights of logarithmic functions.","PeriodicalId":140391,"journal":{"name":"Proceedings of 1996 IEEE International Frequency Control Symposium","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130695010","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
Towards an OCXO with infrared heater 带红外加热器的OCXO
Proceedings of 1996 IEEE International Frequency Control Symposium Pub Date : 1996-06-05 DOI: 10.1109/FREQ.1996.559950
I. Balaz, M. Minárik
{"title":"Towards an OCXO with infrared heater","authors":"I. Balaz, M. Minárik","doi":"10.1109/FREQ.1996.559950","DOIUrl":"https://doi.org/10.1109/FREQ.1996.559950","url":null,"abstract":"This paper deals with a method of modelling and design of a frequency stabilization system using a dual mode crystal oscillator with AT-cut resonator and IR heater. The main goal of the modeling has been to determine a relation among time constants and thermal parameters of a couple IR heater-quartz resonator and variable parameters of a control feedback circuit. For this purpose described method employs experimental access to obtain the thermal transfer characteristic of the pair heater-quartz and identification approach which allows to create a nonlinear differential equation of the second or higher order. Computer simulations have been provided on a base of this differential equation with assistance of program Mathcad.","PeriodicalId":140391,"journal":{"name":"Proceedings of 1996 IEEE International Frequency Control Symposium","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134367760","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
Fifty years of progress in quartz crystal frequency standards 石英晶体频率标准五十年的进展
Proceedings of 1996 IEEE International Frequency Control Symposium Pub Date : 1996-06-05 DOI: 10.1109/FREQ.1996.559817
M. E. Frerking, Rockwell International, Collins Avionics
{"title":"Fifty years of progress in quartz crystal frequency standards","authors":"M. E. Frerking, Rockwell International, Collins Avionics","doi":"10.1109/FREQ.1996.559817","DOIUrl":"https://doi.org/10.1109/FREQ.1996.559817","url":null,"abstract":"The progression of developments in crystal frequency standards is traced through the last half century. The paper emphasizes the underlying technical changes and innovations that have driven the remarkable progress, while keeping in mind the contribution of the great body of information that was already available at the beginning of the period. The paper gives a treatment of the progress of ovenized crystal frequency standards from the early vacuum tube days through implementations using transistors, LSI, and hybrid construction. The progression of TCXO developments is also covered including analog thermistor temperature compensation, digital compensation, and techniques using micro-computers, and self-sensed oscillators.","PeriodicalId":140391,"journal":{"name":"Proceedings of 1996 IEEE International Frequency Control Symposium","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133878532","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: 32
Two-way time and frequency transfer in SONET 双向时间和频率传输在SONET
Proceedings of 1996 IEEE International Frequency Control Symposium Pub Date : 1996-06-05 DOI: 10.1109/FREQ.1996.560309
M. Weiss, S. Jefferts, J. Levine, S. Dilla, T. Parker, E.W. Bell
{"title":"Two-way time and frequency transfer in SONET","authors":"M. Weiss, S. Jefferts, J. Levine, S. Dilla, T. Parker, E.W. Bell","doi":"10.1109/FREQ.1996.560309","DOIUrl":"https://doi.org/10.1109/FREQ.1996.560309","url":null,"abstract":"We have built a two-way time-transfer device which can use any currently unused byte in the SONET/SDH overhead to effect time transfer. The hardware should allow time transfer over short distances (km) with stabilities less than 10 ps for integration times greater than 1000 s. Accuracy at the same level in a dedicated fiber should also be possible. Time transfer though telecommunications network equipment has not yet been investigated.","PeriodicalId":140391,"journal":{"name":"Proceedings of 1996 IEEE International Frequency Control Symposium","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128411489","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
Measurement sensitivity analysis of one port BAW resonators 单端口BAW谐振器的测量灵敏度分析
Proceedings of 1996 IEEE International Frequency Control Symposium Pub Date : 1996-06-05 DOI: 10.1109/FREQ.1996.559879
B.D. Andersen, N.A. Belkerdid
{"title":"Measurement sensitivity analysis of one port BAW resonators","authors":"B.D. Andersen, N.A. Belkerdid","doi":"10.1109/FREQ.1996.559879","DOIUrl":"https://doi.org/10.1109/FREQ.1996.559879","url":null,"abstract":"Equivalent circuit model parameters for both bulk acoustic wave (BAW) and surface acoustic wave (SAW) resonators are usually extracted from measured S-parameter data. All S-parameter measurement systems ultimately introduce random perturbations which result in uncertainties in the extracted parameters. This stochastic behavior is best understood by performing a sensitivity analysis. A theoretical first order analysis was found to be very accurate for high figure of merit resonators, where the static capacitance does not contribute significantly to the overall admittance at series resonance. A more accurate measurement sensitivity analysis for single port quartz resonators was also developed. This technique did not disregard the effect of the static capacitance, as the first order approximation did. The result was a sensitivity analysis model which accurately predicted the uncertainty in measured data. This paper presents the results of the sensitivity analysis which accurately predicts the standard deviation to mean ratio of the motional arm resistance for any one port resonator, showing the effects of both magnitude and phase of the input reflection coefficient.","PeriodicalId":140391,"journal":{"name":"Proceedings of 1996 IEEE International Frequency Control Symposium","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117321871","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
Development of low phase noise millimeter-wave sources using MMIC technology 利用MMIC技术开发低相位噪声毫米波源
Proceedings of 1996 IEEE International Frequency Control Symposium Pub Date : 1996-06-05 DOI: 10.1109/FREQ.1996.560268
H. Wang, K. Chang, G. Dow, B. Allen
{"title":"Development of low phase noise millimeter-wave sources using MMIC technology","authors":"H. Wang, K. Chang, G. Dow, B. Allen","doi":"10.1109/FREQ.1996.560268","DOIUrl":"https://doi.org/10.1109/FREQ.1996.560268","url":null,"abstract":"Millimeter-wave (MMW) sources based on MMIC technology have been developed in the past few years at TRW. These MMW sources included MMIC fundamental mode VCOs, and frequency source modules which integrated several MMIC chips. The MMICs were fabricated using high electron mobility transistor (HEMT) and heterojunction bipolar transistor (HBT) technologies based on GaAs and InP materials. This paper summarizes the development status of our MMIC-based MMW sources. In particular, low phase noise MMW sources have been demonstrated with HBT device technology.","PeriodicalId":140391,"journal":{"name":"Proceedings of 1996 IEEE International Frequency Control Symposium","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114399366","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
Low-power CMOS current-conveyor relaxation oscillators 低功耗CMOS电流输送弛豫振荡器
Proceedings of 1996 IEEE International Frequency Control Symposium Pub Date : 1996-06-05 DOI: 10.1109/FREQ.1996.559953
J. Popovic, A. Pavasovic, D. Vasiljevic
{"title":"Low-power CMOS current-conveyor relaxation oscillators","authors":"J. Popovic, A. Pavasovic, D. Vasiljevic","doi":"10.1109/FREQ.1996.559953","DOIUrl":"https://doi.org/10.1109/FREQ.1996.559953","url":null,"abstract":"The purpose of this paper is to investigate in detail the design of a current conveyor circuit suitable for implementation of low-voltage, low-power RC and crystal oscillators, and to show the design and performances of such oscillators. All circuits are based on the Fabre-Normand translinear conveyor. Circuits are biased in the subthreshold region whenever possible.","PeriodicalId":140391,"journal":{"name":"Proceedings of 1996 IEEE International Frequency Control Symposium","volume":"2011 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125631391","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
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