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2016 IEEE International Frequency Control Symposium (IFCS)最新文献

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An excited state Voigt optical filter at 1.5 μm 1.5 μm的激发态Voigt滤光片
2016 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2016-05-09 DOI: 10.1109/FCS.2016.7563539
Longfei Yin, Junhui Li, Junyu Xiong, Hong Guo, Bin Luo
{"title":"An excited state Voigt optical filter at 1.5 μm","authors":"Longfei Yin, Junhui Li, Junyu Xiong, Hong Guo, Bin Luo","doi":"10.1109/FCS.2016.7563539","DOIUrl":"https://doi.org/10.1109/FCS.2016.7563539","url":null,"abstract":"An excited state Voigt atomic optical filter working at optical communication wavelength (1.5 μm) is realized. The filter achieves a peak transmittance of 53.5% with a double-peak structure, in which each one has a bandwidth of 600 MHz. Different from the Faraday anomalous dispersion optical filter, the magnetic field of the Voigt filter is perpendicular to the propagation direction of the light, which makes permanent magnets in the filter easier to realize and makes the filter better for engineering.","PeriodicalId":122928,"journal":{"name":"2016 IEEE International Frequency Control Symposium (IFCS)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129297449","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
Effects of volume scaling in AlN nano plate resonators on quality factor AlN纳米板谐振腔体积缩放对品质因子的影响
2016 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2016-05-09 DOI: 10.1109/FCS.2016.7563552
Z. Qian, Y. Hui, M. Rinaldi
{"title":"Effects of volume scaling in AlN nano plate resonators on quality factor","authors":"Z. Qian, Y. Hui, M. Rinaldi","doi":"10.1109/FCS.2016.7563552","DOIUrl":"https://doi.org/10.1109/FCS.2016.7563552","url":null,"abstract":"This paper reports on the experimental study of the effects of volume scaling in aluminum nitride (AlN) nano plate resonators on quality factor. For the first time, we show that efficient piezoelectric transduction of a high frequency (~ 1 GHz) lateral-extensional mode of vibration and a high quality factor approaching 900 can be achieved when the thickness of the AlN nano plate is scaled from 200 nm to 50 nm. Furthermore, we experimentally demonstrate that the greatly reduced thickness of the AlN plate enables the scaling of device area down to 32×28 μm2. We show that such aggressive scaling of the device lateral dimensions yields higher quality factor when the thickness of the resonator is scaled to 50 nm. In addition, we experimentally demonstrate that the deposition of such ultrathin AlN film on a plane (not patterned) bottom electrode is desirable for the implementation of resonators with high quality factors.","PeriodicalId":122928,"journal":{"name":"2016 IEEE International Frequency Control Symposium (IFCS)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123480956","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
Progress on absolute calibrations of GNSS reception chains at CNES CNES GNSS接收链绝对校准研究进展
2016 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2016-05-09 DOI: 10.1109/FCS.2016.7546776
J. Delporte, D. Valat, T. Junique, F. Marmet
{"title":"Progress on absolute calibrations of GNSS reception chains at CNES","authors":"J. Delporte, D. Valat, T. Junique, F. Marmet","doi":"10.1109/FCS.2016.7546776","DOIUrl":"https://doi.org/10.1109/FCS.2016.7546776","url":null,"abstract":"GNSS time transfer is widely used for remote clock comparisons, in particular by the BIPM for UTC/TAI. Comparing clocks with this technique requires a calibration of the GNSS reception chain (between the antenna phase center and the reference clock). CNES has been working extensively on the absolute calibration of GNSS reception chains for many years. This paper presents the recent improvements and results obtained at CNES.","PeriodicalId":122928,"journal":{"name":"2016 IEEE International Frequency Control Symposium (IFCS)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121201167","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: 13
Piezoelectric coefficients of AlScN thin films in comparison AlScN薄膜的压电系数比较
2016 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2016-05-09 DOI: 10.1109/FCS.2016.7546740
R. Matloub, M. Hadad, P. Murait
{"title":"Piezoelectric coefficients of AlScN thin films in comparison","authors":"R. Matloub, M. Hadad, P. Murait","doi":"10.1109/FCS.2016.7546740","DOIUrl":"https://doi.org/10.1109/FCS.2016.7546740","url":null,"abstract":"Since the discovery of a high piezoelectric response in AlScN by Akiyama and coworkers in 2009, a number of works of other groups confirmed the large increase of piezoelectricity when partially substituting Al cations by Sc cations, as long as the alloy grows in the wurtzite phase. This contribution will present an overview of current knowledge, and compare property data from different authors, including also properties obtained from first principles. It will comment on the values of the effective thin film piezoelectric coefficients e31, f and d31, f.","PeriodicalId":122928,"journal":{"name":"2016 IEEE International Frequency Control Symposium (IFCS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114202937","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
Validity of cross-spectrum PN measurement 跨谱PN测量的有效性
2016 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2016-05-09 DOI: 10.1109/FCS.2016.7546716
A. Poddar, U. Rohde, E. Rubiola, K. Hoffmann
{"title":"Validity of cross-spectrum PN measurement","authors":"A. Poddar, U. Rohde, E. Rubiola, K. Hoffmann","doi":"10.1109/FCS.2016.7546716","DOIUrl":"https://doi.org/10.1109/FCS.2016.7546716","url":null,"abstract":"This paper reports the anomaly of instruments that uses cross-spectrum method for the measurement of oscillator phase noise. Although, cross-spectrum techniques facilitate high sensitivity by correlation and averaging, it can give disingenuous measurement data depending upon many unknowns (phase-inversion, multi-mode spectrum associated with negative index dynamics, odd order harmonics, impedance/phase mismatch, and thermal energy) that are not taken into account. Most of the time errors in PN (phase noise) measurement is within the limit but this is not true for ultra low phase noise crystal oscillator and oscillator that uses negative index (ε <; 0, μ <; 0) resonator and filter element. We report a new caution of using metamaterial resonator as a filter between DUT and instrument as an attempt to reduce the noise floor. Exciting design choices with ε <; 0 or μ <; 0, however, impedance is not what we are used to. This discussion is imperative for emerging negative index resonator oscillator circuit at microwave and millimeter wave frequency.","PeriodicalId":122928,"journal":{"name":"2016 IEEE International Frequency Control Symposium (IFCS)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116278060","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: 1
The impact of thermal energy on cross spectrum PM noise measurements 热能对跨谱PM噪声测量的影响
2016 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2016-05-09 DOI: 10.1109/FCS.2016.7546809
Y. Gruson, V. Giordano, U. Rohde, E. Rubiola
{"title":"The impact of thermal energy on cross spectrum PM noise measurements","authors":"Y. Gruson, V. Giordano, U. Rohde, E. Rubiola","doi":"10.1109/FCS.2016.7546809","DOIUrl":"https://doi.org/10.1109/FCS.2016.7546809","url":null,"abstract":"Virtually all commercial instruments for the measurement of the oscillator PM noise make use of the Cross Spectrum method (arXiv:1004.5539 [physics.ins-det], 2010). High sensitivity is achieved by correlation and averaging on two equal channels which measure the same input, and reject the background noise. We show that a systematic error always present if the thermal energy of the input power splitter is not accounted for. Such error can result in noise under estimation up to a few dB in the lowest-noise quartz oscillators, and in a complete nonsense in the case of cryogenic oscillators.","PeriodicalId":122928,"journal":{"name":"2016 IEEE International Frequency Control Symposium (IFCS)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121640345","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
Anchor loss dependence on electrode materials in contour mode resonators 轮廓模谐振器中电极材料对锚损的依赖性
2016 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2016-05-09 DOI: 10.1109/FCS.2016.7546736
A. Lozzi, L. Villanueva, Ernest Ting-Ta Yen
{"title":"Anchor loss dependence on electrode materials in contour mode resonators","authors":"A. Lozzi, L. Villanueva, Ernest Ting-Ta Yen","doi":"10.1109/FCS.2016.7546736","DOIUrl":"https://doi.org/10.1109/FCS.2016.7546736","url":null,"abstract":"This paper presents a numerical study on the impact of metal electrodes on anchor losses in contour mode resonators (CMRs) operating around 220 MHz. Finite element method (FEM) using perfectly matched layer (PML) technique is used to predict devices responses. Our simulation results show that the FEM model without electrodes gives orders of magnitude higher quality factor than its more complex counterpart that includes metals. Besides, the materials composing the resonator stack change the maximum value of Q as well as the optimal anchor dimensions at which the maximum is found. Consequently, the anchor width and length are proven to be the most influential geometrical parameters and this important finding could directly affect the resonator's design rules. On top of that, the electrode material is the key to evaluate acoustic losses and cannot be excluded from the FEM models. Based on our study, FEM numerical tools greatly benefit the prediction of the quality factor dependence achieved via geometrical design and acoustic matching between the electrodes and the active piezoelectric layer.","PeriodicalId":122928,"journal":{"name":"2016 IEEE International Frequency Control Symposium (IFCS)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114827061","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
Cross-sectional Lamé mode filters for UHF wideband applications 用于UHF宽带应用的横截面lam<s:1>模式滤波器
2016 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2016-05-09 DOI: 10.1109/FCS.2016.7546798
C. Cassella, Guofeng Chen, Z. Qian, G. Hummel, M. Rinaldi
{"title":"Cross-sectional Lamé mode filters for UHF wideband applications","authors":"C. Cassella, Guofeng Chen, Z. Qian, G. Hummel, M. Rinaldi","doi":"10.1109/FCS.2016.7546798","DOIUrl":"https://doi.org/10.1109/FCS.2016.7546798","url":null,"abstract":"We demonstrate the first ladder filter based on the use of the recently demonstrated cross-sectional Lamé mode resonators (CLMRs). This device shows a fractional bandwidth (BW3db) as high as 3.3% while enabling an insertion-loss as low as 2.5 dB. As the resonance frequency of CLMRs can be controlled lithographically without significantly degrading their electromechanical coupling coefficient (kt2), this novel filtering technology permits to cover multiple frequency bands without adding fabrication complexity. In particular, as demonstrated in this work, this feature enables the use of CLMFs in platforms adopting carrier-aggregation. In addition, the capability of achieving large BW3dB around lithographically defined center frequencies permits to build transmitter and receiver modules of next-generation Radio-Frequency (RF) front-ends on the same chip and without adding fabrication steps.","PeriodicalId":122928,"journal":{"name":"2016 IEEE International Frequency Control Symposium (IFCS)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130482213","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 implementation of optical frequency standard based on direct frequency comb and Rb two-photon transitions 基于直接频率梳和Rb双光子跃迁的光学频率标准的实现
2016 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2016-05-09 DOI: 10.1109/FCS.2016.7546770
Jianxiao Leng, Shuangyou Zhang, Yaolin Zhang, Jianye Zhao
{"title":"The implementation of optical frequency standard based on direct frequency comb and Rb two-photon transitions","authors":"Jianxiao Leng, Shuangyou Zhang, Yaolin Zhang, Jianye Zhao","doi":"10.1109/FCS.2016.7546770","DOIUrl":"https://doi.org/10.1109/FCS.2016.7546770","url":null,"abstract":"The authors demonstrate a method to implement optical frequency standard based on frequency comb and Rb two-photon transitions. This scheme is simple and robust, which can operate for more than two hours. It can also eliminate 95% of the Doppler-broadening background, and the fractional stability can reach 8.4×10-12 and 7.1×10-13 at 1 s and 1000 s. This frequency standard may be utilized in many applications, such as optical clock.","PeriodicalId":122928,"journal":{"name":"2016 IEEE International Frequency Control Symposium (IFCS)","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134112868","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
Design innovations towards miniaturized GPS-quality clocks 小型化gps质量时钟的设计创新
2016 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2016-05-09 DOI: 10.1109/FCS.2016.7546775
J. Sebby-Strabley, C. Fertig, R. Compton, K. Salit, K. Nelson, T. Stark, Chad Langness, Robin Livingston
{"title":"Design innovations towards miniaturized GPS-quality clocks","authors":"J. Sebby-Strabley, C. Fertig, R. Compton, K. Salit, K. Nelson, T. Stark, Chad Langness, Robin Livingston","doi":"10.1109/FCS.2016.7546775","DOIUrl":"https://doi.org/10.1109/FCS.2016.7546775","url":null,"abstract":"Honeywell is developing a cold atom primary standard with reduced size, weight and power in comparison to existing clocks with similar performance, showing the feasibility of achieving the long-term goal of near-GPS-quality performance in a miniaturized, fieldable package. While the physics of these clocks is well known, unique challenges with miniaturizing the components and subsystems have required new innovative solutions. The challenges, investigated solutions, and results are discussed.","PeriodicalId":122928,"journal":{"name":"2016 IEEE International Frequency Control Symposium (IFCS)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134383797","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
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