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

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A novel voltage controlled temperature compensated crystal oscillator for eliminating the trim effect 一种新型的压控温控补偿晶体振荡器，消除了微调效应
2016 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2016-05-09 DOI: 10.1109/FCS.2016.7546741
Q. Bai, Xian-he Huang, Dong Liu
{"title":"A novel voltage controlled temperature compensated crystal oscillator for eliminating the trim effect","authors":"Q. Bai, Xian-he Huang, Dong Liu","doi":"10.1109/FCS.2016.7546741","DOIUrl":"https://doi.org/10.1109/FCS.2016.7546741","url":null,"abstract":"A novel scheme of voltage controlled temperature compensated crystal oscillator (VCTCXO) which could realize frequency adjustment and temperature compensation simultaneously is presented. The scheme is based on the binary function V = F(T, ft) which could be obtained from the temperature experiments, where ft is the target output frequency (controlled and adjusted by external control voltage); T is the ambient temperature and V is the compensating voltage. Through extending the two-dimensional temperature-frequency characteristics curve to three-dimensional surface and using a microcontroller to works out compensating voltages according to the above binary function, this new approach provides the possibility for eliminating the adverse influence of trim effect on traditional temperature compensated crystal oscillators (TCXOs).","PeriodicalId":122928,"journal":{"name":"2016 IEEE International Frequency Control Symposium (IFCS)","volume":"29 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":"126331340","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
Ultra wideband balanced fan-shaped three-transducer low-loss leaky SAW filters 超宽带平衡扇形三换能器低损耗漏形SAW滤波器
2016 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2016-05-09 DOI: 10.1109/FCS.2016.7546794
D. Sergei
{"title":"Ultra wideband balanced fan-shaped three-transducer low-loss leaky SAW filters","authors":"D. Sergei","doi":"10.1109/FCS.2016.7546794","DOIUrl":"https://doi.org/10.1109/FCS.2016.7546794","url":null,"abstract":"This paper presents the new ultra wideband balanced leaky SAW filters using fan-shaped IDTs with the low insertion loss, fractional bandwidth of 39-55% on 64°YX and 41°YX LiNbO3. The three-transducer structure containing one input fan-shaped IDT and two output fan-shaped IDTs with the split electrodes is used in these filters. For an efficient triple transit suppression in the wide bandpass of the filters the output IDTs were made with a different geometry: with symmetric and antisymmetric configuration of the electrodes. The constructional and topological optimization of the leaky SAW filters is provided with a computer simulation using an δ-function model. The 64 and 66 MHz leaky SAW filters have shown bandwidths of 35 and 26 MHz, insertion loss of 7-8 dB, passband ripple of less than 3 dB, shape factor of 1.35-1.47, stopband attenuation over 40 dB in a matched system. The filters are housed in the 13.3×6.5×1.8 mm SMD packages and can operate in the balanced/unbalanced system.","PeriodicalId":122928,"journal":{"name":"2016 IEEE International Frequency Control Symposium (IFCS)","volume":"86 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":"116237722","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
Thickness shear vibration of ZnO thin film with dissipation 带耗散的ZnO薄膜的厚度剪切振动
2016 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2016-05-09 DOI: 10.1109/FCS.2016.7546735
Jianke Du, Xian Fu, J. Lou, Bin Huang, Ji Wang
{"title":"Thickness shear vibration of ZnO thin film with dissipation","authors":"Jianke Du, Xian Fu, J. Lou, Bin Huang, Ji Wang","doi":"10.1109/FCS.2016.7546735","DOIUrl":"https://doi.org/10.1109/FCS.2016.7546735","url":null,"abstract":"Thickness shear vibration of ZnO thin film with consideration of viscosity effects is investigated. The Kelvin mode is used to describe the viscosity of the materials. Based on the three-dimensional piezoelectric theory, the governing equations of ZnO thin film are obtained. The calculation results are presented and discussed in detail.","PeriodicalId":122928,"journal":{"name":"2016 IEEE International Frequency Control Symposium (IFCS)","volume":"30 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":"127699338","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
Oscillator resistor noise optimisation paradigm 振荡器电阻噪声优化范例
2016 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2016-05-09 DOI: 10.1109/FCS.2016.7546808
M. Underhill
{"title":"Oscillator resistor noise optimisation paradigm","authors":"M. Underhill","doi":"10.1109/FCS.2016.7546808","DOIUrl":"https://doi.org/10.1109/FCS.2016.7546808","url":null,"abstract":"A theoretical explanation is given for the significant reduction in the phase noise of varactor tuned voltage controlled oscillators achievable by the use of by multiple parallel varactor diodes. The noise temperature of the total resonator resistance lowered by the number of parallel diodes used. Minimal electromagnetic coupling gives maximum de-correlation and minimal total noise for multiple equal separated noise sources. Thus we show that the noise temperature of any varactor, inductor or resonator may be made significantly below ambient by suitable design. Resonator resistance defines the unloaded Q factor irrespective of its noise temperature. To exploit this fully for a low-noise oscillator its amplifier must have a noise temperature lower than that of the resonator. The Underhill Q-Multiplier oscillator model shows how this may be done using minimal `noiseless' coupling to the resonator and predicts the achievable performance. The optimum coupling occurs when the resonator and amplifier noise contributions approximately equal. `Optimised Noiseless Coupling' is thus a new paradigm and way forward in low noise oscillator design.","PeriodicalId":122928,"journal":{"name":"2016 IEEE International Frequency Control Symposium (IFCS)","volume":"5 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":"131766101","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
Solidly mounted resonator using shear horizontal mode plate wave in LiNbO3 plate 利用剪切水平模式板波在LiNbO3板中的固体安装谐振器
2016 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2016-05-09 DOI: 10.1109/FCS.2016.7546795
M. Kadota, Shuji Tanaka
{"title":"Solidly mounted resonator using shear horizontal mode plate wave in LiNbO3 plate","authors":"M. Kadota, Shuji Tanaka","doi":"10.1109/FCS.2016.7546795","DOIUrl":"https://doi.org/10.1109/FCS.2016.7546795","url":null,"abstract":"A 0-th shear horizontal (SHo) mode plate wave has an electromechanical coupling factor k2 larger than 50% in a (0°, 120°, 0°) LiNbOs (LN) plate thinner than 0.1λ (λ is a pitch of interdigital transducer). However, the structure is fragile, because the plate thickness is as thin as 0.5~0.6 μm for devices working in several hundred MHz range. To address this issue, a solidly mounted resonator (SMR) structure was applied to SH mode plate resonators. The materials and layer thicknesses of a Bragg reflector, the Euler angle and thickness of a LN plate, and the thickness and material of electrodes were investigated to obtain large k2 and spurious-free response by finite element method (FEM) simulation. The designed Bragg reflector is composed of 6 layers of SiO2 and AlN. The best Euler angle is (0°, 90°, 0°) and the suitable thickness of a LN plate is 0.3 to 1 λ. Also, heavy and thick electrodes are better for interdigital transducers (IDT). This design is significantly different from that of the cavity type. A SMR type plate wave resonator of several hundred MHz was fabricated using 2 μm thick LN, and a wide bandwidth of 20% was measured.","PeriodicalId":122928,"journal":{"name":"2016 IEEE International Frequency Control Symposium (IFCS)","volume":"94 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":"114402962","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: 10
Dual-mode Ramsey cavity for a dual Rb/Cs atomic clock 双Rb/Cs原子钟的双模Ramsey腔
2016 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2016-05-09 DOI: 10.1109/FCS.2016.7546815
F. Sun, Xian-he Huang, Q. Bai
{"title":"Dual-mode Ramsey cavity for a dual Rb/Cs atomic clock","authors":"F. Sun, Xian-he Huang, Q. Bai","doi":"10.1109/FCS.2016.7546815","DOIUrl":"https://doi.org/10.1109/FCS.2016.7546815","url":null,"abstract":"In this paper, we propose a dual-mode Ramsey cavity for a dual Rb/Cs atomic clock, with resonances at 6.83GHz and 9.19GHz under the two different operating modes, respectively. Thus, the proposed cavity can excite Rb atoms and Cs atoms clock transition in the same environment (e.g., static magnetic field, temperature, and/or the asymmetric length between the two arms due to a single U-shaped structure). This design provides a compact physical package for a dual Rb/Cs clock. Another potential application of the dual-mode is high-accuracy comparison measurement. As an example, a dual-mode cavity with TE105 and TE109 modes was simulated.","PeriodicalId":122928,"journal":{"name":"2016 IEEE International Frequency Control Symposium (IFCS)","volume":"76 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":"124449872","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
Electronic scheme for full control of organic piezoelectric MEMS resonators 完全控制有机压电MEMS谐振器的电子方案
2016 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2016-05-09 DOI: 10.1109/FCS.2016.7546797
P. Ducrot, I. Dufour, C. Ayela, F. Mathieu, L. Nicu
{"title":"Electronic scheme for full control of organic piezoelectric MEMS resonators","authors":"P. Ducrot, I. Dufour, C. Ayela, F. Mathieu, L. Nicu","doi":"10.1109/FCS.2016.7546797","DOIUrl":"https://doi.org/10.1109/FCS.2016.7546797","url":null,"abstract":"This work deals with an acquiring system dedicated to the measurement of the resonance frequency and the quality factor of organic piezoelectric resonators. These resonators consist of a free-standing cantilever and its non-released counterpart used to compensate electrical signals that are not due to mechanical behavior. The system uses a capacitive half-bridge with two AC voltages in opposite phases, associated with an IQ demodulator. The magnitudes of the two AC voltages can be set independently from one another, which enables a powerful compensation of parasitic capacitance. Thanks to this dedicated system, measurements of the resonance frequency of organic piezoelectric resonators both in air and liquid media have been performed. Several methods to determine accurately the resonance frequency have been tested and compared in terms of measurement noise.","PeriodicalId":122928,"journal":{"name":"2016 IEEE International Frequency Control Symposium (IFCS)","volume":"41 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":"121587335","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
Sensitivity enhancement of a dead-zone free all-optical 4He atomic magnetometer based on a liquid-crystal polarization rotator 基于液晶偏振旋转器的无死区全光4He原子磁强计灵敏度增强
2016 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2016-05-09 DOI: 10.1109/FCS.2016.7546760
Teng Wu, Xiang Peng, Shuyu Wu, Qingxing Cao, Zaisheng Lin, Haidong Wang, Wenhao Li, Hong Guo
{"title":"Sensitivity enhancement of a dead-zone free all-optical 4He atomic magnetometer based on a liquid-crystal polarization rotator","authors":"Teng Wu, Xiang Peng, Shuyu Wu, Qingxing Cao, Zaisheng Lin, Haidong Wang, Wenhao Li, Hong Guo","doi":"10.1109/FCS.2016.7546760","DOIUrl":"https://doi.org/10.1109/FCS.2016.7546760","url":null,"abstract":"We report our recent progress in the experimental implementing of an all-optical 4He atomic magnetometer being free from the dead-zone effect. A liquid crystal is adopted to constitute a polarization rotator. The light linear polarization vector can be adjusted and ultimately kept perpendicular with respect to the varying ambient magnetic field direction. We then make some further investigations to enhance the magnetometer sensitivity through reducing the laser intensity noise and optimizing parameters like the laser beam size, the input laser power and the modulation depth. The magnetometer demonstrates an improved magnetic field sensitivity of about 300 fT/Hz1/2 for frequencies above 10 Hz.","PeriodicalId":122928,"journal":{"name":"2016 IEEE International Frequency Control Symposium (IFCS)","volume":"44 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":"125672268","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
Ultra low noise 10 GHz dual loop optoelectronic oscillator: Experimental results and simple model 超低噪声10ghz双环光电振荡器:实验结果及简单模型
2016 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2016-05-09 DOI: 10.1109/FCS.2016.7546719
O. Lelièvre, V. Crozatier, G. Baili, P. Berger, G. Pillet, D. Dolfi, L. Morvan, F. Goldfarb, F. Bretenaker, O. Llopis
{"title":"Ultra low noise 10 GHz dual loop optoelectronic oscillator: Experimental results and simple model","authors":"O. Lelièvre, V. Crozatier, G. Baili, P. Berger, G. Pillet, D. Dolfi, L. Morvan, F. Goldfarb, F. Bretenaker, O. Llopis","doi":"10.1109/FCS.2016.7546719","DOIUrl":"https://doi.org/10.1109/FCS.2016.7546719","url":null,"abstract":"We present a 10 GHz dual loop optoelectronic oscillator (OEO), with very low phase noise (-144.7 dBc/Hz at 10 kHz) and low spur level (-145 dBc/Hz), despite using short fibers (1 km/100 m). The OEO is designed thanks to a simple model, which shows good agreement both with single and dual loop configurations.","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":"129722375","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
Long-term GPS carrier-phase time transfer noise: A study based on seven GPS receivers at NIST 长期GPS载波相位时传递噪声:基于NIST 7台GPS接收机的研究
2016 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2016-05-09 DOI: 10.1109/FCS.2016.7546777
J. Yao, J. Levine
{"title":"Long-term GPS carrier-phase time transfer noise: A study based on seven GPS receivers at NIST","authors":"J. Yao, J. Levine","doi":"10.1109/FCS.2016.7546777","DOIUrl":"https://doi.org/10.1109/FCS.2016.7546777","url":null,"abstract":"This paper reports a preliminary study of the long-term GPS carrier-phase time transfer noise, based on seven NIST GPS receivers. We find that the difference in carrier-phase time-transfer result using any two GPS receivers over 100 days can change by ~ 0.5 ns (peak-to-peak) in most cases and by ~ 1.3 ns (peak-to-peak) in some extreme cases. This suggests that a more frequent GPS calibration is needed to achieve sub-nanosecond GPS timing accuracy.","PeriodicalId":122928,"journal":{"name":"2016 IEEE International Frequency Control Symposium (IFCS)","volume":"47 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":"115862760","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
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