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2010 IEEE International Frequency Control Symposium最新文献

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Precise monitoring of ultra low expansion Fabry-Perot cavity length by the use of a stabilized optical frequency comb 通过使用稳定的光学频率梳精确监测超低膨胀法布里-珀罗腔长度
2010 IEEE International Frequency Control Symposium Pub Date : 2010-06-01 DOI: 10.1109/FREQ.2010.5556284
R. Smíd, O. Cíp, Z. Buchta, J. Ježek, B. Mikel, M. Čížek, J. Lazar
{"title":"Precise monitoring of ultra low expansion Fabry-Perot cavity length by the use of a stabilized optical frequency comb","authors":"R. Smíd, O. Cíp, Z. Buchta, J. Ježek, B. Mikel, M. Čížek, J. Lazar","doi":"10.1109/FREQ.2010.5556284","DOIUrl":"https://doi.org/10.1109/FREQ.2010.5556284","url":null,"abstract":"The use of an ultra low expansion cavity plays a crucial role in laser stabilization, and it is essential in atomic or ion clocks. In this work we present a method of mirror distance monitoring in an evacuated Fabry-Perot cavity (FPC) made from an ultra low expansion material (Zerodur expansion class 0). The FPC was placed into a temperature-stabilized stainless steel chamber and the FPC temperature was set to remain close to the point where the expansion coefficient of the cavity material is the lowest. The precise distance of the FPC mirrors in vacuum was indirectly proportional to the optical frequency of a laser. One of the frequency comb component chosen by FBG grating was locked to the FPC of 400 MHz free spectral range. The 100 MHz repetition frequency of the femtosecond laser comb was monitored with counter referenced to a crystal oscillator with short term stability < 10−12 and long term stability locked to a GPS.","PeriodicalId":344989,"journal":{"name":"2010 IEEE International Frequency Control Symposium","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129365256","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: 6
Chemically etched resonant LGS microsensors 化学蚀刻谐振LGS微传感器
2010 IEEE International Frequency Control Symposium Pub Date : 2010-06-01 DOI: 10.1109/FREQ.2010.5556259
G. Douchet, O. Medeira, F. Sthal, T. Leblois
{"title":"Chemically etched resonant LGS microsensors","authors":"G. Douchet, O. Medeira, F. Sthal, T. Leblois","doi":"10.1109/FREQ.2010.5556259","DOIUrl":"https://doi.org/10.1109/FREQ.2010.5556259","url":null,"abstract":"Materials like langasite (LGS), langatate (LGT) or gallium orthophosphate (GaPO4) crystals have higher piezoelectric coefficients and also have a better high-temperature behaviour than quartz crystal. Thus they are worth being considered as a replacement for quartz in applications such as oscillators, piezoelectric accelerometers, microbalances or clocks. Length-extension resonators have already been manufactured using quartz crystal in order to get atomically-resolved imaging by frequency-modulation atomic force microscopy. The goal of this study is to obtain better results with langasite. It has been shown that LGS-crystal microsensors should have a sensitivity three times better than quartz crystal ones. This fact added to the existence of temperature-compensated cuts for the extensional mode of vibration is of prime importance for applications such as microcantilevers for frequency-modulation atomic force microscopes. This paper focuses on the fabrication of Langasite resonators with different cut angles around the temperature-compensated cuts both in length-extension and flexure mode.","PeriodicalId":344989,"journal":{"name":"2010 IEEE International Frequency Control Symposium","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130901250","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
100 MHz oscillator based on a low polarization voltage capacitive Lamé-mode MEMS resonator 基于低极化电压电容式lam<s:1>模MEMS谐振器的100mhz振荡器
2010 IEEE International Frequency Control Symposium Pub Date : 2010-06-01 DOI: 10.1109/FREQ.2010.5556350
É. Colinet, J. Arcamone, A. Niel, E. Lorent, S. Hentz, E. Ollier
{"title":"100 MHz oscillator based on a low polarization voltage capacitive Lamé-mode MEMS resonator","authors":"É. Colinet, J. Arcamone, A. Niel, E. Lorent, S. Hentz, E. Ollier","doi":"10.1109/FREQ.2010.5556350","DOIUrl":"https://doi.org/10.1109/FREQ.2010.5556350","url":null,"abstract":"This paper describes the implementation of a 100 MHz oscillator based on a Lamé-mode MEMS resonator polarized with a low dc bias voltage (< 5 V). Under low vacuum, the MEMS resonator exhibits high quality factors up to 60000 ensuring reasonable performance in terms of measured phase noise: −100 dBc/Hz @ 1kHz from carrier. A specific capacitive actuation/detection scheme ensures an active cancellation of the feedthrough capacitances and facilitates the balance by the rack-level sustaining electronics of the equivalent 50 kΩ motional impedance (on resonance) of the 100 MHz resonator.","PeriodicalId":344989,"journal":{"name":"2010 IEEE International Frequency Control Symposium","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130322365","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
A study on the aging of ultra-thin Palladium films on SAW hydrogen gas sensors SAW氢气传感器上超薄钯膜的老化研究
2010 IEEE International Frequency Control Symposium Pub Date : 2010-06-01 DOI: 10.1109/FREQ.2010.5556333
B. Fisher, D. Malocha
{"title":"A study on the aging of ultra-thin Palladium films on SAW hydrogen gas sensors","authors":"B. Fisher, D. Malocha","doi":"10.1109/FREQ.2010.5556333","DOIUrl":"https://doi.org/10.1109/FREQ.2010.5556333","url":null,"abstract":"Traditionally, low-powered, room temperature sensing of gaseous hydrogen (H2) is difficult. With renewed interest in H2 as a source of energy, there is a need for reliable, energy-efficient sensors. A potential solution can be found in using surface acoustic wave (SAW) devices, which have been implemented as passive, wireless RFID tag-sensors. Thus, in concept, it is advantageous to develop a SAW device with H2 sensing capabilities. Prior experiments have successfully demonstrated a passive SAW-based H2 gas sensor by placing an ultra-thin Palladium (Pd) film (<50Å) in the propagation path [1–3]. These sensors have an instantaneous response and a significant fractional change in SAW propagation loss; however, the lifetime of these sensors are still unknown. Hence, the objective of this study was to examine the influence of aging of ultra-thin Pd films on the usable life of passive SAW H2 gas sensors.","PeriodicalId":344989,"journal":{"name":"2010 IEEE International Frequency Control Symposium","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129848721","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
Single-ended-to-differential and differential-to-differential channel-select filters based on piezoelectric AlN contour-mode MEMS resonators 基于压电AlN轮廓模MEMS谐振器的单端对差分和差分对差分通道选择滤波器
2010 IEEE International Frequency Control Symposium Pub Date : 2010-06-01 DOI: 10.1109/FREQ.2010.5556383
C. Zuo, G. Piazza
{"title":"Single-ended-to-differential and differential-to-differential channel-select filters based on piezoelectric AlN contour-mode MEMS resonators","authors":"C. Zuo, G. Piazza","doi":"10.1109/FREQ.2010.5556383","DOIUrl":"https://doi.org/10.1109/FREQ.2010.5556383","url":null,"abstract":"This paper reports on the first demonstration of single-ended-to-differential and differential-to-differential (S2D and D2D) channel-select filters based on single-layer (SL) and dual-layer-stacked (DLS) AlN contour-mode MEMS resonators. The key filter performances in terms of insertion loss (as low as 1.4 dB), operating frequency (250–1280 MHz), and out-of-band rejection (up to 60 dB) constitute a significant advancement over all other state-of-the-art RF MEMS technologies. The fabrication process, namely stacking of two piezoelectric AlN layers (600 nm each) and three Pt electrode layers (100 nm each), is fully compatible with the previously demonstrated AlN RF MEMS switch process (also post-CMOS compatible), which makes it possible to implement multi-frequency switchable filter banks on a single chip. The S2D configuration is also able to combine the balun, filter, and impedance transformer functions in a single MEMS structure and only takes on a very small form factor (60×200 µm). These unique features will potentially revolutionize the field of RF and microwave IC design by enabling MEMS-IC co-design and the development of unconventional and low-power RF architectures.","PeriodicalId":344989,"journal":{"name":"2010 IEEE International Frequency Control Symposium","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129931158","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: 6
Direct parameter extraction in capacitively transduced micromechanical resonators using the anti-resonance 电容式微机械谐振器的反共振直接参数提取
2010 IEEE International Frequency Control Symposium Pub Date : 2010-06-01 DOI: 10.1109/FREQ.2010.5556357
Joshua E-Y Lee, A. Seshia
{"title":"Direct parameter extraction in capacitively transduced micromechanical resonators using the anti-resonance","authors":"Joshua E-Y Lee, A. Seshia","doi":"10.1109/FREQ.2010.5556357","DOIUrl":"https://doi.org/10.1109/FREQ.2010.5556357","url":null,"abstract":"This paper presents a method for the fast and direct extraction of model parameters for capacitive MEMS resonators from their measured transmission response such as quality factor, resonant frequency, and motional resistance. We show that these parameters may be extracted without having to first de-embed the resonator motional current from the feedthrough. The series and parallel resonances from the measured electrical transmission are used to determine the MEMS resonator circuit parameters. The theoretical basis for the method is elucidated by using both the Nyquist and susceptance frequency response plots, and applicable in the limit where CF > CmQ; commonly the case when characterizing MEMS resonators at RF. The method is then applied to the measured electrical transmission for capacitively transduced MEMS resonators, and compared against parameters obtained using a Lorentzian fit to the measured response. Close agreement between the two methods is reported herein.","PeriodicalId":344989,"journal":{"name":"2010 IEEE International Frequency Control Symposium","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117097680","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
High spectral purity oscillator at 40 GHz: Design using air-dielectric cavity 40 GHz高光谱纯度振荡器:采用空气介质腔的设计
2010 IEEE International Frequency Control Symposium Pub Date : 2010-06-01 DOI: 10.1109/FREQ.2010.5556293
A. Hati, C. Nelson, B. Riddle, D. Howe
{"title":"High spectral purity oscillator at 40 GHz: Design using air-dielectric cavity","authors":"A. Hati, C. Nelson, B. Riddle, D. Howe","doi":"10.1109/FREQ.2010.5556293","DOIUrl":"https://doi.org/10.1109/FREQ.2010.5556293","url":null,"abstract":"We describe the design of a low-phase modulated (PM) noise 40 GHz oscillator that uses a conventional air-dielectric cavity resonator as a frequency discriminator to clean up the PM noise of a commercial 10 GHz dielectric resonator oscillator (DRO) multiplied by four. The main features of this design incorporate (1) unloaded cavity quality factor (Q) of 30,000, (2) high coupling coefficient, (3) large carrier suppression by use of interferometric signal processing, (4) large operating signal power of approximately 1 Watt (W), and (5) relatively small size.","PeriodicalId":344989,"journal":{"name":"2010 IEEE International Frequency Control Symposium","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122160355","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
Atacama Large Millimeter Array photonic local oscillator: femtosecond-level synchronization for radio astronomy 阿塔卡马大型毫米波阵列光子本地振荡器:射电天文学飞秒级同步
2010 IEEE International Frequency Control Symposium Pub Date : 2010-06-01 DOI: 10.1109/FREQ.2010.5556263
B. Shillue
{"title":"Atacama Large Millimeter Array photonic local oscillator: femtosecond-level synchronization for radio astronomy","authors":"B. Shillue","doi":"10.1109/FREQ.2010.5556263","DOIUrl":"https://doi.org/10.1109/FREQ.2010.5556263","url":null,"abstract":"The ALMA Photonic LO system consists of a unique combination of a widely tunable and low-phase-noise millimeter-wave LO reference transmission, combined with a precise round-trip phase correction system based on an optical interferometer. The first installation of the system is now in place and supporting the initial phase of scientific commissioning of the telescope.","PeriodicalId":344989,"journal":{"name":"2010 IEEE International Frequency Control Symposium","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114404365","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
Development and characterization of biodegradable conductive polymers for the next generation of RF bio-resonators 用于下一代射频生物谐振器的可生物降解导电聚合物的开发和表征
2010 IEEE International Frequency Control Symposium Pub Date : 2010-06-01 DOI: 10.1109/FREQ.2010.5556332
C. Boutry, Wei Sun, Tobias Strunz, Hengky Chandrahalim, C. Hierold
{"title":"Development and characterization of biodegradable conductive polymers for the next generation of RF bio-resonators","authors":"C. Boutry, Wei Sun, Tobias Strunz, Hengky Chandrahalim, C. Hierold","doi":"10.1109/FREQ.2010.5556332","DOIUrl":"https://doi.org/10.1109/FREQ.2010.5556332","url":null,"abstract":"The objective of this research is to develop a completely polymeric and biodegradable RF driven RLC resonator circuit. New polymer composites are fabricated and characterized: they consist on conductive polymer nanoparticles (polypyrrole PPy) embedded in a biodegradable polymer matrix (both polylactide PLLA and polycaprolactone PCL are under investigation). The influence of PPy content and polymerization conditions (temperature, atmosphere, additional doping agent) on the resistivity are evaluated. A strong decrease of the resistivity is observed for composites containing more than 12% and 6% of PPy for PLLA/PPy and PCL/PPy, respectively. Resistivities of 0.0043Ω.m (PLLA/PPy39%) and 0.0016Ω.m (PCL/PPy39%) are achieved. A Matlab modelling and HFSS simulation of the RLC resonator performances based on the measured material properties is performed. The simulation results validate the use of these composites to successfully fabricate RLC resonators.","PeriodicalId":344989,"journal":{"name":"2010 IEEE International Frequency Control Symposium","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126234643","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
LiNbO3 Film Bulk Acoustic Resonator LiNbO3薄膜体声谐振器
2010 IEEE International Frequency Control Symposium Pub Date : 2010-06-01 DOI: 10.1109/FREQ.2010.5556245
M. Pijolat, S. Loubriat, D. Mercier, A. Reinhardt, E. Defay, C. Deguet, M. Aid, S. Queste, S. Ballandras
{"title":"LiNbO3 Film Bulk Acoustic Resonator","authors":"M. Pijolat, S. Loubriat, D. Mercier, A. Reinhardt, E. Defay, C. Deguet, M. Aid, S. Queste, S. Ballandras","doi":"10.1109/FREQ.2010.5556245","DOIUrl":"https://doi.org/10.1109/FREQ.2010.5556245","url":null,"abstract":"As layer transfer techniques have been notably improved these passed years, lithium niobate (LiNbO3) appears as a candidate for the next generation of ultra wide band Radio Frequency (RF) filters. Depending on the crystalline orientation, LiNbO3 can achieve electromechanical coupling factors Kt2 more than 6 times larger than those of sputtered aluminium nitride films. In this paper, a process based on direct bonding, grinding, polishing and Deep Reactive Ion Etching (DRIE) is proposed to fabricate a single crystal LiNbO3 Film Bulk Acoustic Resonator (FBAR). From the fabricated test vehicles Kt2 of 45% is measured confirming the values predicted by theoretical computations.","PeriodicalId":344989,"journal":{"name":"2010 IEEE International Frequency Control Symposium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130066943","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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