2012 IEEE International Frequency Control Symposium Proceedings最新文献_第3页

New method of multy-mode oscillations control in crystal resonators 晶体谐振器多模振荡控制新方法

2012 IEEE International Frequency Control Symposium Proceedings Pub Date : 2012-05-21 DOI: 10.1109/FCS.2012.6243743

A. Lepetaev, A. Kosykh

引用次数: 3

Tunable photonic microwave oscillator self-locked by polarization-rotated optical feedback 偏振旋转光反馈自锁的可调谐光子微波振荡器

2012 IEEE International Frequency Control Symposium Proceedings Pub Date : 2012-05-21 DOI: 10.1109/FCS.2012.6243728

T. Simpson, Jia-Ming Liu, M. Almulla, N. Usechak, V. Kovanis

引用次数: 8

Wireless langasite resonator as a force sensor 无线langasite谐振器作为力传感器

2012 IEEE International Frequency Control Symposium Proceedings Pub Date : 2012-05-21 DOI: 10.1109/FCS.2012.6243605

Haifeng Zhang, B. Montz, Tinghui Fan, J. Kosinski

{"title":"Wireless langasite resonator as a force sensor","authors":"Haifeng Zhang, B. Montz, Tinghui Fan, J. Kosinski","doi":"10.1109/FCS.2012.6243605","DOIUrl":"https://doi.org/10.1109/FCS.2012.6243605","url":null,"abstract":"Langasite (La3Ga5SiO14), a promising new piezoelectric crystal, has attracted interest from piezoelectric communities around the world for its superior behavior such as having a high Q, stable frequency-temperature behavior, high electrical-mechanical coupling coefficient and no phase transition to a high temperature form. The combination of these superior properties makes it ideal for high temperature sensor applications. This article presents a system for a wireless langasite resonator force sensor. The system uses frequency conversion techniques to convert the sensor's ultrasonic signal to a microwave signal in order to transmit the signal wirelessly without digitization. The sensor is able to transmit the ultrasound signal by using passive components that modulate and transmit the full waveform. A specially designed loading device is constructed in order to measure the frequency shifts of the langasite resonator caused by a pair of diametric forces. The wireless transmission system was tested using a doubly rotated plano-plano langasite resonator (YXlw)θ/Φ 45°/85° operating on its third overtone (6.304844 MHz) as its sensor. Wireless system data obtained using a network analyzer was compared with similar wired system data. The force-frequency effect at different azimuth angles was measured for both wired and wireless configurations as well. The result shows a good agreement between the wired and wireless signals. The wireless langasite resonator force sensing system has a large variety of possible applications, and the wireless transmission system has the potential to be used with other types of sensors as well.","PeriodicalId":256670,"journal":{"name":"2012 IEEE International Frequency Control Symposium Proceedings","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132816869","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

Coherent correlator multi-sensor receiver 相干相关多传感器接收机

2012 IEEE International Frequency Control Symposium Proceedings Pub Date : 2012-05-21 DOI: 10.1109/FCS.2012.6243637

D. Malocha, M. Gallagher

引用次数: 9

Stimulated Rayleigh scattering and amplitude-to-phase conversion as a source of length-dependent phase noise in OEOs 受激瑞利散射和幅相转换作为oeo中长度相关相位噪声的来源

2012 IEEE International Frequency Control Symposium Proceedings Pub Date : 2012-05-21 DOI: 10.1109/FCS.2012.6243594

A. Docherty, C. Menyuk, O. Okusaga, Weimin Zhou

引用次数: 7

A high accurate Rb atomic clock with the compensated techniques 采用补偿技术的高精度Rb原子钟

2012 IEEE International Frequency Control Symposium Proceedings Pub Date : 2012-05-21 DOI: 10.1109/FCS.2012.6243589

Yuanhong Cao, Lin Yang, Miao Liu, Ning Wang, Runchang Du, Chun Li

{"title":"A high accurate Rb atomic clock with the compensated techniques","authors":"Yuanhong Cao, Lin Yang, Miao Liu, Ning Wang, Runchang Du, Chun Li","doi":"10.1109/FCS.2012.6243589","DOIUrl":"https://doi.org/10.1109/FCS.2012.6243589","url":null,"abstract":"Coefficient is one of the main factors which results in Rb clock to be as second frequency standard. Coefficient is from frequency shift mechanisms because of RF power, intensity of lamp light and collision between atoms in absorption cell. However, Rb clock has many advantages in Power dissipation, dimension and cost in comparison with H-maser and Cs beam. This paper shows a traditional Rubidium atomic clock with high frequency accuracy by 10 folders than ordinary Rb products while compensated techniques was added into the Rb clock. The compensated techniques are consisted of three steps. The first is dynamically regulating work temperature of lamp and cavity by the baseplate temperature; the second is taking 6.8GHz multiplier circuits with auto temperature compensation function. The final is employing digital embedded software in ADC, DAC and MCU to definitely regulate the frequency output by high order fitted cure. By the compensations, the coefficients 2E-11 below is realized within the range of -10~60°C per day. This Rb clock can be qualified to specifications of timing instruments in next generation Telecom.","PeriodicalId":256670,"journal":{"name":"2012 IEEE International Frequency Control Symposium Proceedings","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124534933","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

Thermally-actuated and piezoresistively-sensed CMOS-MEMS resonator array using differential-mode operation 采用差分模式操作的热驱动和压阻感测CMOS-MEMS谐振器阵列

2012 IEEE International Frequency Control Symposium Proceedings Pub Date : 2012-05-21 DOI: 10.1109/FCS.2012.6243711

Cheng-Chi Chen, Ming-Huang Li, Wen-Chien Chen, Huan-Tse Yu, Sheng-Shian Li

引用次数: 9

Optoelectronic oscillator based on fiber ring resonator: Overall system optimization and phase noise reduction 基于光纤环形谐振腔的光电振荡器:系统整体优化和相位降噪

2012 IEEE International Frequency Control Symposium Proceedings Pub Date : 2012-05-21 DOI: 10.1109/FCS.2012.6243650

K. Saleh, P. Merrer, O. Llopis, G. Cibiel

引用次数: 23

A real-time 32.768-kHz clock oscillator using a 0.0154-mm2 micromechanical resonator frequency-setting element 使用0.0154 mm2微机械谐振器频率设定元件的实时32.768 khz时钟振荡器

2012 IEEE International Frequency Control Symposium Proceedings Pub Date : 2012-05-21 DOI: 10.1109/FCS.2012.6243740

H. G. Barrow, T. Naing, R. Schneider, T. Rocheleau, V. Yeh, Z. Ren, C. Nguyen

{"title":"A real-time 32.768-kHz clock oscillator using a 0.0154-mm2 micromechanical resonator frequency-setting element","authors":"H. G. Barrow, T. Naing, R. Schneider, T. Rocheleau, V. Yeh, Z. Ren, C. Nguyen","doi":"10.1109/FCS.2012.6243740","DOIUrl":"https://doi.org/10.1109/FCS.2012.6243740","url":null,"abstract":"A capacitive-comb transduced micromechanical resonator using aggressive lithography to occupy only 0.0154-mm2 of die area has been combined via bond-wiring with a custom ASIC sustaining amplifier and a supply voltage of only 1.65V to realize a 32.768-kHz real-time clock oscillator more than 100× smaller by area than miniaturized quartz crystal implementations and at least 4× smaller than other MEMS-based approaches, including those using piezoelectric material. The key to achieving such large reductions in size is the enormous rate at which scaling improves the performance of capacitive-comb transduced folded-beam micromechanical resonators, for which scaling of lateral dimensions by a factor S provides an S2× reduction in both motional resistance and footprint for a given resonance frequency. This is a very strong dependency that raises eyebrows, since the size of the frequency-setting tank element may soon become the most important attribute governing cost in a potential MEMS-based or otherwise batch-fabricated 32.768-kHz timing oscillator market. In addition, unlike quartz counterparts, the size reduction demonstrated here actually reduces power consumption, allowing this oscillator to operate with only 2.1μW of DC power.","PeriodicalId":256670,"journal":{"name":"2012 IEEE International Frequency Control Symposium Proceedings","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124495151","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: 29

VHF CMOS-MEMS oxide resonators with Q > 10,000 Q > 10000的甚高频CMOS-MEMS氧化物谐振器

2012 IEEE International Frequency Control Symposium Proceedings Pub Date : 2012-05-21 DOI: 10.1109/FCS.2012.6243706

Wen-Chien Chen, W. Fang, Sheng-Shian Li

{"title":"VHF CMOS-MEMS oxide resonators with Q > 10,000","authors":"Wen-Chien Chen, W. Fang, Sheng-Shian Li","doi":"10.1109/FCS.2012.6243706","DOIUrl":"https://doi.org/10.1109/FCS.2012.6243706","url":null,"abstract":"A fully differential CMOS-MEMS oxide resonator fabricated using 0.18 μm CMOS-MEMS platform via metal wet-etching post process has been demonstrated with Q >; 10,000, first time ever in any CMOS-MEMS resonators, and more than 25 dB signal-to-feedthrough ratio at 47.9 MHz. Key to attaining such performance attributes to (1) the bulk-mode vibration to enable exceptional Q and much higher frequencies and (2) the oxide-rich structure with embedded metal electrodes for capacitive transduction, where SiO2 offers better mechanical properties than metals to minimize intrinsic energy loss and where flexible electrical routing facilitates fully differential configuration to suppress capacitive feedthroughs. In addition, a previously developed metal wet-etching technique capable of releasing large device areas has been successfully transferred from 0.35 μm 2-Poly-4-Metal (2P4M) CMOS process to a new 0.18 μm 1-Poly-6-Metal (1P6M) technology node, therefore greatly lowering the motional impedance of the capacitively-transduced resonators due to smaller electrode-to-resonator gap spacing and larger transduction areas. This technology paves a way to realize fully-integrated CMOS-MEMS oscillators and filters which might benefit future single-chip transceivers for wireless communications.","PeriodicalId":256670,"journal":{"name":"2012 IEEE International Frequency Control Symposium Proceedings","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124605335","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: 23