2008 IEEE International Frequency Control Symposium最新文献_第9页

Characterizing the impact of time error on general systems 描述时间误差对一般系统的影响

2008 IEEE International Frequency Control Symposium Pub Date : 2008-05-19 DOI: 10.1109/FREQ.2008.4623086

Victor S. Reinhardt

{"title":"Characterizing the impact of time error on general systems","authors":"Victor S. Reinhardt","doi":"10.1109/FREQ.2008.4623086","DOIUrl":"https://doi.org/10.1109/FREQ.2008.4623086","url":null,"abstract":"Time error x(t) impacts the performance of general systems principally by generating multiplicative signal error (ME) or its short term manifestation multiplicative noise (MN). In this paper, we examine how to characterize x(t) induced ME and MN, especially in the presence of negative power law (negp) x(t) noise, that is, noise with a power spectral density (PSD) Lx(f) prop fp for p<0. In the paper, it is shown that one can spectrally characterize the MN as Ldeltav(fg,f) the dual frequency Loeve spectrum of the x(t) induced ME deltav(t) = v(t+x(t)) - v(t), where v(t) is the ideal generated or processed signal. It is also shown that Ldeltav(fg,f) can be written as the convolution of Lv(fg,f) the Loeve spectrum of v(t) with the spectrum of the x(t) generating the MN. When v(t) is broadband, it is further shown that the evaluation of Ldeltav(fg,f) is problematic in the presence of neg-p x(t) noise, if one naively interprets the x-spectrum in the convolution merely as LTB(f) the raw x-PSD of a time source or timebase (TBs) used to generate or process the signal. The paper then demonstrates that this problem is mitigated in most systems because such a neg-p LTB(f) is naturally high-pass (HP) filtered in the convolution due to two effects. The first of these HP effects is generated by topological structures such as phase lock loops and delay mismatches. The second HP effect arises when one properly defines the x-PSD for the MN convolution as that of the residual TB error after removing an estimate of the long term causal x(t) behavior, not that of the total TB error. It is finally shown that such causal removal guarantees the convergence of the MN convolution for any order of neg-p TB noise, if an appropriate causal estimation model is chosen.","PeriodicalId":220442,"journal":{"name":"2008 IEEE International Frequency Control Symposium","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125393438","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

Dual band filter based on film bulk acoustic resonator 基于薄膜体声谐振器的双带滤波器

2008 IEEE International Frequency Control Symposium Pub Date : 2008-05-19 DOI: 10.1109/FREQ.2008.4622988

R. Lin, Ying-Chung Chen, K. Kao, D. Cheng, Chih-Ming Wang, Chien-Chuan Cheng

{"title":"Dual band filter based on film bulk acoustic resonator","authors":"R. Lin, Ying-Chung Chen, K. Kao, D. Cheng, Chih-Ming Wang, Chien-Chuan Cheng","doi":"10.1109/FREQ.2008.4622988","DOIUrl":"https://doi.org/10.1109/FREQ.2008.4622988","url":null,"abstract":"In this study, platinum (Pt) and zinc oxide (ZnO) had been adopted as electrode and piezoelectric layer of FBAR resonator. There are several types of filters, such as ladder-type, lattice-type and stacked couple filter, constructed from the FBAR resonator. The T-ladder type filter had been elected because of its high quality and simple fabrication processes. The pass-band width of filter is controlled by the mass loading on the specific resonator. The resonant frequency of FBAR is decided by the thickness of the piezoelectric layer. Due to the off-axis deposition, a dual mode resonance phenomenon is appeared. The precise mass loading is critical for the pass-band competition of longitude mode and shear mode in dual band filter. The frequency response is measured using an HP8720 network analyzer and a CASCADE probe station. The center frequency, 3-dB bandwidth, insertion loss and band rejection of longitude mode are 2353.125 MHz, 76.2 MHZ, -4.8066 dB and 7.1308 dB respectively. The center frequency, 3-dB bandwidth, insertion loss and band rejection of shear mode are 1044.375 MHz, 22.975 MHZ, -8.8314 dB and 1.5 dB respectively. The device has achieved and has a chance to apply in dual band wireless communication system.","PeriodicalId":220442,"journal":{"name":"2008 IEEE International Frequency Control Symposium","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126653708","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

A frequency stabilized tunable pulsed quantum cascade laser 频率稳定可调谐脉冲量子级联激光器

2008 IEEE International Frequency Control Symposium Pub Date : 2008-05-19 DOI: 10.1109/FREQ.2008.4622971

M. Taslakov, V. Simeonov, H. E. van den Bergh

引用次数: 1

Improved sensitivity of TSM sensors using a composite Sensor-Actuator Hybrid Structure (SAHS) 基于SAHS的TSM传感器灵敏度提高研究

2008 IEEE International Frequency Control Symposium Pub Date : 2008-05-19 DOI: 10.1109/FREQ.2008.4622953

J. Desa, Qiliang Zhang, E. Ergezen, R. Lec

{"title":"Improved sensitivity of TSM sensors using a composite Sensor-Actuator Hybrid Structure (SAHS)","authors":"J. Desa, Qiliang Zhang, E. Ergezen, R. Lec","doi":"10.1109/FREQ.2008.4622953","DOIUrl":"https://doi.org/10.1109/FREQ.2008.4622953","url":null,"abstract":"Thickness shear mode (TSM) sensors are widely employed as biosensors. One of the most important operational parameters of biosensors is their sensitivity. Due to the fact that TSM sensors have maximum sensitivity at the center of the sensing electrode, there has been increased research efforts focused on the development of techniques for controlling the distribution of the measurand over the sensor surface. This paper discusses the improvement of TSM sensor performance via the construction of a simple, inexpensive, sensor-actuator hybrid structure (SAHS). The SAHS consists of a piezoelectric ceramic radial mode, ring-shaped, actuator affixed to a TSM AT-cut quartz sensor. The ring actuator operating at a given frequency generates a specific force-pattern over the TSM sensor surface. A finite element analysis (FEA) is used to simulate various force patterns, identify the appropriate ones and determine the corresponding driving frequencies of the ring actuator. The simulation results show that the SAHS is capable of concentrating micron and sub-micron sized particles to high sensitivity locations at and around the center of the sensor. A structure incorporating a ring-actuator (6.35 times 2.4 times 1 mm) with a TSM sensor, operated at 100 MHz, has been experimentally tested with micrometer sized inorganic particles, namely, polystyrene and silica, and biological bacterial spores, Escherichia Coli. The response of the sensor, to particle loading, has been improved by means of manipulation and clustering of particles. Furthermore, particle distribution over the SAHS was recorded and was consistent with the FEA simulation results.","PeriodicalId":220442,"journal":{"name":"2008 IEEE International Frequency Control Symposium","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123892448","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

A novel structure of AlN/SiO2/Si, AlN/Si SAW filter AlN/SiO2/Si、AlN/Si SAW滤波器结构新颖

2008 IEEE International Frequency Control Symposium Pub Date : 2008-05-19 DOI: 10.1109/FREQ.2008.4623070

T. Hoang, P. Rey, M. Vaudaine, P. Robert, P. Benech

引用次数: 8

Development of a biomedical tissue differentiation system using piezoelectric actuators 压电致动器生物医学组织分化系统的研制

2008 IEEE International Frequency Control Symposium Pub Date : 2008-05-19 DOI: 10.1109/FREQ.2008.4622963

D. O. Uribe, R. Stroop, T. Hemsel, J. Wallaschek

引用次数: 8

High temperature piezoelectric single crystal ReCa4O(BO3)3 for sensors 传感器用高温压电单晶reca40o (BO3)3

2008 IEEE International Frequency Control Symposium Pub Date : 2008-05-19 DOI: 10.1109/FREQ.2008.4623011

Shujun Zhang, T. Shrout, Y. Fei, B. Chai, E. Frantz, D. Snyder

引用次数: 9

Effect of Mo layer on performance of AlN/Si SAW filter Mo层对AlN/Si SAW滤波器性能的影响

2008 IEEE International Frequency Control Symposium Pub Date : 2008-05-19 DOI: 10.1109/FREQ.2008.4623073

T. Hoang, P. Rey, M. Vaudaine, P. Robert, P. Benech

引用次数: 6

A new angular velocity sensor using the temperature stable AT-cut quartz 采用温度稳定at切割石英的新型角速度传感器

2008 IEEE International Frequency Control Symposium Pub Date : 2008-05-19 DOI: 10.1109/FREQ.2008.4622964

Y. Yong, M. Patel

{"title":"A new angular velocity sensor using the temperature stable AT-cut quartz","authors":"Y. Yong, M. Patel","doi":"10.1109/FREQ.2008.4622964","DOIUrl":"https://doi.org/10.1109/FREQ.2008.4622964","url":null,"abstract":"The feasibility of a new angular velocity sensor using the temperature stable AT-cut quartz was presented. The sensor consisted of one pair of electrodes for driving the fundamental thickness shear mode, and another pair of electrodes for sensing the angular velocity. Two tines extended outward from resonator, and in the plane of the plate. The tines were designed to be sensitive to angular velocity of the resonator. The Coriolis body force caused by the cross product of the angular velocity with the linear momentum of the vibrating tines changes the their mode shapes that in turn perturbed the thickness shear mode, and changed the voltage at the sensing electrodes. A vibratory gyroscope with a trapped energy thickness mode as the main driving mode offers good improvements in terms of frequency stability and less dependence on the mounting supports and lead installation of the sensing element. Since the AT-cut resonators were known to have good f-T curves and long term aging, such a gyroscope would have the advantages of a stable quartz AT-cut resonator. Results for two angular velocity sensors were presented: (1) a 5 MHz sensor with a sensitivity of 5.8 mV/deg./s angular velocity about the X-axis, and (2) a 37 MHz sensor with a sensitivity of 0.38 mV/deg./s angular velocity about the Z-axis.","PeriodicalId":220442,"journal":{"name":"2008 IEEE International Frequency Control Symposium","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127615874","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

Synthesis of low-spur GHz sinusoids using a 4-bit D/A converter 利用4位D/ a转换器合成低杂散GHz正弦波

2008 IEEE International Frequency Control Symposium Pub Date : 2008-05-19 DOI: 10.1109/FREQ.2008.4623099

D. Comer, D. Korth

引用次数: 4