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Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications最新文献

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Development of minitype long life quartz crystal oscillators 小型长寿命石英晶体振荡器的研制
Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2014-12-29 DOI: 10.1109/SPAWDA.2014.6998561
Wei-ping Zhou, Lin Ye, Qiu-yan Zhang, Lei Niu, Zuo-yu Wang, Xiao-guang Liu
{"title":"Development of minitype long life quartz crystal oscillators","authors":"Wei-ping Zhou, Lin Ye, Qiu-yan Zhang, Lei Niu, Zuo-yu Wang, Xiao-guang Liu","doi":"10.1109/SPAWDA.2014.6998561","DOIUrl":"https://doi.org/10.1109/SPAWDA.2014.6998561","url":null,"abstract":"With the system to an integrated, modularization and long-life development, quartz crystal oscillator miniaturization, long life have become increasingly demanding. We wish to develop a new quartz crystal oscillators without the conductive epoxy to eliminate the change issues of crystal chip bonding material. First, it is required to develop small long life quartz crystal oscillator design, to solve the equivalent resistance and input current issues and to eliminate the change issues of crystal chip bonding material. Then the design is verified through the production of crystal samples and testing - a number of typical crystal frequency oscillators are developed. Compared with the common crystal oscillators the frequency-temperature stability and input current are consistent, and the change issues of crystal chip bonding material-conductive epoxy die has been completely eliminated in the 32 older long life and the minitype long life quartz crystal oscillator technology has been realized.","PeriodicalId":412736,"journal":{"name":"Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"143 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115758379","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
Suppressing the frequency jump in quartz crystal microbalance 抑制石英晶体微天平的跳频
Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2014-12-29 DOI: 10.1109/SPAWDA.2014.6998565
Yannan Han, Wen-qiang Zheng, Dong-lin Su
{"title":"Suppressing the frequency jump in quartz crystal microbalance","authors":"Yannan Han, Wen-qiang Zheng, Dong-lin Su","doi":"10.1109/SPAWDA.2014.6998565","DOIUrl":"https://doi.org/10.1109/SPAWDA.2014.6998565","url":null,"abstract":"Quartz crystal microbalance (QCM) acquires the mass information through measuring the frequency shift. The detection sensitivity can achieve to nano-gram. A type of 15MHz QCM used in space contamination detection appeared the frequency jump when switching the power supply repeatedly, which disabled the measurement function. The analysis was made from quartz resonator and oscillator circuit which deciding the QCM's frequency, and the conclusion was drawn that properly designing the resonator electrodes and the oscillator circuit parameters could suppress the frequency jump. The suppressing methods were carried out on the 15MHz quartz crystal microbalance (QCM), and effectively controlled the frequency jump. Trying the power supply switching test 200 times, the frequency jump didn't appear any more. At the end, a simple method to verify the suppressing effect is provided.","PeriodicalId":412736,"journal":{"name":"Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"151 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116093837","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
Stress concentration due to a functionally graded ring around an elliptic hole in an infinite plate 无限大板上椭圆孔周围功能梯度环的应力集中
Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2014-12-29 DOI: 10.1109/SPAWDA.2014.6998585
Quanquan Yang, C. Gao
{"title":"Stress concentration due to a functionally graded ring around an elliptic hole in an infinite plate","authors":"Quanquan Yang, C. Gao","doi":"10.1109/SPAWDA.2014.6998585","DOIUrl":"https://doi.org/10.1109/SPAWDA.2014.6998585","url":null,"abstract":"This paper is to study the two-dimensional stress distribution of an infinite plate with a functionally graded annular ring around anelliptic hole based on complex variable method. With using the method of piece-wise homogeneous layers, the general solution for the functionally graded ring having normal arbitrary elastic properties is derived when the plate is subjected arbitrary constant loads at infinity, and then numerical results are presented for several special examples. It is found that the existence of the functionally graded annular ring influence obviously the stress distribution around the elliptic hole, and the stress concentration can be effectively reduced by choosing proper change ways of the normal elastic properties and proper thicknesses of the annular ring.","PeriodicalId":412736,"journal":{"name":"Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114266035","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 of a VCO for rubidium atomic frequency standard 铷原子频标压控振荡器的设计
Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2014-12-29 DOI: 10.1109/SPAWDA.2014.6998546
Lei Ji, Liang Tang, Xin-wei Li
{"title":"Design of a VCO for rubidium atomic frequency standard","authors":"Lei Ji, Liang Tang, Xin-wei Li","doi":"10.1109/SPAWDA.2014.6998546","DOIUrl":"https://doi.org/10.1109/SPAWDA.2014.6998546","url":null,"abstract":"The rubidium atomic clock based on coherent population trapping (CPT) has advantages of low power consumption, small size and quick start-up. It is potential to be applied in many fields of science. The rubidium atomic clock requires a microwave signal source whose center frequency is 3.417GHz (half of the rubidium atomic hyperfine energy difference) with the ability to be tuned during a certain frequency range. A transistor with high cut-off frequency and low noise figure is selected in this design to constitute the amplifier circuit. At the emitter of the transistor, a varactor and other components are used to make up the resonance circuit. The circuit parameters are optimized by using the negative resistance analysis method to meet the power and phase noise requirements. Finally, a voltage controlled oscillator (VCO) based on the rubidium atomic frequency standard is designed. The frequency is 3.417GHz, the phase noise is -53dBc/Hz@1kHz, and the output power is about 1.4dBm. By adjusting the reverse DC bias voltage of the varactor between 0V and 2.5V, the output frequency varies about 100MHz.","PeriodicalId":412736,"journal":{"name":"Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115144071","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 temperature on frequency properties of FBAR 温度对FBAR频率特性的影响
Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2014-12-29 DOI: 10.1109/SPAWDA.2014.6998603
Dejin Huang, Ji Wang
{"title":"Effects of temperature on frequency properties of FBAR","authors":"Dejin Huang, Ji Wang","doi":"10.1109/SPAWDA.2014.6998603","DOIUrl":"https://doi.org/10.1109/SPAWDA.2014.6998603","url":null,"abstract":"This paper investigated the effects of temperature on resonance properties of Film Bulk Acoustic Resonator (FBAR) in thickness-stretch mode. Based on the fundamental piezoelastic equations of piezoelectric material, the vibration equation of ideal FBAR under sine excitation voltage is derived. The solution is then obtained by using of the boundary conditions. The series and parallel resonance frequency were presented, and the effects of temperature on resonance frequency, bandwidth, and effective electromechanical coupling coefficient were discussed. A numerical example was presented to show the effects. These results are useful for the improvement of designing FBAR.","PeriodicalId":412736,"journal":{"name":"Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"518 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116244932","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
Resonantly driven piezoelectric micropump with PDMS check valves and compressible space 带PDMS止回阀和可压缩空间的谐振驱动压电微泵
Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2014-12-29 DOI: 10.1109/SPAWDA.2014.6998550
Yu-ting Ma, Xueyang Wang, Jinfeng Zhong, Z. Feng
{"title":"Resonantly driven piezoelectric micropump with PDMS check valves and compressible space","authors":"Yu-ting Ma, Xueyang Wang, Jinfeng Zhong, Z. Feng","doi":"10.1109/SPAWDA.2014.6998550","DOIUrl":"https://doi.org/10.1109/SPAWDA.2014.6998550","url":null,"abstract":"This paper presents a resonantly-driven and high-performing piezoelectric micropump, which is favorable for the fuel delivery system. The micropump consists of a resonance-driven vibrator, two simple polydimethylsioxane (PDMS) check valves and compressible spaces. The PDMS check valve increases the working stability and reduces the leakage rate. The performance of the micropump is significantly improved by the addition of compressible spaces near the check valves. Experimental results demonstrate that the maximum flow rate of 105 ml/min and maximum back pressure of 23 kPa are obtained when the micropump is driven by a sinusoidal voltage of 400 Vpp at 490 Hz. The maximum power consumption is approximately 42 mW at zero back pressure.","PeriodicalId":412736,"journal":{"name":"Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121867117","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
Finite element analysis of circular quartz resonators using scalar differential equation and COMSOL 利用标量微分方程和COMSOL对圆形石英谐振器进行有限元分析
Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2014-12-29 DOI: 10.1109/SPAWDA.2014.6998519
Jun Shi, C. Fan, M. Zhao, Jia-shi Yang
{"title":"Finite element analysis of circular quartz resonators using scalar differential equation and COMSOL","authors":"Jun Shi, C. Fan, M. Zhao, Jia-shi Yang","doi":"10.1109/SPAWDA.2014.6998519","DOIUrl":"https://doi.org/10.1109/SPAWDA.2014.6998519","url":null,"abstract":"We study free vibrations of a circular AT-cut quartz resonator using the two-dimensional scalar differential equation by Tiersten and Smythe in conjunction with COMSOL. Resonant frequencies and mode shapes are obtained and compared with available experimental results as well as available analytical solutions of the scalar equation. The accuracy of various analytical solutions is examined.","PeriodicalId":412736,"journal":{"name":"Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114080795","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
Experimental research on the mechanism of the Kaiser effect in metal 金属中Kaiser效应机理的实验研究
Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2014-12-29 DOI: 10.1109/SPAWDA.2014.6998571
Bin Li, Ying Zhang, Ai-ling Liu, G. Dai
{"title":"Experimental research on the mechanism of the Kaiser effect in metal","authors":"Bin Li, Ying Zhang, Ai-ling Liu, G. Dai","doi":"10.1109/SPAWDA.2014.6998571","DOIUrl":"https://doi.org/10.1109/SPAWDA.2014.6998571","url":null,"abstract":"The paper that is based on the mesoscopic damage evolution of metal explores the mechanism of Kaiser effect. Unidirectional and multidirectional tensile experiments of Q345 material were conducted to reveal the relationship between the internal damage evolution of mesoscopic holes and Kaiser effect. The results show that the forcewill cause the damage corresponding to the direction of force. When the direction of the load changes, the hole evolution direction will change with the change and a new damage will appear again. At this time the memory of Kaiser effect exists no longer. Therefore, Kaiser effect is closely related to the vector of force. As long as either magnitude or direction of force changes, the memory will be affected.","PeriodicalId":412736,"journal":{"name":"Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129758430","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
Vibration characteristics of functionally graded piezoelectric cylindrical transducers 功能梯度压电圆柱形换能器的振动特性
Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2014-12-29 DOI: 10.1109/SPAWDA.2014.6998620
Hui-ming Wang, D. Luo
{"title":"Vibration characteristics of functionally graded piezoelectric cylindrical transducers","authors":"Hui-ming Wang, D. Luo","doi":"10.1109/SPAWDA.2014.6998620","DOIUrl":"https://doi.org/10.1109/SPAWDA.2014.6998620","url":null,"abstract":"An exact solution is developed for the radial vibration characteristics of functionally graded piezoelectric cylindrical transducers. The material properties, such as mass density, elastic, piezoelectric and dielectric constants, are assumed to be the power-law functions of radial position. The material nonhomogeneity index of mass density can be different from that of elastic, piezoelectric and dielectric constants. General solutions are obtained in terms of Bessel functions. The characteristics equations for the resonant and anti-resonant frequencies are derived by employing the obtained general solutions and the boundary conditions. The illustrative examples show that the vibration characteristics of functionally graded piezoelectric cylindrical transducers can be tuned by adjusting the material nonhomogeneity index.","PeriodicalId":412736,"journal":{"name":"Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129475233","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
Research on the GPU implementation of the FDTD method for thetwo-dimensional phononic band structure calculations 研究用GPU实现时域有限差分法进行二维声子带结构的计算
Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2014-12-29 DOI: 10.1109/SPAWDA.2014.6998584
Shilong Chai, Xiao-Xing Su
{"title":"Research on the GPU implementation of the FDTD method for thetwo-dimensional phononic band structure calculations","authors":"Shilong Chai, Xiao-Xing Su","doi":"10.1109/SPAWDA.2014.6998584","DOIUrl":"https://doi.org/10.1109/SPAWDA.2014.6998584","url":null,"abstract":"FDTD (Finite-difference time-domain) method is a commonly used method to compute the phononic crystal band gap. Due to the requirements of calculation precision and numerical stability, FDTD method generally requires a close space grid and smaller time step, when calculating the structure of the larger scale, which consume large amounts of computing resources, lead to the calculation more time-consuming. And based on CUDA (calculation Unified device architecture) multi-threaded parallel computing solution, can effectively applied the FDTD algorithm to the graphics processor (GPU). We present the technical implementation details, at the same time. compared with the traditional CPU efficiency, The results show that with spatial grid density increase, the GPU relative to the CPU to enhance the efficiency of calculation is also becoming distinct. for 3000 * 3000 spatial grid, computing speed compare to CPU can improve even more than 10 times.","PeriodicalId":412736,"journal":{"name":"Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127219729","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
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