Download or read book Modeling and Verification of Wedge shaped Bulk Acoustic Wave Resonators written by Zaiki Awang and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Trapping Modeling in Bulk Acoustic Wave Resonators written by Gonzalo Augusto Mariano and published by . This book was released on 1984 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thin Film Bulk Acoustic Wave Devices written by Tuomas Pensala and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Thin film bulk acoustic wave (BAW) resonators and filters operating in the GHz range are used in mobile phones for the most demanding filtering applications and complement the surface acoustic wave (SAW) based filters. Their main advantages are small size and high performance at frequencies above 2 GHz. This work concentrates on the characterization, performance optimization, and modelling techniques of thin film BAW devices. Laser interferometric vibration measurements together with plate wave dispersion modeling are used to extract the full set of elastic material parameters for sputter deposited ZnO, demonstrating a method for obtaining material data needed for accurate simulation of the devices. The effectiveness of the acoustic interference reflector used to isolate the vibration from the substrate is studied by 1-D modeling, 2-D finite element method and by electrical and laser interferometric measurements. It is found that the Q-value of reflector-based BAW resonators operating at 2 GHz is limited to approximately 2000 by mechanisms other than leakage through the reflector. Suppression of spurious resonances in ZnO resonators is studied in depth by modeling and measurements. It is verified that the approximate mode orthogonality is behind the suppression in boundary frame type ZnO devices operating in the piston mode, but also another narrow band mode suppression mechanism is found. A plate wave dispersion based 2-D simulation scheme for laterally acoustically coupled BAW resonator filters is developed and employed in designing of experimental devices, which show both good agreement with the model predictions and a remarkable 4.9 % relative bandwidth.
Download or read book On Universal Modeling of the Bulk Acoustic Wave Devices written by Boris Sveshnikov and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: On Universal Modeling of the Bulk Acoustic Wave Devices.
Download or read book Special Issue on Modeling Optimization and Design of Surface and Bulk Acoustic Wave Devices written by William D. O'Brien and published by . This book was released on 2001 with total page 319 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis and Modeling of Surface acoustic Wave Resonators written by Julius Koskela and published by . This book was released on 2000 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Analysis and Design of Film Bulk Acoustic Wave Resonators written by 戴國圓 and published by . This book was released on 2005 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Designing Bulk Acoustic Wave Resonators for Parametric Amplification of Spin Waves written by Pratim Chowdhury and published by . This book was released on 2014 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spintronics is an emerging field of research dealing with devices that can potentially exploit the additional degree of freedom provided by the electron spin along with or instead of the conventional electronic charge. One of the most promising aspects of spintronics is the potential use of magnetostatic spin waves as information carriers in logic devices, where information is encoded in the electron spin. A major obstacle in making this a practically viable alternative to conventional electronics is the very large intrinsic spin wave damping in most known magnetic materials. In this work, we propose a new technique of parametrically amplifying spin waves by means of acoustic resonators. An equivalent electrical model of an acoustic resonator was developed to efficiently design the acoustic resonators for the desired frequency ranges. Backward volume magnetostatic spin waves were measured in Yttrium Iron Garnet films at frequencies of 1.7 GHz or higher, requiring acoustic resonators to be designed for at least 3.4 GHz or higher for parametric amplification. Acoustic resonators with resonance frequency of 4 GHz were fabricated.
Download or read book Investigation of Spurious Waves in Thin film Bulk Acoustic Wave Resonators written by Wenxia Yang and published by . This book was released on 2013 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Temperature Compensation of Solidly Mounted Bulk Acoustic Wave Resonators written by Mohamed Abd Allah and published by . This book was released on 2010 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study on the Origin of 1 f in Bulk Acoustic Wave Resonators written by Santunu Ghosh and published by . This book was released on 2014 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since a few decades, frequency control technology has been at the heart of modern day electronics due to its huge areaof applications in communication systems, computers, navigation systems or military defense. Frequency controldevices provide high frequency stabilities and spectral purities in the short term domain. However, improvement of theperformance of these devices, in terms of frequency stability, remains a big challenge for researchers. Reducing noise inorder to increase the short term stability and avoid unwanted switching between channels is thus very desirable. It iscommonly admitted that the fundamental limitation to this short-term stability is due to flicker frequency noise in theresonators. In this manuscript, a first chapter recalls some basic facts about acoustic, crystallography and definitions oftime and frequency domain needed to explore ultra-stable resonators and oscillators. The second chapter is devoted to asummary of the literature on flicker frequency noise. Then, the third chapter concerns our studies on Handel's quantum1/f noise model, which although criticized by many, is still the only one that provides an estimation of the flooramplitude of 1/f noise that is not invalidated by experimental data. In the fourth chapter, another approach, based on thefluctuation-dissipation theorem, is used in order to put numerical constraints on a model of 1/f noise caused by aninternal (or structural) dissipation proportional to the amplitude and not to the speed. The last chapter is devoted toexperimental results. An ultra-stable resonator used during this study is described. Phase noise measurements on severalbatches of resonators are given. Measurements of resonator parameters have been done at low temperature in order tocorrelate them with noise results. Another approach with a procedure that use transient pseudo periodic oscillations andput to their limits the capacities of presently available digital oscilloscopes, is presented, in order to assess rapidly thequality of various resonators. Finally, conclusions and perspectives are given.
Download or read book Design and Fabrication of Bulk Acoustic Wave Resonator for Wireless Applications written by Guntae Kim and published by . This book was released on 2002 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bulk Acoustic Wave Resonators and Its Application to Microwave Devices written by Jordi Verdú Tirado and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tunable Bulk Acoustic Wave Resonators Based on BaxSr1 xTiO3 Thin Films written by John Berge and published by . This book was released on 2009 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book In liquid Bulk Acoustic Wave Resonators for Biosensing Applications written by Girish Rughoobur and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reflector Stack Optimization for Bulk Acoustic Wave Resonators written by Sumy Jose and published by . This book was released on 2011 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Acoustic Wave and Electromechanical Resonators written by Humberto Campanella and published by . This book was released on 2010 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt:
