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Dissertations / Theses on the topic 'Acoustic resonator'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Thorvaldsson, Thor. "Design and analysis of surface acoustic wave resonators and resonator filters /." [S.l.] : [s.n.], 1988. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=8471.

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2

Hay, Robert Russell. "Digitally-tunable surface acoustic wave resonator." [Boise, Idaho] : Boise State University, 2009. http://scholarworks.boisestate.edu/td/58/.

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3

Calton, Matthew Franklin. "Modeling of Acoustic Resonators and Resonator Systems for Use in Passive Noise Control." BYU ScholarsArchive, 2016. https://scholarsarchive.byu.edu/etd/9261.

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Acoustic resonators, such as the Helmholtz and quarter-wave resonator, can be used to attenuate unwanted noise in an enclosed space. Classical formulations can be used to approximate resonator performance for a given resonator configuration, but may lack sufficient accuracy for some applications. This research aims to improve the analytical characterization of resonators to provide better correlation to experimental results. Using higher-order approximations and proper end corrections, more accuracy can be obtained in calculating the impedance and resonance frequency of a single resonator,

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4

Choe, Seok Yun. "Investigation of a constricted annular acoustic resonator." Thesis, Monterey, California. Naval Postgraduate School, 1997. http://hdl.handle.net/10945/8575.

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Approved for public release; distribution is unlimited<br>One topic of current interest in thermoacoustic research is an annular prime mover Lin et al., J. Acoust. Soc. Am, 100, 2846 (1996). The staring point for this research is an investigation of a constricted annular resonator. A literature search of the field resulted in surprisingly few references. The results of analytic, numerical, and experimental investigations are presented. Introducing a constriction into an annular resonator splits each longitudinal duct mode into two modes, one of a higher frequency with a pressure antinode at th

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5

Araya, Kleinsteuber Bernardita Maria. "Characterization of the magnetic acoustic resonator sensor." Thesis, University of Cambridge, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.613129.

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6

Prasad, Abhinav. "Bulk-acoustic micromechanical resonator platforms for interfacial sensing." Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708654.

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7

Hu, Ruifen. "Responsive polymer-coated magnetic acoustic resonator sensors (MARS)." Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610123.

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8

Wang, TingTing. "Acoustic / elastic wave propagation in coupled-resonator waveguides." Thesis, Bourgogne Franche-Comté, 2020. http://www.theses.fr/2020UBFCD061.

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Lorsqu'un défaut est introduit dans un cristal phononique, des états apparaissent dans les bandes interdites et se localisent au niveau des défauts. Ils décroissent rapidement loin du défaut. Par conséquent, il est possible de localiser et de guider la propagation des ondes en concevant des défauts dans un cristal phononique parfait. Le guide d’onde à résonateurs couplés, fondé sur le couplage d'une séquence de cavités, présente simultanément un fort confinement des ondes et une faible vitesse de groupe ; il peut être utilisé pour concevoir des circuits plutôt arbitraires. En outre, la propaga

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9

Kioupritzi, Eleftheria. "Bio-molecular studies on the magnetic acoustic resonator sensor." Thesis, University of Cambridge, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.608590.

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10

Pottigari, Sai Sumanth Kwon Jae Wan. "Low loss film bulk acoustic resonator in liquid environments." Diss., Columbia, Mo. : University of Missouri-Columbia, 2008. http://hdl.handle.net/10355/6083.

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The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Title from PDF of title page (University of Missouri--Columbia, viewed on October 7, 2009) Thesis advisor: Dr. Jae Wan Kwon, Includes bibliographical references.

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11

FIGUEIREDO, SAVIO WESLLEY OLIVEIRA. "STRAIN SENSITIVITY ANALISYS OF A SURFACE ACOUSTIC WAVE RESONATOR DEVICE." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2017. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=33356@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>PROGRAMA DE EXCELENCIA ACADEMICA<br>Os sensores de deformação convencionais, por exemplo, os strain gages resistivos e ópticos, consagrados pelo mercado, são empregados em diferentes ambientes e estruturas, oferecendo um nível de flexibilidade que permite sua integração a vários tipos de sistemas de medição. No entanto, requerem uma fonte de energia elétrica local ou não podem funcionar sem cabos, limitando o seu

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12

Buxton, Amanda Jane. "The thermophysical properties of gases determined using an annular acoustic resonator." Thesis, University College London (University of London), 1997. http://discovery.ucl.ac.uk/1317666/.

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A novel annular acoustic resonator was constructed for measurements of the speed of sound in gases at pressures below 1 MPa. The resonator was designed to allow measurements of the speed and absorption of sound at low pressure in gases with large bulk viscosities. Measurements in propene, for which the speed of sound is known, served to characterise the geometry of the resonator and provide a test of the acoustic model for the system. A detailed description of the resonator which has an outer radius of 140 mm is given. The large radius provides low frequency resonance modes that minimise acous

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13

Weckman, Nicole Elizabeth. "Microfabricated acoustic sensors for the detection of biomolecules." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/274899.

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MEMS (Microelectromechanical Systems) acoustic sensors are a promising platform for Point-of-Care biosensing. In particular, piezoelectrically driven acoustic sensors can provide fast results with high sensitivity, can be miniaturized and mass produced, and have the potential to be fully integrated with sample handling and electronics in handheld devices. Furthermore, they can be designed as multiplexed arrays to detect multiple biomarkers of interest in parallel. In order to develop a microfabricated biosensing platform, a specific and high affinity biodetection platform must be optimized, an

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14

Wang, Zheng. "DEVELOPMENT OF ACOUSTIC MODELS FOR HIGH FREQUENCY RESONATORS FOR TURBOCHARGED IC-ENGINES." Thesis, KTH, MWL Marcus Wallenberg Laboratoriet, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-91335.

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Automotive turbo compressors generate high frequency noise in the air intake system. This sound generation is of importance for the perceived sound quality of luxury cars and may need to be controlled by the use of silencers. The silencers usually contain resonators with slits, perforates and cavities. The purpose of the work reported is to develop acoustic models for these resonators where relevant effects such as the effect of realistic mean flow on losses and possibly 3D effects are considered. An experimental campaign has been undertaken where the two-port matrices and transmission loss of

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15

Lutsky, Joseph J. (Joseph Joachim). "A sealed cavity thin-film acoustic resonator process for RF bandpass filters." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/10450.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.<br>Includes bibliographical references (p. 179-185).<br>by Joseph J. Lutsky.<br>Ph.D.

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16

Munir, Farasat. "A fast, scalable acoustic resonator-based biosensor array system for simultaneous detection of multiple biomarkers." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/47712.

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This thesis is about the design of a biosensor system for detection of multiple cancer biomarkers. Accurate diagnosis and prognosis of cancer requires early detection. Equally important, though, is the measurement of biomarker-velocity and detection of multiple biomarkers. Early detection requires highly sensitive biosensors capable of detection at very low concentrations of target molecules. Biomarker-velocity can be measured by monitoring concentration of target molecule over a period of time. This requires a system which is very easy to use, fast, flexible, inexpensive and portable, thus en

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17

Wagner, Stefan. "Novel micromechanical bulk acoustic wave resonator sensing concepts for advanced atomic force microscopy." Thesis, KTH, Mikro- och nanosystemteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-117739.

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This thesis investigates novel concepts of micromechanical bulk acoustic wave sensors for advanced atomic force microscopy (AFM), using micromachined silicon resonators, which are analyzed with regard to their performance as compared to conventional AFM sensors. Conventional AFM systems use a cantilever resonator for sensing the surface forces of the sample. Since a laser is used to detect the cantilevers movement, a certain minimum area for reflecting the laser beam is required. These restrictions in the cantilever scalability limits the resonant frequency and quality factor of the resonator

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18

Sacarcelik, Ozer. "Acoustic Devices for the Active & Passive Control of Sound in a Payload Compartment." Thesis, Virginia Tech, 2004. http://hdl.handle.net/10919/9950.

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The work presented in this thesis can be divided into two main subjects. First, lightweight designs for acoustic devices such as Helmholtz resonators and loudspeakers used for noise control in rocket payload compartments are developed. Second, active control using a hybrid control system (with structural and acoustic actuators) was tested experimentally. Due to the weight limitations for this application, Helmholtz resonators and loudspeakers are re-designed in order to reduce the device weight as much as possible while maintaining performance. For Helmholtz resonators, this is done by modelin

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19

Woodside, Steven Murray. "Spatial distribution of acoustic forces on particles : implications for particle separation and resonator design." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0007/NQ34646.pdf.

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20

Angerstein, Jeanette Louise. "A hemispherical acoustic resonator for the measurement of the speed of sound in gases." Thesis, University College London (University of London), 2000. http://discovery.ucl.ac.uk/1382240/.

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A hemispherical acoustic resonator is described which was designed and constructed for the measurement of the speed of sound in gases, at pressures up to 40 MPa and at temperatures in the range from 300 K to 400 K. The hemispherical geometry retains many of the advantages characteristic of the spherical geometry but affords a major advantage at high pressures because one of the transducers may be placed at a position of maximum acoustic density for the radial modes and so loss of signal strength is minimised. A detailed description is given of the resonator and pressure vessel, the thermostat

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21

Tayari, Danial. "Design and Development of Gigahertz Range VCO Based on Intrinsically Tunable Film Bulk Acoustic Resonator." Thesis, Högskolan i Gävle, Avdelningen för elektronik, matematik och naturvetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-12319.

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The purpose of this thesis is to design and fabricate Gigahertz range voltage controlled oscillator based on intrinsically tunable film bulk acoustic resonator.Modified Butterworth Van Dyke (MBVD) model was studied and implemented to simulate FBAR behavior. Advanced designed system (ADS) was used as the simulation tool.Oscillator theory is studied and an oscillator based on non-tunable FBAR at 2GHz is simulated which shows -132 dBc/Hz phase noise @ 100 kHz offset frequency.A 5.5 GHz Voltage controlled oscillator based on intrinsically tunable FBAR is designed. Frequency tuning of 129 MHz with

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22

Estève, Simon J. "Control of sound transmission into payload fairings using distributed vibration absorbers and Helmholtz resonators." Diss., Virginia Tech, 2004. http://hdl.handle.net/10919/11183.

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A new passive treatment to reduce sound transmission into payload fairing at low frequency is investigated. This new solution is composed of optimally damped vibration absorbers (DVA) and optimally damped Helmholtz resonators (HR). A fully coupled structural-acoustic model of a composite cylinder excited by an external plane wave is developed as a first approximation of the system. A modal expansion method is used to describe the behavior of the cylindrical shell and the acoustic cavity; the noise reduction devices are modeled as surface impedances. All the elements are then fully coupled usin

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23

Javaid, Usman. "Modeling of a Tunable Film Bulk Acoustic Resonator and Bandpass Filter Design by using Ferroelectric Film." Thesis, Högskolan i Gävle, Avdelningen för elektronik, matematik och naturvetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-9432.

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Filters having smallest size, high power handling capability, high Q factor, operating frequency up to several gigahertz’s (GHz) and low cost are the demand of the market to use in front end wireless/radio communication systems. In this regard several filter technologies have been introduced and utilized commercially. The increasing demand of such type of filters has opened a new challenge for filter designers. The purpose of this thesis is to design of a Tunable Bandpass Filter based on Barium Strontium Titanate (BSTO) Ferroelectric Film. A single Film bulk acoustic resonator (FBAR) is measur

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24

Dickherber, Anthony. "Design, fabrication and testing of an acoustic resonator-based biosensor for the detection of cancer biomarkers." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26575.

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Thesis (Ph. D.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: William Hunt; Committee Member: Alfred Merrill, Jr.; Committee Member: John Petros; Committee Member: Peter Hesketh; Committee Member: Robert Butera. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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25

Manoosingh, Lane Leslie. "Design of a chemical agent detector based on polymer coated surface acoustic wave (SAW) resonator technology." [Tampa, Fla.] : University of South Florida, 2004. http://purl.fcla.edu/fcla/etd/SFE0000412.

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26

Irfanoglu, Bulent. "Boundary Element-finite Element Acoustic Analysis Of Coupled Domains." Phd thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12605360/index.pdf.

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This thesis studies interactions between coupled acoustic domain(s) and enclosing rigid or elastic boundary. Boundary element-finite element (BE-FE) sound-structure interaction models are developed by coupling frequency domain BE acoustic and FE structural models using linear inviscid acoustic and elasticity theories. Flexibility in analyses is provided by discontinuous triangular and quadrilateral elements in the BE method (BEM), and a rectangular plate and a triangular shell element in the FE method (FEM). An analytical formulation is developed for an extended fundamental sound-struct

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27

Francis, Laurent A. "Thin film acoustic waveguides and resonators for gravimetric sensing applications in liquid." Université catholique de Louvain, 2006. http://edoc.bib.ucl.ac.be:81/ETD-db/collection/available/BelnUcetd-01272006-113333/.

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The fields of health care and environment control have an increasing demand for sensors able to detect low concentrations of specific molecules in gaseous or liquid samples. The recent introduction of microfabricated devices in these fields gave rise to sensors with attractive properties. A cutting edge technology is based on guided acoustic waves, which are perturbed by events occurring at the nanometer scale. A first part of the thesis investigates the Love mode waveguide, a versatile structure in which a thin film is guiding the acoustic wave generated in a piezoelectric substrate. A system

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28

Wang, Bin. "Reduction of acoustic fields of horn-like structures by optimization of network resonators." Thesis, Paris Est, 2015. http://www.theses.fr/2015PESC1155/document.

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Le bruit généré dans la zone de contact entre un pneumatique et une route peut être amplifié par des dièdres constitués des surfaces du pneumatique et la route. Cette étude est consacrée à l'optimisation et à la conception de bandes de roulement et de textures de la route pour réduire l'amplification de l'effet dièdre sur la base de l'annulation de sons. Les bandes de roulement et les textures de la route peuvent être considérées comme deux réseaux dans la zone de contact. Les surfaces du pneumatique et de la route peuvent être considérées comme des baffles. Un modèle de réseau à baffle est co

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29

Hughes, William L. "Synthesis and characterization of zinc oxide nanostructures for piezoelectric applications." Diss., Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-08232006-155547/.

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Thesis (Ph. D.)--Materials Science and Engineering, Georgia Institute of Technology, 2007.<br>Wang, Zhong Lin, Committee Chair ; Wong, C.P., Committee Member ; Summers, Christopher J., Committee Member ; Degertekin, F. Levent, Committee Member ; Bottomley, Lawrence A., Committee Member.

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30

Evdokimova, Iuliia. "Direct bandpass methodology for synthesis and design of stand-alone filters and duplexers based on acoustic wave technologies." Doctoral thesis, Universitat Autònoma de Barcelona, 2018. http://hdl.handle.net/10803/663826.

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Hoy en día, constantes exigencias del usuario han llegado a ser el motor del progreso tecnológico. La evolución de los teléfonos móviles y de los estándares de telecomunicaciones es un claro ejemplo de rápido avance tecnológico que continúa mejorando. Actualmente, es imposible imaginar nuestra vida sin un teléfono móvil. Gracias al desarrollo de Internet móvil, ahora tenemos variedad de oportunidades sin límites. Para mantener el nivel de intercambio de datos cada vez mayor, la alta velocidad, la latencia reducida y los servicios de banda ancha se han convertido en los objetos de constante mej

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31

Тычков, Д. В., К. В. Базило та В. В. Тычков. "Исследование пьезоэлектрических датчиков с акустическим резонатором". Thesis, Сумський державний університет, 2018. http://essuir.sumdu.edu.ua/handle/123456789/67916.

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Узкополосные пьезоэлектрические датчики широко используются в системах обеспечения от несанкционированного проникновения в помещения при разрушении стекла от ударов. Разработана эквивалентная электрическая принципиальная схема пьезоэлектрического датчика (рис. 1) с акустическим резонатором методом электромеханических аналогий.

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32

Clairet, Alexandre. "Modélisation et analyse numérique de résonateurs à quartz à ondes de volume." Thesis, Besançon, 2014. http://www.theses.fr/2014BESA2034/document.

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Ces travaux de thèe portent sur le développement d’un outil d’analyse numérique dédié à l’ étude de nouveaux résonateursà quartz à ondes de volume et utilisant les éléments finis. Cette méthode de caractérisation permet la détermination deséléments du schéma électrique équivalent (résistance, inductance et capacité) d’une fréquence de résonance donnée ainsique son facteur de qualité, tout en prenant en compte dans le modèle la sensibilité du cristal de quartz à la températureet aux contraintes induites par le montage. Une étape de validation est d’abord réalisée afin de vérifier nos choix, ent

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33

He, Shujian. "A TRANSFER MATRIX APPROACH TO DETERMINE THE LOW FREQUENCY INSERTION LOSS OF ENCLOSURES INCLUDING APPLICATIONS." UKnowledge, 2017. https://uknowledge.uky.edu/me_etds/104.

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Partial enclosures are commonly used to reduce machinery noise. However, it is well known in industry that enclosures sometimes amplify the sound at low frequencies due to strong acoustic resonances compromising the performance. These noise issues are preventable if predicted prior to prototyping and production. Though boundary and finite element approaches can be used to accurately predict partial enclosure insertion loss, modifications to the model require time for remeshing and solving. In this work, partial enclosure performance at low frequencies is simulated using a plane wave transfer m

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34

Giraud, Sylvain. "Étude, conception et réalisation de résonateurs piézoélectriques pour des applications hautes fréquences." Limoges, 2007. https://aurore.unilim.fr/theses/nxfile/default/195ce09e-4961-4884-be6c-d77510657ec0/blobholder:0/2007LIMO4052.pdf.

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Ce travail de thèse traite de l'étude, de la conception et de la réalisation de résonateurs piézoélectriques pour des applications hautes fréquences. La technologie BAW (Bulk Acoustic Wave) utilise la propagation des ondes acoustiques suivant l'épaisseur d'une couche de matériau piézoélectrique et représente une alternative intéressante aux technologies existantes. La modélisation mathématique du comportement physique des résonateurs BAW fait intervenir un système d'équations couplées difficilement soluble sans approximations. Des modèles unidimensionnels, basés sur l'approximation d'une propa

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35

Buchine, Brent Alan. "Acoustics in nanotechnology: manipulation, device application and modeling." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/26542.

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Thesis (Ph.D)--Materials Science and Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Wang, Zhong Lin; Committee Member: Degertekin, F. Levent; Committee Member: Liu, Meilin; Committee Member: Snyder, Robert L.; Committee Member: Tannenbaum, Rina. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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36

Polewczyk, Vincent. "Growth of hybrid piezoelectric/magnetostrictive systems for magnetic devices based on surface acoustic wave resonators." Thesis, Université de Lorraine, 2018. http://www.theses.fr/2018LORR0096/document.

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Le développement de matériaux avec différents ordres ferroïques couplés (multiferroïques) motive d’intenses activités de recherche. Une combinaison particulièrement intéressante est celle des paramètres d'ordre magnétique et électrique qui, dans le cas favorable où ceux-ci sont couplés, ouvre la voie au contrôle électrique de l’aimantation. Celui-ci peut être envisagé via la manipulation de la polarisation d’un ferroélectrique ou des déformations d’un piézoélectrique Les propriétés du matériau ferroélectrique/piézoélectrique peuvent être inversement modifiées par l’état d’aimantation, ce qui l

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37

Karlsson, Mikael. "Aeroacoustics Studies of Duct Branches with Application to Silencers." Doctoral thesis, KTH, MWL Strömningsakustik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-29568.

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New methodologies and concepts for developing compact and energy efficient automotive exhaust systems have been studied. This originates in the growing concern for global warming, to which road transportation is a major contributor. The focus has been on commercial vehicles—most often powered by diesel engines—for which the emission legislation has been dramatically increased over the last decade. The emissions of particulates and nitrogen oxides have been successfully reduced by the introduction of filters and catalytic converters, but the fuel consumption, which basically determines the emis

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Faure, Cédric. "Contrôle de la diffusion par des façades : cas des métasurfaces et des guides d'ondes ouverts inhomogènes." Thesis, Le Mans, 2017. http://www.theses.fr/2017LEMA1033/document.

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L’objectif de ce travail est le développement de dispositifs de contrôle de la diffusion des ondes acoustiques à l’aide de surfaces hétérogènes, pour des applications à l’acoustique urbaine. Pour remplir cet objectif, deux méthodes sont employées. La première à l’aide d’une métasurface, la direction d’une onde réfléchie est contrôlée. La seconde étude concerne l’influence d’un traitement inhomogène aux parois d’un guide ouvert sur les effets conjoints ou compétitifs d’absorption, de confinement et de rayonnement de l’onde. Nous montrons expérimentalement la possibilité de

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39

Pelteku, Altin E. "Development of an electromagnetic glottal waveform sensor for applications in high acoustic noise environments." Link to electronic thesis, 2004. http://www.wpi.edu/Pubs/ETD/Available/etd-0114104-142855/.

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Thesis (M.S.)--Worcester Polytechnic Institute.<br>Keywords: basis functions; perfectly matched layers; PML; neck model; parallel plate resonator; finite element; circulator; glottal waveform; multi-transmission line; dielectric properties of human tissues; radiation currents; weighted residuals; non-acoustic sensor. Includes bibliographical references (p. 104-107).

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40

Mazerolle, Denis. "Resonateur a cristaux de corindon et de yag." Paris 6, 1988. http://www.theses.fr/1988PA066410.

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41

El-Sabbagh, Adel. "Gas-filled axisymmetric acoustic resonators." College Park, Md. : University of Maryland, 2005. http://hdl.handle.net/1903/3177.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2005.<br>Thesis research directed by: Mechanical Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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42

Heckl, Maria Anna. "Heat sources in acoustic resonators." Thesis, University of Cambridge, 1985. https://www.repository.cam.ac.uk/handle/1810/250863.

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43

Aubert, Sébastien. "Étude d’un résonateur phononique à onde de surface pour des applications de capteurs de température et de déformation." Thesis, Bourgogne Franche-Comté, 2019. http://www.theses.fr/2019UBFCD008.

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Les résonateurs à ondes acoustiques de surface peuvent être utilisés en tant que capteur pour la mesure de température et de contrainte. La fonction capteur s’appuie sur l’exploitation de la variation de fréquence des résonateurs qui dépend de la variation de la grandeur mesurée. La technologie employée actuellement, à miroirs de Bragg, montre ses limites en termes de performances aux fréquences élevées (supérieures à 1 GHz).L’objectif de ces travaux fut ainsi d’étudier les possibilités et performances des cristaux phononiques. Cette technologie désigne l’ensemble des matériaux possédant des s

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44

Alkov, Steven L. "Multifrequency acoustic resonators with variable nonuniformity." Thesis, Monterey, California. Naval Postgraduate School, 1991. http://hdl.handle.net/10945/28380.

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Cheung, Sung-man, and 張宋文. "Electric control of acoustic impedance." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B45985376.

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46

Breuzet, Michel. "Resonateurs a ondes elastiques de volume en materiaux amorphes." Paris 6, 1988. http://www.theses.fr/1988PA066108.

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Varnadore, Larry P. "Feasibility of parametric excitation of acoustic resonators." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2001. http://handle.dtic.mil/100.2/ADA397538.

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Tabrizian, Roozbeh. "Temperature-compensated silicon-based bulk acoustic resonators." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/52929.

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Microelectromechanical resonators have found widespread applications in timing, sensing and spectral processing. One of the important performance metrics of MEMS resonators is the temperature sensitivity of their frequency. The main objective of this dissertation is the compensation and control of the temperature sensitivity of silicon resonators through engineering of device geometry and structural composition. This has been accomplished through formation of composite platforms or novel geometries based on dispersion characteristics of guided acoustic waves in single crystalline silicon (SCS)

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Bergweiler, Steffen. "Körperoszillation und Schallabstrahlung akustischer Wellenleiter unter Berücksichtigung von Wandungseinflüssen und Kopplungseffekten : Verändern Metalllegierung und Wandungsprofil des Rohrresonators den Klang der labialen Orgelpfeife?" Phd thesis, Universität Potsdam, 2005. http://opus.kobv.de/ubp/volltexte/2006/656/.

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Am Beispiel der Orgelpfeife wurde der Einfluss der Wandungsgeometrie des akustischen Wellenleiters auf die Schallabstrahlung untersucht. Für verschiedene Metalllegierungen wurden unterschiedliche Profile der Orgelpfeifenwandung verglichen: ein konisches Wandungsprofil mit zur Mündung hin abnehmender Wandungsstärke und ein paralleles Wandungsprofil mit konstanter Wandungsstärke. Für eine hohe statistische Sicherheit der Ergebnisse wurden sämtliche Untersuchungen an vier mal zehn Testpfeifen durchgeführt. Mit Ausnahme der beschriebenen Unterschiede sind die Pfeifen von gleichen Abmessungen und a

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Melnick, Joshua Robert. "Aluminum Nitride Countour Mode Resonators." Thesis, Rochester Institute of Technology, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1591270.

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<p> Resonators are a major component in RF electronic products. They are used in a host of ways to filter radio signals. Modern and Future RF communications have placed high demands on the industry; requiring low power usage, wide array of applications and resistance to noise. </p><p> In this thesis, a discussion of the motivation for RF MEMS filters and basic theory is given with an explanation of the concepts of Q factor, piezoelectricity, acoustics theory, the major types of resonators (SAW, BAW, CMR or LAMB), apodization theory and techniques as well as design, simulation of CMR and BAW

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