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Dissertations / Theses on the topic 'Surface Acoustic Wave'

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1

Haskell, Reichl B. "A Surface Acoustic Wave Mercury Vapor Sensor." Fogler Library, University of Maine, 2003. http://www.library.umaine.edu/theses/pdf/HaskellRB2003.pdf.

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2

Hong, Stanley Seokjong 1977. "Surface acoustic wave optical modulation." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/86715.

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Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.<br>Includes bibliographical references (leaves 50-54).<br>by Stanley Seokjong Hong.<br>M.Eng.
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3

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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4

McNeil, Robert Peter Gordon. "Surface acoustic wave quantum electronic devices." Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610718.

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5

Kaplan, Emrah. "Surface acoustic wave enhanced electroanalytical sensors." Thesis, University of Glasgow, 2015. http://theses.gla.ac.uk/6557/.

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In the last decade, miniaturised “lab-on-a-chip” (LOC) devices have attracted significant interest in academia and industry. LOC sensors for electrochemical analysis now commonly reach picomolar in sensitivities, using only microliter-sized samples. One of the major drawbacks of this platform is the diffusion layer that appears as a limiting factor for the sensitivity level. In this thesis, a new technique was developed to enhance the sensitivity of electroanalytical sensors by increasing the mass transfer in the medium. The final device design was to be used for early detection of cancer dise
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6

Kenny, Thomas Donald. "Identification of High-Velocity Pseudo-surface Acoustic Wave Substrate Orientations and Modeling of Surface Acoustic Wave Structures." Fogler Library, University of Maine, 2011. http://www.library.umaine.edu/theses/pdf/KennyT2011.pdf.

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7

Banerjee, Markus K. "Acoustic wave interactions with viscous liquids spreading in the acoustic path of a surface acoustic wave sensor." Thesis, Nottingham Trent University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302521.

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8

Thorn, Adam Leslie. "Electron dynamics in surface acoustic wave devices." Thesis, University of Cambridge, 2009. https://www.repository.cam.ac.uk/handle/1810/224176.

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Gallium arsenide is piezoelectric, so it is possible to generate coupled mechanical and electrical surface acoustic waves (SAWs) by applying a high-frequency voltage to a transducer on the surface of GaAs. By combining SAWs with existing low-dimensional nanostructures one can create a series of dynamic quantum dots corresponding to the minima of the travelling electric wave, and each dot carries a single electron at the SAW velocity (~ 2800 m/s). These devices may be of use in developing future quantum information processors, and also offer an ideal environment for probing the quantum mechanic
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9

Astley, Michael Robert. "Surface-acoustic-wave-defined dynamic quantum dots." Thesis, University of Cambridge, 2008. https://www.repository.cam.ac.uk/handle/1810/261973.

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The strain associated with a surface acoustic wave (SAW) propagating across a piezoelectric medium creates a travelling electric potential. Gallium Arsenide is such a piezoelectric material, and so SAWs can be used with existing semiconductor technologies for creating complex low-dimensional nanostructures. A SAW travelling along an empty quasi-one-dimensional channel creates a series of dynamic quantum dots which can transport electrons at the SAW velocity (∼ 2800 ms−1 ), allowing high-frequency operations to be carried out on the electron without the need for fast pulsed-gate techniques. Suc
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10

Du, X. "Surface acoustic wave devices for microfluidic applications." Thesis, University of Cambridge, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.598662.

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This project investigates the use of surface acoustic waves (SAWs) for applications in low cost, low voltage, digital microfluidic systems. To be able to produce surface acoustic waves, the substrate of the microfluidic device needs to be a piezoelectric material. This study explored the use of two different substrates: 128° Y-cut lithium Niobate (LiNbO<sub>3</sub>) and RF magnetron sputtered Zinc Oxide(ZnO) on Silicon (Si) (100). The SAW device incorporates aluminium InterDigital Transducers (IDTs) on LiNbO<sub>3</sub> and ZnO/Si piezoelectric material that acts as an excitation agent to crea
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11

Gell, Jennifer Rachel. "Surface-acoustic-wave (SAW) driven light sources." Thesis, University of Cambridge, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.599350.

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This thesis concentrates on the interaction between SAWs (surface acoustic wave) and low-dimensional systems studied using optical techniques. In particular SAW-driven luminescence from a lateral <i>p-n</i> junction is demonstrated. The lateral <i>p-n</i> junction is formed by molecular beam epitaxy regrowth on a patterned GaAs substrate. Silicon is used as an amphoteric dopant to create a high mobility two-dimensional electron gas on flat (100) planes and a two-dimensional hole gas on angled (311)A facets. A lateral <i>p-n</i> junction is formed at the interface between these planes. SAWs wit
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12

Sehra, Gurmukh S. "Surface acoustic wave based flavour sensor system." Thesis, University of Warwick, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.416148.

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13

Meng, Qingbin. "Surface acoustic wave controlled semiconductor optical source." Thesis, University of Bath, 2009. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.518122.

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A semiconductor optical source monolithically integrated with a surface acoustic wave (SAW) Bragg-cell to operate as a functional device is proposed in this thesis. The practical structure of such an integrated device is demonstrated and design guidelines are presented. Compared with conventional optical beam processed devices, this functional integrated semiconductor optical source (FISOS) is revised to be compact in size, flexible in function and potentially robust in performance. <br /> The FISOS is analyzed as two sub-divisions, optical source and acoustic processor, which have the common
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14

Gizeli, Electra. "New acoustic wave sensor geometries." Thesis, University of Cambridge, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282004.

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15

Bright, Victor M. "Shear horizontal surface acoustic waves." Diss., Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/14831.

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16

Kitabayashi, Hiroyuki. "Surface acoustic wave filters on diamond layered structures /." *McMaster only, 2001.

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17

Alghane, Mansuor Mohamed. "Surface acoustic wave streaming in a microfluidic system." Thesis, Heriot-Watt University, 2013. http://hdl.handle.net/10399/2645.

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18

Khalid, Muhammad Arslan. "Engineering surface acoustic wave sensing and diagnostic devices." Thesis, University of Glasgow, 2017. http://theses.gla.ac.uk/30999/.

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Globally, over 50% of deaths occur due to the top 10 global diseases which include cardiovascular disease, cancer and infectious diseases. Low and middle-income countries (LMICs) are disproportionately affected. 80% of all deaths due to non-communicable diseases occur in low and middle income countries and with numbers on the rise. In these disadvantaged and vulnerable populations, diseases are often detected late. The treatment required is therefore increasingly extensive and expensive. Early detection, treatment and monitoring coupled with life-style changes can reduce mortality and morbidit
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19

Friedlander, Jeffrey B. "Wireless Strain Measurement with Surface Acoustic Wave Sensors." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1306874020.

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20

Andrade, Santos Marlo. "Wireless system for passive surface acoustic wave sensors." Electronic Thesis or Diss., Bordeaux, 2024. http://www.theses.fr/2024BORD0146.

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Avec les progrès du développement des appareils connectés et de l’Internet des objets (IoT), la surveillance continue des paramètres physiques et chimiques est devenue un défi actuel pour notre société.De plus, les dispositifs à ondes acoustiques de surface (SAW), largement utilisés comme filtres dans les télécommunications, remplissent désormais la fonction de capteurs.C’est dans ces deux contextes que se situent les travaux de cette thèse.L'objectif est de développer un système de lecture sans fil utilisant l'un de ces capteurs, notamment le capteur à ondes de Love (Love Wave ou LW) à sensib
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21

Chiu, Ching-Sang Denner Warren W. "Report on the Office of Naval Research USA-China Conference on Shallow Water Acoustics, December 18-21, 1995." Monterey, CA : Naval Postgraduate School, 1997. http://catalog.hathitrust.org/api/volumes/oclc/37486128.html.

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22

Reese, Owein. "Homogenization of acoustic wave propagation in a magnetorheological fluid." Link to electronic thesis, 2004. http://www.wpi.edu/Pubs/ETD/Available/etd-0430104-101629.

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23

Sen, Rahul. "Acoustic scattering by discontinuities in waveguides." Diss., Virginia Polytechnic Institute and State University, 1988. http://hdl.handle.net/10919/81021.

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The scattering of acoustic waves by boundary discontinuities in waveguides is analyzed using the Method of Matched Asymptotic Expansions (MAE). Existing theories are accurate only for very low frequencies. In contrast, the theory developed in this thesis is valid over the entire range of frequencies up to the first cutoff frequency. The key to this improvement lies in recognizing the important physical role of the cutoff cross-modes of the waveguide, which are usually overlooked. Although these modes are evanescent, they contain information about the interaction between the local field near th
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24

Kavalov, Dimitar A. "Surface acoustic wave neural networks for RF signal processing." Thesis, Oxford Brookes University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249406.

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25

Nash, Geoffrey Richard. "Surface acoustic wave investigations of low dimensional electron systems." Thesis, University of Bath, 1996. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320474.

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26

Tew, R. "Imaging theory of surface-breaking discontinuities." Thesis, University of Oxford, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380008.

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27

Srinivasan, krishnan. "Nanomaterial sensing layer based surface acoustic wave hydrogen sensors." [Tampa, Fla.] : University of South Florida, 2005. http://purl.fcla.edu/fcla/etd/SFE0001325.

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28

Tran, Tuan A. "Extrinsic Fabry-Perot interferometer for surface acoustic wave measurement." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-10242009-020318/.

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29

Blaess, Guido. "Häusung von Surface-acoustic-wave-Sensoren für die Bioanalytik." Karlsruhe : Forschungszentrum Karlsruhe, 2006. http://d-nb.info/983159173/34.

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30

Schuler, Leo Pius. "Wireless identification and sensing using surface acoustic wave devices." Thesis, University of Canterbury. Electrical Engineering, 2003. http://hdl.handle.net/10092/1081.

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Wireless Surface Acoustic Wave (SAW) devices were fabricated and tested using planar Lithium Niobate (LiNbO₃) as substrate. The working frequencies were in the 180 MHz and 360 MHz range. Using a network analyser, the devices were interrogated with a wireless range of more than 2 metres. Trials with Electron Beam Lithography (EBL) to fabricate SAW devices working in the 2450 MHz with a calculated feature size of 350 nm are discussed. Charging problems became evident as LiNbO₃ is a strong piezoelectric and pyroelectric material. Various attempts were undertaken to neutralise the charging problem
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31

Schuler, Leo P. "Wireless identification and sensing using surface acoustic wave devices." Thesis, University of Canterbury. Engineering, 2003. http://hdl.handle.net/10092/8565.

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Wireless Surface Acoustic Wave (SAW) devices were fabricated and tested using planar Lithium Niobate (LiNbO₃) as substrate. The working frequencies were in the 180 MHz and 360 MHz range. Using a network analyser, the devices were interrogated with a wireless range of more than 2 metres. Trials with Electron Beam Lithography (EBL) to fabricate SAW devices working in the 2450 MHz with a calculated feature size of 350 nm are discussed. Charging problems became evident as LiNbO₃ is a strong piezoelectric and pyroelectric material. Various attempts were undertaken to neutralise the charging problem
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32

Gates, Michael Richard. "Surface acoustic wave investigations of spin and pseudospin systems." Thesis, University of Nottingham, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.247121.

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33

Rimsa, Roberts. "Surface acoustic wave microfluidic pumps for on-chip diagnostics." Thesis, University of Leeds, 2018. http://etheses.whiterose.ac.uk/22524/.

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Most of point-of-care diagnostics and lab-on-chip devices that do on-chip sample preparation require active fluid actuation. In a laboratory setting, this is done via bulky benchtop equipment such as syringe pumps, peristaltic pumps and pressure systems. However, integration of a pumping unit onto the device allows for increased portability and decreased footprint of the device. Although there are multiple examples of realised micropumps based on different technologies, no one solution offers a combination of small footprint, low costs, scalable manufacturing and high performance required for
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34

Miller, James Henry 1957. "Estimation of sea surface wave spectra using acoustic tomography." Thesis, Massachusetts Institute of Technology, 1987. http://hdl.handle.net/1721.1/44595.

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Thesis (Sc. D.)--Joint Program in Oceanographic Engineering (Massachusetts Institute of Technology, Dept. of Ocean Engineering; and the Woods Hole Oceanographic Institution), 1987.<br>Bibliography: p. 164-171.<br>Vita.<br>by James Henry Miller.<br>Sc.D.
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35

Srinivasan, Krishnan. "Nanomaterial Sensing Layer Based Surface Acoustic Wave Hydrogen Sensors." Scholar Commons, 2005. https://scholarcommons.usf.edu/etd/873.

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This thesis addresses the design and use of suitable nanomaterials and surface acoustic wave sensors for hydrogen detection and sensing. Nanotechnology is aimed at design and synthesis of novel nanoscale materials. These materials could find uses in the design of optical, biomedical and electronic devices. One such example of a nanoscale biological system is a virus. Viruses have been given a lot of attention for assembly of nanoelectronic materials. The tobacco mosaic virus (TMV) used in this research represents an inexpensive and renewable biotemplate that can be easily functionalized for th
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36

Kim, Yoonkee. "Surface acoustic wave propagation in multilayered and multichannel waveguide structures." Diss., Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/15060.

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37

Furnell, G. D. "A study of acoustic wave propagation within curved ducting systems /." Title page, table of contents and abstract only, 1989. http://web4.library.adelaide.edu.au/theses/09PH/09phf987.pdf.

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38

Berry, David Leonard. "Acoustic scattering by near-surface inhomogeneities in porous media." Thesis, Open University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.254021.

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39

Johari, Houri. "Micromachined capacitive silicon bulk acoustic wave gyroscopes." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/31656.

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Thesis (Ph.D)--Mechanical Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Dr. Farrokh Ayazi; Committee Co-Chair: Dr. F. Levant Degertekin; Committee Member: Dr. Paul Kohl; Committee Member: Dr. Peter Hesketh; Committee Member: Dr. Suresh K. Sitaraman. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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40

RUIZ, ALBERTO. "SURFACE ACOUSTIC WAVE VELOCITY MEASUREMENTS ON SURFACE-TREATED METALS BY LASER-ULTRASONIC SPECTROSCOPY." University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1077302192.

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41

Lin, Xin-Yu, and 林信宇. "Composite Surface Acoustic Wave Substrate." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/80342744786128229150.

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碩士<br>正修科技大學<br>電子工程研究所<br>98<br>The (100) oriented Aluminum nitrogen (AlN) thin films have excellent bulk acoustic wave (BAW) and surface acoustic wave (SAW) properties. In this study, the piezoelectric 64°-YX LiNbO3 substrate was used to fabricate the SAW devices. We also deposited (100) oriented AlN thin film on this lithium niobate (LiNbO3) substrate to form a new composite substrate (AlN/LiNbO3) using reactive radio frequency magnetron sputtering method. The SAW devices were fabricated on the composite substrate and the effects of AlN film thickness on the composite substrate properties h
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42

Chiu, Shih-Chuan, and 邱仕釧. "Design of Surface Acoustic Wave Gyroscope." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/5wt3wa.

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碩士<br>國立交通大學<br>機械工程系所<br>93<br>The preliminary design and performance evaluation of a radio frequency MEMS gyroscope, based on a surface acoustic wave resonator (SAWR) and a surface acoustic wave sensor (SAWS) is presented in this work. In addition, the method to convert the transmitted power into exact particle displacement is introduced to predict the sensing resolution of this MEMS gyroscope. Microelectromechanical systems (MEMS) sensors have received more attention over the last decade. They generally have the advantages of being lightweight, small in size, low power consumption and low c
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43

Young, Ming-Sheng, and 楊明昇. "Characteristics of Surface Acoustic Wave Sensor." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/81672173386487190179.

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碩士<br>國立成功大學<br>電機工程學系<br>89<br>This paper is primarily divided into two sections. In section 1, the design and fabrication of IF SAW device are described. In section 2, the sensing property of SAW gas sensor for ethanol vapor is discussed. Based on sensing requirement, the first condition for SAW device design is low insertion loss that promising whole oscillation circuit can work normally. We choose LiNbO3 to be substrate and construct grating reflectors. The insertion loss of SAW device with 30 pairs grating reflections is 4 ~ 4.5dB, and that with 50 pairs grating reflectors is
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44

Wang, Bing-Yu, and 王炳昱. "2.45GHz Surface Acoustic Wave RFID device." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/04739017499281301108.

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碩士<br>國立中興大學<br>機械工程學系所<br>100<br>Currently, surface acoustic radio frequency identification (SAW RFID) tag received increasing attention because of several advantages such as large reliable reading range, low power consumptions, able to operate high temperature range from -40C to 400C and able to be used in harsh environment. One pair of metallic interdigital transducers (IDT) and several reflectors are on the surface of SAW tags. When an electrical signal is applied to IDT, a mechanical acoustic wave will be triggered and transferred to reflector. The time-dependent reflection waves return t
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45

Pu, Rui Zhen, and 蒲瑞臻. "Study of Diamond Surface Acoustic Wave Filter." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/73906707995566481528.

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碩士<br>國立臺北科技大學<br>材料及資源工程系碩士班<br>91<br>This study have focused on three parts of the diamond surface acoustic wave(SAW)filter, including ultrasonic pulse experiment of material, make smooth diamond thin film, and deposition ZnO thin film. Diamond film and oriented ZnO thin film can be used in high frequency, high power and good temperature stability of SAW filters. Materials study for diamond SAW filter is the objective in this study. First, the elastic properties of materials are determined by ultrasonic pulse experiment. The effects of crystal structure and elastic constant or the
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Nian, Yi-Wei, and 粘益維. "Optimal Design of Surface Acoustic Wave Devices." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/5hk358.

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碩士<br>國立臺南大學<br>材料科學系碩士班<br>102<br>This studied plan is to propose an innovated process for fabricating the flexible SAW devices by sol-gel technology and fully ink jet technology. The ZnO solution is prepared by sol-gel technology. We design inter digital transducer (IDT) pattern and deposits ZnO solution on the flexible polyimide plastic (PI) substrate by fully ink jet process. Next, the frequency of SAW device can be measured by the function generator and spectrum analyzer. Here, 7.2MHz is the maximum gain of this device, it will be observed as the SAW center operating frequency. Through th
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Feng, Yi-Shuo, and 馮顗碩. "A New-Type Surface Acoustic Wave Filter." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/88178144542455205846.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>102<br>This thesis proposed that if we bond a piezoelectric material on substrate which deposited the electrodes and etched trenches between the electrodes, we can exclude mass and stiffness effect by IDTs (Inter digital transducers) on substrate. Through this method, we can let the SAW propagate on clean and flat piezoelectric material achieves more accurate filtering effect. This method not only eliminates the cost of trimming, but also provides the good protection ability to the filter. First, this thesis chose the ST-cut quartz piezoelectric as material to t
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48

Chiu, Chun-HO, and 邱俊豪. "A New-Type Surface Acoustic Wave Filter." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/01521144110049783333.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>101<br>It is proposed that the saw(surface acoustic wave) propagation characteristics in a half–space piezoelectric crystal will change as the depth or duty cycle ratio of the periodic electrodes is tuned. Considering the saw propagation in half-space piezoelectric crystal with periodic electrodes, which are conductors and have mass and stiffness, periodic electrodes affect the saw propagation with the three reasons. Mass and stiffness effects belong to mechanical effects, while being conductors affecting the electric potential of the substrate belongs to electric
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49

Chen, Han-Jan, and 陳漢珍. "An Integrable Surface Acoustic Wave Notch Filter." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/41093301022907822665.

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碩士<br>國立成功大學<br>微電子工程研究所碩博士班<br>90<br>Although Surface Acoustic Wave Notch Filter was investigated in the past, the structures of these devices often needed the extra lumped-element : resistance R、capacitance C and inductance L so that the devices are complex and integrated hardly. From this, we offer a simple planar structure of the SAW notch filters that have smaller size and can be fabricated easily. It has several advantages such as easy-integrated; smaller size and no power dissipation. We adopt the interdigital transducers and delay line to fabricate the SAW notch filter. In this paper,
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50

Hung, Chia-hsun, and 洪嘉珣. "Study of Broadband Surface Acoustic Wave Antenna." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/34683406321781827716.

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碩士<br>國立臺南大學<br>電機工程研究所<br>99<br>In recent years, antenna developments have been fueled by the rapid development of modern wireless communication systems. In particular, communication products have become an indispensable part of people&apos;&apos;s daily lives. An antenna plays the important role in communication systems as it has independent properties that affect the wireless radio frequency (RF) receiver as a whole. In the past, antennas have studied in radar and satellite equipment extensively, so the sizes are very large. Recent portable communication developments in the study of light-w
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