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Dissertations / Theses on the topic 'High frequency gravity waves'

Author: Grafiati

Published: 6 September 2023

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1

Yu, Yonghui. "MODEL STUDIES OF TIME-DEPENDENT DUCTING FOR HIGH-FREQUENCY GRAVITY WAVES AND ASSOCIATED AIRGLOW RESPONSES IN THE UPPER ATMOSPHER." Doctoral diss., University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3623.

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This doctoral dissertation has mainly concentrated on modeling studies of shorter period acoustic-gravity waves propagating in the upper atmosphere. Several cases have been investigated in the literature, which are focusing on the propagation characteristics of high-frequency gravity wave packets. The dissertation consists of five main divisions of which each has its own significance to be addressed, and these five chapters are also bridged in order with each other to present a theme about gravity wave ducting dynamics, energetics, and airglows. The first chapter is served as an introduction o

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2

Malenova, Gabriela. "Uncertainty quantification for high frequency waves." Licentiate thesis, KTH, Numerisk analys, NA, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-186287.

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We consider high frequency waves satisfying the scalar wave equationwith highly oscillatory initial data. The speed of propagation of the mediumas well as the phase and amplitude of the initial data is assumed to beuncertain, described by a finite number of independent random variables withknown probability distributions. We introduce quantities of interest (QoIs)aslocal averages of the squared modulus of the wave solution, or itsderivatives.The regularity of these QoIs in terms of the input random parameters and thewavelength is important for uncertainty quantification methods based oninterpo

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3

De, Deuge Maria. "Optical observations of gravity waves in the high-latitude thermosphere /." Title page, abstract and contents only, 1990. http://web4.library.adelaide.edu.au/theses/09SM/09smd485.pdf.

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Fozard, John Andrew. "Diffraction and scattering of high frequency waves." Thesis, University of Oxford, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.433239.

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This thesis examines certain aspects of diffraction and scattering of high frequency waves, utilising and extending upon the Geometrical Theory of Diffraction (GTD). The first problem considered is that of scattering of electromagnetic plane waves by a perfectly conducting thin body, of aspect ratio O(k^1/2), where k is the dimensionless wavenumber. The edges of such a body have a radius of curvature which is comparable to the wavelength of the incident field, which lies inbetween the sharp and blunt cases traditionally treated by the GTD. The local problem of scattering by such an edge is tha

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5

Koen, Etienne. "A Simulation Approach to High-Frequency Plasma Waves." Licentiate thesis, KTH, Rymd- och plasmafysik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-106822.

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Electrostatic waves in the form of Broadband Electrostatic Noise (BEN) have been observed in the Earth's auroral region associated with high geomagnetic activity. This broad frequency spectrum consists of three electrostatic modes, namely electron plasma, electron acoustic and beam-driven modes. These modes are excited in a plasma containing three electron components: hot, cool and beam electrons. A 1D Particle-in-Cell (PIC) simulation was developed to investigate the characteristics of the electrostatic waves found in such a plasma. Dispersion, phase space and spatial electric field diagrams

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6

Suedan, Gibreel A. "High frequency beam diffraction by apertures and reflectors." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/27545.

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Most solutions for electromagnetic wave diffraction by obstacles and apertures assume plane wave incidence or omnidirectional local sources. Solutions to diffraction problems for local directive sources are needed. The complex source point representation of directive beams together with uniform solutions to high frequency diffraction problems is a powerful combination for this. Here the method is applied to beam diffraction by planar structures with edges, such as the half-plane, slit, strip, wedge and circular aperture. Previously used restrictions to very narrow beams and paraxial regions,

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7

Ford, E. A. K. "Gravity waves and small-scale structure of the high-latitude upper atmosphere." Thesis, University College London (University of London), 2007. http://discovery.ucl.ac.uk/1445456/.

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Small-scale structure of the thermosphere is studied at high-latitudes for its important role in ion-neutral coupling. Four Fabry-Perot Interferometers (FPIs) in Scandinavia are primarily used. These are supplemented by a range of other instruments, including the Spectrograph Imaging Facility, radars, magnetometers, all-sky cameras, and satellite data. The FPIs measure the atomic oxygen emission line at 6300 A, from 240 km altitude. Emission intensities, thermospheric line of sight wind speeds, and neutral temperatures are obtained. Comparisons of electron densities from tomography data and EI

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8

Al-Balushi, K. R. N. "The use of high frequency stress waves for monitoring gears." Thesis, Cranfield University, 1995. http://dspace.lib.cranfield.ac.uk/handle/1826/10575.

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The aim of this research is to investigate the feasibility of using stress waves for condition monitoring of gears. The project involved setting up an experimental rig, carrying out experimental work, acquiring stress waves signatures, and processing the signals. It has been shown that stress waves can successfully be employed for early detection of incipient gear failure. A experimental gearbox was employed during the experiments. Miniature ultrasound transducers, both sensitive and sufficiently small, were manufactured and installed on the stationary outer race of the rolling element bearing

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Al-Balushi, Khamis Rajab Nasser. "The use of high frequency stress waves for monitoring gears." Thesis, Cranfield University, 1995. http://dspace.lib.cranfield.ac.uk/handle/1826/10575.

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The aim of this research is to investigate the feasibility of using stress waves for condition monitoring of gears. The project involved setting up an experimental rig, carrying out experimental work, acquiring stress waves signatures, and processing the signals. It has been shown that stress waves can successfully be employed for early detection of incipient gear failure. A experimental gearbox was employed during the experiments. Miniature ultrasound transducers, both sensitive and sufficiently small, were manufactured and installed on the stationary outer race of the rolling element bearing

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10

Kipp, Robert. "Mixed potential integral equation solutions for layered media structures : high frequency interconnects and frequency selective surfaces /." Thesis, Connect to this title online; UW restricted, 1993. http://hdl.handle.net/1773/5974.

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11

Negale, Michael. "Investigating the Climatology of Mesospheric and Thermospheric Gravity Waves at High Northern Latitudes." DigitalCommons@USU, 2018. https://digitalcommons.usu.edu/etd/6937.

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An important property of the Earth's atmosphere is its ability to support wave motions, and indeed, waves exist throughout the Earth's atmosphere at all times and all locations. What is the importance of these waves? Imagine standing on the beach as water waves come crashing into you. In this case, the waves transport energy and momentum to you, knocking you off balance. Similarly, waves in the atmosphere crash, known as breaking, but what do they crash into? They crash into the atmosphere knocking the atmosphere off balance in terms of the winds and temperatures. Although the Earth's atmosphe

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12

Ballard, Valerie Jean. "Experiments with a high frequency laser slope meter." Thesis, University of Southampton, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367969.

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13

Alexander, C. Shafe. "High frequency enrichment in the p-wave coda of earthquakes." Thesis, Georgia Institute of Technology, 1986. http://hdl.handle.net/1853/26227.

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Salomon, Michael. "Properties of Gravity Probe B gyroscopes obtained from high frequency SQUID signal /." May be available electronically:, 2008. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.

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15

Popovic, Jelena. "Fast Adaptive Numerical Methods for High Frequency Waves and Interface Tracking." Doctoral thesis, KTH, Numerisk analys, NA (stängd 2012-06-30), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-105062.

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The main focus of this thesis is on fast numerical methods, where adaptivity is an important mechanism to lowering the methods' complexity. The application of the methods are in the areas of wireless communication, antenna design, radar signature computation, noise prediction, medical ultrasonography, crystal growth, flame propagation, wave propagation, seismology, geometrical optics and image processing. We first consider high frequency wave propagation problems with a variable speed function in one dimension, modeled by the Helmholtz equation. One significant difficulty of standard numeric

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16

Albert, Blace Chandler. "Characterization of nonlinearities in the propagation of high frequency seismic waves." Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/19432.

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Aurangzeb, Mohammad. "Fault location on a transmission line using high frequency travelling waves." Thesis, University of Manchester, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.488336.

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Miseikis, Vaidotas. "The interaction of graphene with high-frequency acoustic and electromagnetic waves." Thesis, University of Leeds, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.595843.

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Devices were developed to explore the perturbation of graphene using high-frequency signals. Two kinds of effects were studied: the interaction of graphene with surface acoustic waves (SAWs) and the propagation of picosecond pulses. The coupling of graphene with SAWs was first studied using flip-chip devices, which employed an evanescent field extending across the gap between the chips. A later design directly integrated layers of graphene grown by chemical vapour deposition (CVD) on piezoelectric 5ubstrates, containing interdigital transducers (IDTs) for SAW generation and detection. Graphene

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Hizam, H. "Fault location on a distribution feeder using high frequency travelling waves." Thesis, Queen's University Belfast, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.403225.

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20

Karlbom, Linus. "Computing the Energy of High Frequency Waves in a Confined Domain." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-102406.

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En metod för att beräkna energin hos ett högfrekvent vågfält inuti en begränsad tvådimensionell domän presenteras. Metoden är baserad på att approximera energin medelst strålföljning. Strålarna startar i en punktkälla och reflekteras (perfekt) vid domänens gräns. Energin i en del av domänen är summan av energierna i de strålar som passerar igenom den. Metoden har implementerats i datorprogrammet MATLAB. Numeriska experiment har gjorts för olika fall. Bland dessa är ett enkelt fall där den korrekta lösningen är känd och det har konstaterats att metoden då konvergerar mot denna rätt lösning. Res

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21

Bisignano, Davide. "Modal approach to elastic and gravity waves in laterally heterogeneous media: from tsunami to acoustic frequency range." Doctoral thesis, Università degli studi di Trieste, 2013. http://hdl.handle.net/10077/8605.

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2011/2012<br>Il presente lavoro di tesi presenta diverse applicazioni e sviluppi del metodo modale: in particolare, immaginando un percorso logico dalle basse alle alte frequenze, si sono considerate le onde di tsunami, onde sismiche propagantesi in strutture a forte eterogeneità laterale, fino a giungere all’applicazione del metodo al dominio acustico. Nel primo capitolo l’argomento trat- tato è quello degli tsunami (onde di gravità a lungo periodo), estendendo la tecnica modale agli tsunami e mostrando come questa metodologia consenta diversi approcci alla modellazione sia delle eteroge

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22

Martínez, Gómez David. "High-frequency waves and instabilities in multi-fluid partially ionized solar plasmas." Doctoral thesis, Universitat de les Illes Balears, 2018. http://hdl.handle.net/10803/461007.

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The solar atmosphere is a highly dynamic environment in which a huge diversity of waves and instabilities has been detected. The matter in that region is in plasma state, and thus is affected by the presence of electromagnetic fields. To understand its dynamics, a theory that combines the equations describing the properties and evolution of fluids with those for electric and magnetic fields is required. Among the several available alternatives that fulfill the mentioned conditions, ideal magnetohydrodynamics (MHD) is a useful description when the phenomena of interest are associated with

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23

Drexler, Josef. "Determining the properties of low-frequency Farley-Buneman waves at high latitudes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ58028.pdf.

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24

Meyer, Patrik K. (Patrik Kristof). "The impact of high frequency/low energy seismic waves on unreinforced masonry." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/38557.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2006.<br>Includes bibliographical references (p. [85]-87).<br>Traditionally, the high frequency components of earthquake loading are disregarded as a source of structural damage because of their small energy content and because their frequency is too high to resonate with the natural frequencies of structures. This thesis argues that higher frequency waves travelling through stiff masonry structures can trigger two types of failure mechanisms that have not yet been taken into account. First, the

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Kuehnert, Julian. "Simulation of High Frequency Seismic Waves generated by Rockfalls on Real Topography." Thesis, Université de Paris (2019-....), 2019. https://theses.md.univ-paris-diderot.fr/KUEHNERT_Julian_va2.pdf.

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Les risques d'éboulements doivent être évalués et surveillés afin de prévenir les pertes de vies humaines et dommages aux infrastructures. A cet égard, il est important de créer des catalogues d'événements et de comprendre la dynamique des éboulements. Les ondes sismiques peuvent être utiles à cette fin, car elles transmettent des informations précieuses sur l'événement. Elles sont générées lorsque des éboulements touchent le sol et peuvent être utilisées pour détecter, classer et localiser des événements. Plus encore, on peut déduire des propriétés des éboulements telles que leur volumes et l

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Chin, Eu-Jeen. "High performance vibration isolation techniques for the AIGO gravitational wave detector." University of Western Australia. School of Physics, 2007. http://theses.library.uwa.edu.au/adt-WU2007.0159.

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[Truncated abstract] Interferometric gravitational wave detectors are being built around the world with continually improving measurement sensitivities. Noise levels from sources that are intrinsic to these detectors must be reduced to a level below the gravita- tional wave signal. Seismic noise in the low frequency range, which is within the gravitational wave detection bandwidth, is a concern for earth-based detectors. This thesis presents research and development of a high performance vibration isolation system that is designed to attenuate seismic noise. The final design will be used as pa

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27

Trasobares, Sánchez Jorge. "High frequency electronics on nanodot molecular junctions : interaction between molecules, ions and waves." Thesis, Lille 1, 2015. http://www.theses.fr/2015LIL10168/document.

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Une combinaison entre l’assemblage de monocouches au sommet de nano-cristaux d’or et la microscopie à sonde locale permet d’explorer l’interaction entre les molécules actives et son milieu, mais aussi démontrer expérimentalement une diode moléculaire peut travailler à haute fréquence. La fabrication des nanocristaux d’or par lithographie électronique rapide nous a permis leur caractérisation par des techniques nécessitant des surfaces millimétrique, mais également par des techniques en champ proche. La détection electrochimique d’un petit nombre de molécules par nanocrystal prévoit d’intéressa

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Rokusek, Daniel L. "Excitation of Langmuir wave turbulence in high-frequency (HF) pump waves over Gakona, Alaska." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/41300.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Nuclear Science and Engineering, February 2007.<br>Includes bibliographical references (p. 53).<br>(cont.) Investigated in this thesis are the excitation and observation of Langmuir wave turbulence caused by the parametric decay instability (PDI) in high-frequency space plasma heating experiments conducted at the NSF/DoD High Frequency Active Auroral Research Program (HAARP) facility in Gakona, Alaska during the spring and summer of 2006. The PDI is the decay of an electromagnetic (EM) wave into an electron plasma wave (i.e., Langm

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Baker, Andrew Ballard. "Effect of Interplanetary Shock Impact Angle on the Occurrence Rate and Properties of Pc5 Waves Observed by High-Latitude Ground Magnetometers." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/90396.

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The effects of interplanetary shock impact angles have the potential to have far reaching consequences. By their nature, interplanetary shocks are a direct consequence of a variety of solar events including both Coronal Mass Ejections (CMEs) and Co-rotating Interaction Regions (CIRs). They have the ability to move the magnetopause, the boundary between the Earth's magnetosphere and the surrounding plasma, leading to ionospheric current systems and an enhanced ring current. Their association with a time-varying EMF also makes them potentially dangerous at a human level. This EMF can couple

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Kafle, Durga N. "Rayleigh-Lidar Observations of Mesospheric Gravity Wave Activity above Logan, Utah." DigitalCommons@USU, 2009. https://digitalcommons.usu.edu/etd/466.

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A Rayleigh-scatter lidar operated from Utah State University (41.7°N, 111.8°W) for a period spanning 11 years ― 1993 through 2004. Of the 900 nights observed, data on 150 extended to 90 km or above. They were the ones used in these studies related to atmospheric gravity waves (AGWs) between 45 and 90 km. This is the first study of AGWs with an extensive data set that spans the whole mesosphere. Using the temperature and temperature gradient profiles, we produced a climatology of the Brunt-Väisälä (buoyancy) angular frequency squared, N2 (rad/s)2. The minimum and maximum values of N2 vary betwe

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31

Arigong, Bayaner. "Space and Spectrum Engineered High Frequency Components and Circuits." Thesis, University of North Texas, 2015. https://digital.library.unt.edu/ark:/67531/metadc801923/.

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With the increasing demand on wireless and portable devices, the radio frequency front end blocks are required to feature properties such as wideband, high frequency, multiple operating frequencies, low cost and compact size. However, the current radio frequency system blocks are designed by combining several individual frequency band blocks into one functional block, which increase the cost and size of devices. To address these issues, it is important to develop novel approaches to further advance the current design methodologies in both space and spectrum domains. In recent years, the concep

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32

Kim, Hyo Tae. "High frequency analysis of EM scattering from a circular conducting cylinder with dielectric/ferrite coating /." The Ohio State University, 1986. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487322984315885.

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33

Noersomadi. "Characteristics of tropical tropopause and stratospheric gravity waves analyzed using high resolution temperature profiles from GNSS radio occultation." Kyoto University, 2019. http://hdl.handle.net/2433/242617.

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34

Liu, Horng-Twu. "The use of high frequency stress waves for detecting shaft seal rubbing and source location." Thesis, Cranfield University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309839.

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35

Trott, Keith Dennis. "A high frequency analysis of electromagnetic plane wave scattering by a fully illuminated perfectly conducting semi-infinite cone /." The Ohio State University, 1986. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487323583622574.

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36

Cardona, Orozco Yuley Mildrey. "Enhanced vertical mixing within mesoscale eddies due to high frequency winds in the south China sea." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/44917.

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The South China Sea is a marginal basin with a complex circulation influenced by the East Asian Monsoon, river discharge and intricate bathymetry. As a result, both the mesoscale eddy field and the near-inertial energy distribution display large spatial variability and they strongly influence the oceanic transport and mixing. With an ensemble of numerical integrations using a regional ocean model, this work investigates how the temporal resolution of the atmospheric forcing fields modifies the horizontal and vertical velocity patterns and impacts the transport properties in the basin. The res

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Tshisaphungo, Mpho. "Validation of high frequency propagation prediction models over Africa." Thesis, Rhodes University, 2010. http://hdl.handle.net/10962/d1015239.

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The ionosphere is an important factor in high frequency (HF) radio propagation providing an opportunity to study ionospheric variability as well as the space weather conditions under which HF communication can take place. This thesis presents the validation of HF propagation conditions for the Ionospheric Communication Enhanced Profile Analysis and Circuit (ICEPAC) and Advanced Stand Alone Prediction System (ASAPS) models over Africa by comparing predictions with the measured data obtained from the International Beacon Project (IBP). Since these models were not developed using information on t

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Cameron, Michelle. "Impact of low-frequency high-power ultrasound on spoilage and potentially pathogenic dairy microbes." Thesis, Link to the online version, 2007. http://hdl.handle.net/10019/597.

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Oprisoni, Cristian Alexandru [Verfasser]. "Investigation of the high frequency dynamic-mechanical properties of polymer systems using ultrasonic longitudinal waves / Cristian Alexandru Oprisoni." Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover (TIB), 2011. http://d-nb.info/104185126X/34.

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Webster, Bruce Naakaii Ts'oh. "Low magnitude high frequency vibrations applied to the foot through the pedal of a human powered artificial gravity (HPAG) cycle." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/34165.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, February 2006.<br>"February 2006."<br>Includes bibliographical references (p. 87-88).<br>Astronauts are exposed to hazards unique to space travel. These hazards include radiation exposure and adaptation of the human body to the microgravity environment. For lunar and low earth orbital missions, the exposure period is typically less than six months and return to Earth is less than two weeks away. For travel beyond the Earth's moon, the microgravity exposure time will increase from months to years and re

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Myung, Noh Hoon. "A high frequency analysis of electromagnetic plane wave scattering by perfectly-conducting semi-infinite parallel plate and rectangular waveguides with absorber coated inner walls /." The Ohio State University, 1986. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487267546980859.

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Phillips, William Scott. "The separation of source, path and site effects on high frequency seismic waves : an analysis using coda wave techniques." Thesis, Massachusetts Institute of Technology, 1985. http://hdl.handle.net/1721.1/59037.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric and Planetary Sciences, 1985.<br>Microfiche copy available in Archives and Science.<br>Bibliography: leaves 178-185.<br>by William Scott Phillips.<br>Ph.D.

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Gill, Eric William. "The scattering of high frequency electromagnetic radiation from the ocean surface : an analysis based on a bistatic ground wave radar configuration /." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0003/NQ42476.pdf.

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Leong, Jonathan Ryan Kyoung Ho. "Characterization of the Polarization and Frequency Selective Bolometric Detector Architecture." Case Western Reserve University School of Graduate Studies / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=case1232487119.

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Yang, Meng Verfasser], Christian [Akademischer Betreuer] Hirt, Dimitrios [Gutachter] Tsoulis, Christian [Gutachter] Hirt, and Roland [Gutachter] [Pail. "Investigation of the residual terrain modelling (RTM) technique for high-frequency gravity calculations / Meng Yang ; Gutachter: Dimitrios Tsoulis, Christian Hirt, Roland Pail ; Betreuer: Christian Hirt." München : Universitätsbibliothek der TU München, 2020. http://nbn-resolving.de/urn:nbn:de:bvb:91-diss-20200108-1521921-1-4.

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Yang, Meng [Verfasser], Christian [Akademischer Betreuer] Hirt, Dimitrios [Gutachter] Tsoulis, Christian [Gutachter] Hirt, and Roland [Gutachter] Pail. "Investigation of the residual terrain modelling (RTM) technique for high-frequency gravity calculations / Meng Yang ; Gutachter: Dimitrios Tsoulis, Christian Hirt, Roland Pail ; Betreuer: Christian Hirt." München : Universitätsbibliothek der TU München, 2020. http://d-nb.info/120546316X/34.

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Hannay, Jonathan David. "Computational simulations of thermally activated magnetisation dynamics at high frequencies." Thesis, Bangor University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367315.

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Jiménez, González Noe. "Nonlinear Acoustic Waves in Complex Media." Doctoral thesis, Universitat Politècnica de València, 2015. http://hdl.handle.net/10251/53237.

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[EN] Nature is nonlinear. The linear description of physical phenomena is useful for explain observations with the simplest mathematical models, but they are only accurate for a limited range of input values. In the case of intense acoustics waves, linear models obviate a wide range of physical phenomena that are necessary for accurately describe such high-amplitude waves, indispensable for explain other exotic acoustic waves and mandatory for developing new applied techniques based on nonlinear processes. In this Thesis we study the interactions between nonlinearity and other basic wave pheno

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Polat, Ozgur Murat. "Ray Anlaysis Of Electromagnetic Scattering From Semi-infinite Array Of Dipoles In Free Space." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/2/12608347/index.pdf.

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Electromagnetic wave scattering from a semi-infinite array of dipoles in free space is described by using asymptotic high frequency methods. An electric field integral expression is obtained and solved with asymptotic high frequency methods. An asymptotic field expression is obtained for a finite &times<br>infinite array of dipoles in free space. The analytical closed form expression for the array guided surface wave launching coefficient is obtained via a combination of an asymptotic high frequency analysis of a related reciprocal problem and Lorentz reciprocity integral formulation for the s

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Cui, Xian. "Efficient radio frequency power amplifiers for wireless communications." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1195652135.

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