Tesis sobre el tema "Array of antennas"
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Leonard, Cathy Wood. "Optical feeds for phased array antennas". Thesis, Virginia Polytechnic Institute and State University, 1988. http://hdl.handle.net/10919/80079.
Texto completoMaster of Science
Ong, Chin Siang. "Digital phased array architectures for radar and communications based on off-the-shelf wireless technologies". Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Dec%5FOng.pdf.
Texto completoThesis advisor(s): David C. Jenn, Siew Yam Yeo. Includes bibliographical references (p. 63-64). Also available online.
Alsawaha, Hamad Waled. "Synthesis of Ultra-Wideband Array Antennas". Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/54553.
Texto completoPh. D.
Eng, Cher Shin. "Digital antenna architectures using commercial off-the-shelf hardware". Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03Dec%5FEng.pdf.
Texto completoThesis advisor(s): David C. Jenn, Roberto Cristi. Includes bibliographical references (p. 75-76). Also available online.
Scattone, Francesco. "Phased array antenna with significant reduction of active controls". Thesis, Rennes 1, 2015. http://www.theses.fr/2015REN1S168/document.
Texto completoThe objective of this thesis is to exploit the leaky-wave phenomena to enhance the performance of classical aperture antennas for space applications. Here, we consider planar configurations where the leaky modes are excited between a ground plane and a partially reflective superstrate. Arrangements of small apertures opening on the ground plane are used to feed the antennas under study. The superstrate-like leaky-wave structures are developed in array or phased array configurations, considered of interest in terms of flexibility of the system for next generation satellite links. In order to efficiently study planar leaky-wave arrays, we have developed an analysis tool based on a Green's function spectral approach. The developed tool allows to precisely analyze the proposed structure by taking into account the impact of the mutual coupling among the elements on the radiation performance of the whole antenna. In addition, it can handle extremely large structures in terms of wavelengths with a small computational effort with respect to commercial tools. In particular, the gain enhancement of leaky-based structures can pave the way to the reduction of the number of elements of the associated phased arrays. In a leaky-wave configuration each element of the array will radiate with a larger equivalent aperture allowing a larger spacing among elements without affecting the final gain of the whole structure. This aspect is particularly important in the case of phased arrays, where phase shifters and control cells are, typically, the most expensive components of the system. As extensively explained in the manuscript, antennas for user segment might find the highest benefit by using leaky-wave solutions. Besides the gain enhancement, the leaky-wave technology can be effectively exploited to conveniently shape the radiation pattern by properly engineering the design parameters of the antenna. This capability can be used in phased arrays to generate a convenient element pattern to minimize the scan losses and filter the grating lobes appearing in the visible space when dealing with periodicities larger than a wavelength. Therefore, a synthesis procedure for thinned leaky-wave arrays is presented in the manuscript. Also, a novel array configuration, the irregular superstrate array, is presented. The irregular superstrate allows the reduction of the side lobes of the antenna below -20 dB in the considered 2.5 % band, using a uniform excitation. This last configuration clearly shows that the shaping capability of leaky-wave antennas is the most appealing feature to be used in phased array solutions
Sundaram, Ananth Ramadoss Ramesh. "Electronically Steerable Antenna Array using PCB-based MEMS Phase Shifters". Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Summer/Theses/SUNDARAM_ANANTH_51.pdf.
Texto completoBertulli, Scott. "MATLAB-Based Dipole Array Simulator Tool For MIT Haystack Observatory". Link to electronic thesis, 2005. http://www.wpi.edu/Pubs/ETD/Available/etd-050505-104840/.
Texto completoLi, Pei. "Novel wideband dual-frequency L-probe fed patch antenna and array /". access abstract and table of contents access full-text, 2006. http://libweb.cityu.edu.hk/cgi-bin/ezdb/thesis.pl?phd-ee-b21471447a.pdf.
Texto completo"Submitted to Department of Electronic Engineering in partial fulfillment of the requirements for the degree of Doctor of Philosophy" Includes bibliographical references (leaves 179-189)
Hee, Ta Wei. "Wide bandwidth conformal array antennas". Thesis, University of Birmingham, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.521971.
Texto completoDavids, Vernon Pete. "Implementation of a wideband microstrip phased array antenna for X-band radar applications". Thesis, Cape Peninsula University of Technology, 2009. http://hdl.handle.net/20.500.11838/1100.
Texto completoThis thesis presents the design, analysis and implementation of an eight-element phased array antenna for wideband X-band applications. The microstrip phased array antenna is designed using eight quasi-Yagi antennas in a linear configuration and is printed on RT/Duroid 6010LM substrate made by Rogers Corporation. The feeding network entails a uniform beamforming network as well as a non-uniform -25 dB Dolph-Tschebyscheff beamforming network, each with and without 45° delay lines, generating a squinted beam 14° from boresight. Antenna parameters such as gain, radiation patterns and impedance bandwidth (BW) are investigated in the single element as well as the array environment. Mutual coupling between the elements in the array is also predicted. The quasi-Yagi radiator employed as radiating element in the array measured an exceptional impedance bandwidth (BW) of 50% for a S11 < -10 dB from 6 GHz to 14 GHz, with 3 dB to 5 dB of absolute gain in the frequency range from 8 GHz to 11.5 GHz. The uniform broadside array measured an impedance BW of 20% over the frequency band and a gain between 9 dB to 11 dB, whereas the non-uniform broadside array measured a gain of 9 dB to 11 dB and an impedance BW of 14.5%. Radiation patterns are stable across the X-band. Beam scanning is illustrated in the E-plane for the uniform array as well as for the non-uniform array.
Aqbi, Sadiq. "Improving the Performance of Dual Linear Polarization Antennas with Metamaterial Structures". Doctoral thesis, Universitätsbibliothek Chemnitz, 2018. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-233539.
Texto completoIn der folgenden Dissertation wird der Einsatz von zweifach linear polarisierten Antennen zur idealen Ausführung von verschiedenen Anwendungen, einschließlich von polarimetrischen Synthetic Aperture Radar (SAR), kabellose und satellitengestützte Kommunikation, diskutiert. Die Ziele dieser Arbeit werden dargestellt durch die Gestaltung von zweifach linear polarisierten Antennen mit gering Kreuz-Polarisationsmustern und die starke Isolation zwischen den Ports durch die einzigartigen Eigenschaften der Strukturen des elektromagnetischen Metamaterials (electromagnetic metamaterial; MTM). Einige dieser Eigenschaften treten als negative Permittivität, negative Permeabilität, negativer Brechungsindex und als antiparallel Richtungen (Gegenvektor) der Phasen-und Gruppengeschwindigkeit auf. Somit wird die Antennengestaltung auf zwei Frequenzen übertragen, 5,5GHz und 10 GHz, und die Ausführung der zweifach linearen Polarisation wird durch die elektromagnetischen Eigenschaften des MTM illustriert. Weil die Kreuzpolarisationsmuster und starke gegenseitige Koppelung zwischen zwei Input-Ports bei einer zweifach linear polarisierten Antenne große Schwierigkeiten bereiten, werden diese im Großteil der Fachliteratur als Schwerpunkte gesetzt, was zu einer Milderung der Nachteile führte, jedoch dafür die Komplexität der Antennenstruktur zunahm. Die Vielfalt an MTM ist ein bedeutender Teil im Bereich der Antennenforschung einschließlich der Größenverkleinerung, der Verbesserung der Richtcharakteristik und der Strahlensteuerung. Für diesen Zweck werden in dieser Dissertation verschiedenste MTM Strukturen ausgewählt um weitere Verbesserungen der Antennenstruktur zu ermöglichen und gleichzeitig die Einfachheit der Struktur zu bewahren, was mit konventionellen Gestaltungsmethoden nur schwer zu erreichen ist
Ng, Kwong-Tai. "Admittance properties of a slot array with parasitic wire arrays in a stratified medium /". The Ohio State University, 1985. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487259580262744.
Texto completoUhl, Brecken. "Direct Spatial Antenna Modulation for Phased-Array Applications". International Foundation for Telemetering, 2009. http://hdl.handle.net/10150/606129.
Texto completoNew technologies are sought to meet the requirements of evolving telemetry capabilities such as new operating bands, increased test article and ground segment collaboration, and on-the-fly quality of service (QOS) management. Smart antennas may contribute to this evolution by directing signal energy where and when it is needed. Direct spatial antenna modulation (DSAM) represents a new approach to cost-effective smart antennas potentially offering benefits such as post-amplifier modulation, polarization reconfigurability, phase-shifterless phased arrays, oscillator-less frequency conversion, and pre-receiver processing gain. The basic DSAM approach has recently been proven through analysis, simulation, and prototyping, with significant implications for future capabilities.
Dorsey, William Mark. "Low Profile, Printed Circuit, Dual-Band, Dual-Polarized Antenna Elements and Arrays". Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/26683.
Texto completoPh. D.
Da, Silveira Marthinus Willem. "Analysis of spatially distributed adaptive antenna array systems in cellular networks". Pretoria : [s.n.], 2005. http://upetd.up.ac.za/thesis/available/etd-06032005-090336/.
Texto completoPersson, Patrik. "Analysis and Design of Conformal Array Antennas". Doctoral thesis, KTH, Teoretisk elektroteknik, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3290.
Texto completoQC 20100616
Römer, Christian. "Slotted waveguide structures in phased array antennas /". Karlsruhe : IHE, 2008. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=016491138&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
Texto completoDarwood, Peter B. "Pattern synthesis for small phased array antennas". Thesis, University of Bristol, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262843.
Texto completoMOREIRA, FERNANDO JOSE DA SILVA. "FEED ARRAY REFLECTOR ANTENNAS FOR SHAPED BEAMS". PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1992. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=8839@1.
Texto completoThis study aims the analysis of the radiated fields of na array feeding a single reflector system for satellite applications, used to produce shaped beams. It is used a technique for the treatment of the mutual coupling effects between rectangular apertures in an infinite electric conductor plane, so the feeds used are open-ended rectangular waveguides and pyramidal horns. It is also presented a new asymptotic approach for the mutual coupling between far-distanced apertures. In order to study the application of these formulations, some synthesis for the illumination of the Brazilian territory were made.
Marantis, L. "Spherical array antennas for LEO satellite communications". Thesis, University College London (University of London), 2014. http://discovery.ucl.ac.uk/1449259/.
Texto completoZhang, Piyou. "Slotted Spiral Antennas and Widebandwidth Array Systems". University of Cincinnati / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1222311888.
Texto completoDe, Witte E. "Design and development of spherical array antennas". Thesis, University College London (University of London), 2007. http://discovery.ucl.ac.uk/1446227/.
Texto completoMiddlebrook, Christopher. "INFRARED ANTENNA-COUPLED PHASED-ARRAY". Doctoral diss., University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3266.
Texto completoPh.D.
Optics and Photonics
Optics and Photonics
Optics PhD
Najafabadi, Reza M. "Analysis and design of cylindrically conformable microwave phased array antennas for hyperthermia applications". Diss., Georgia Institute of Technology, 1995. http://hdl.handle.net/1853/16473.
Texto completoOng, Chee Hwee. "Modeling of the ring-hybrid dipole antenna and mutual coupling in a small antenna array". Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03Dec%5FOng.pdf.
Texto completoThesis advisor(s): David C. Jenn, Roberto Cristi. Includes bibliographical references (p. 95). Also available online.
Lin, Chih-heng. "Distributed subarray antennas for multifunction phased-array radar". Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03sep%5FLin.pdf.
Texto completoThesis advisor(s): David C. Jenn, Richard W. Adler. Includes bibliographical references (p. 71-72). Also available online.
Pine, Shannon Robert. "Manufacturing structurally integrated three dimensional phased array antennas". Thesis, Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-04062006-115019/.
Texto completoDr. Jonathan Colton, Committee Chair ; Dr. John Muzzy, Committee Member ; Dr. Daniel Baldwin, Committee Member ; Dr. John Schultz, Committee Member.
Ellgardt, Anders. "Wide-angle scanning wide-band phased array antennas". Doctoral thesis, KTH, Elektroteknisk teori och konstruktion, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-10225.
Texto completoQC 20100712
Li, Wenting. "Design of printed array antennas for wireless communications". Thesis, University of Kent, 2018. https://kar.kent.ac.uk/71528/.
Texto completoBarros, Sara Pena. "OFDM for data distribution in phased array antennas". Master's thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/12879.
Texto completoCurrently, all the control data behind the RF front-end modules in phased array radars is transmitted digitally and simultaneously by means of optical ber, resulting in a massive distribution network. The design of cheaper radars requires alternative ways of transmission to be explored. An intuitive and rather straight approach is to take advantage of the already existent RF layer used for the distribution of the radar pulse. The aim of this thesis work is to investigate OFDM as a modulation option for that approach and to determine whether or not it is a viable one. As proof of concept, experimental results are presented and discussed.
Actualmente, toda a informa cão de controlo por detráas dos móodulos T/R (Transmit/ Receive) em radares com phased arrays e transmitida digital e simultaneamente atrav és de fi bra optica, resultando numa rede de distribuiçaõ massiva. Para que se possa reduzir o custo de produção e limitações no design, e fundamental a exploração de alternativas para a transmissão destes dados. Uma ideia intuitiva e que não implica grandes modi ca ções estruturais, e tirar vantagem da j a existente layer de RF (R adio Frequência) usada para distribuição do pulso de radar pelos m ódulos. O objectivo desta tese é investigar OFDM (Orthogonal Frequency Division Multiplexing) como uma das opções para modulação do novo sinal de RF responsável pela informa ção de controlo e determinar se esta é ou não uma escolha vi ável. Como prova de conceito, resultados experimentais serão apresentados e discutidos.
Mahbubani, Shaan Suresh. "Antarctica exploring the capabilities of phased array antennas /". Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2008. http://wwwlib.umi.com/cr/ucsd/fullcit?p1459288.
Texto completoTitle from first page of PDF file (viewed Nov. 6, 2008). Available via ProQuest Digital Dissertations. Includes bibliographical references (p. 123-125).
Lin, Sun James. "On the scan impedance of an array of V-dipoles and the effect of the feedlines /". Connect to resource, 1985. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1209741301.
Texto completoHock, Chua Eng. "Reduction of mutual coupling in small dipole array antenna". Thesis, Monterey, California. Naval Postgraduate School, 2003. http://hdl.handle.net/10945/1130.
Texto completoRepublic of Singapore Navy author.
Chua, Eng Hock. "Reduction of mutual coupling in small dipole array antenna /". Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03Mar%5FChua%5FEngHock.pdf.
Texto completoBelentepe, Bilge. "Electromagnetically coupled microstrip patch antenna array design". Thesis, University of Surrey, 1993. http://epubs.surrey.ac.uk/842825/.
Texto completoArnott, Robert. "Array processing for digital mobile radio". Thesis, Imperial College London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338780.
Texto completoMcCann, John Forrest. "On the design of large bandwidth arrays of slot elements with wide scan angle capabilities". Connect to resource, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1209590321.
Texto completoParfitt, Andrew J. "Substrate supported metal strip antennas for monolithically fabricated millimetre wavelength arrays /". Title page, table of contents and abstract only, 1992. http://web4.library.adelaide.edu.au/theses/09PH/09php2289.pdf.
Texto completoHuysamen, Johan Herman. "Electrically small planar antenna for circular polarization /". Link to the online version, 2007. http://hdl.handle.net/10019/1047.
Texto completoIrci, Erdinc. "Low-Profile Wideband Antennas Based on Tightly Coupled Dipole and Patch Elements". The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1316456337.
Texto completoYeo, Chee Beng. "Effects of mutual coupling in small dipole array antennas". Thesis, Monterey, California. Naval Postgraduate School, 2002. http://hdl.handle.net/10945/5999.
Texto completoApproved for public release, distribution is unlimited
In the classical approach of antenna theories, mutual coupling between elements is usually ignored. However, depending on the application, errors due to mutual coupling can be significant. This thesis investigates the effects of mutual coupling between elements in small dipole arrays via software simulations that use the Methods of Moment, a numerical technique that accounts for mutual coupling, as opposed to the classical approach, which does not. The simulations show that the active impedance of any element in an array depends on both the self and mutual impedances and that the terminal current phases, hence directivity, of an array are affected by mutual coupling such that the array pattern deviates from that defined by classical theoretical approach. In an active element pattern approach, the mutual couplings in an array are accounted for through the active element, making this approach a viable one to study the radiation patterns of practical dipole arrays. The examination of a small array provides a useful environment in which to develop, optimize and evaluate the radiating elements, thus providing better understanding of the effects of mutual coupling in antenna arrays and facilitating the design of corresponding compensation techniques in practical arrays.
McColl, Iain. "Radiating and coupling elements in waveguide planar array antennas". Thesis, Heriot-Watt University, 1992. http://hdl.handle.net/10399/788.
Texto completoUchendu, Iyemeh E. "Passive amplitude and hybrid parasitic beam steerable array antennas". Thesis, University of Surrey, 2018. http://epubs.surrey.ac.uk/845688/.
Texto completoHussain, Nizamudin. "Nizamudin Hussain, Performance Limitations and Estimates for Infinite Array Antennas". Thesis, KTH, Elektroteknisk teori och konstruktion, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-144898.
Texto completoGonzalez, Francisco Javier. "Antenna-coupled infrared focal plane array". Doctoral diss., University of Central Florida, 2003. http://digital.library.ucf.edu/cdm/ref/collection/RTD/id/22899.
Texto completoIn this dissertation a new type of infared focal plan array (IR FPA) was investigated, consisting of antenna-coupled microbolometer fabricated using electron-beam lithography. Four different antenna designs were experimentally demonstrated at 10-micron wavelength: dipole, bowtie, square-spiral, and log-periodic. The main differences between these antenna types were their bandwidth, collection area, angular reception pattern, and polarization. To provide pixel collection areas commensurate with typical IR FPA requirements, two configuration were investigated: a two-dimensional serpentine interconnection of invididual IR antennas, and a Fresnel-zone-plate (FZP) coupled to a single-element antenna. Optimum spacing conditions for the two-dimensional interconnect were developed. Increased sensitivity was demonstrated using a FZP-coupled design. In general, it was found taht the configuration of the antenna substrate material was critical for optimization of sensitivity. The best results were obtained using this membranes of silicon nitride to enhance the thermal isolation of the antenna-coupled bolometers. In addition, choice of the bolometer material was also important, with the best results obtained using vanadium oxide. Using optimum choices for all parameters, normalized sensitivity (D*) values in the range of mid 108 [cm√Hz/W] were demonstrated for antenna-coupled IR sensors, and directions for further improvements were identified. Successful integration of antenna-coupled pixels with commercial readout integrated circuits was also demonstrated.
Ph.D.;
Electrical Engineering and Computer Science;
Engineering and Computer Science;
170 p.
xii, 170 leaves, bound : ill. ; 28 cm.
Bartee, Jon A. "Genetic algorithms as a tool for phased array radar design". Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2002. http://library.nps.navy.mil/uhtbin/hyperion-image/02Jun%5FBartee.pdf.
Texto completoVarum, Tiago Miguel Valente. "Nonuniform 2D microstrip antenna arrays for wireless applications". Doctoral thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/17373.
Texto completoWireless communications have undergone over the last decades a tremendous progress as a consequence of the exponential growth in demand for mobile devices, and nowadays are more and more involved in people's lives. This presence is re ected through the use of a large number of applications of which they become increasingly dependent on. The antenna, in its most di erent forms, are crucial elements in the establishment this type of communication. Each application involves a number of speci c characteristics, whereby, the improvement of wireless communications is related to the appropriateness of the used antenna. Many applications require antennas with radiation pattern with its particular shapes (in terms of beamwidth, side lobes levels, direction, etc ..), static or dynamic (adaptive antennas), involving in most cases the use antenna arrays to meet to such constraints. In this thesis, a number of techniques to synthesize antennas consisting of planar arrays with nonuniform excitation of their elements, are addressed. A group of the direction of arrival and beamforming estimation algorithms are also presented and analyzed, in order to enable their application in adaptive antenna array with dynamic beamforming. A vast and diversi ed set of arrays with di erent radiation requirements, and for di erent applications were developed. These arrays have great applicability in current research topics in antennas, such as vehicle communications, Wi-Fi in sports venues and smart antennas.
As comunicações sem os têm sofrido, ao longo das ultimas décadas, um enorme progresso em consequência do aumento exponencial da procura de dispositivos móveis, estando hoje em dia cada vez mais presentes na vida das pessoas. Esta presença re ete-se através do uso de um elevado número de aplicações das quais se tornam cada vez mais dependentes. As antenas, nas suas mais diversi cadas formas, são elementos cruciais no estabelecimento deste tipo de comunicações. Cada aplicação envolve um conjunto de características especí cas, pelo que a melhoria das comunica ções sem os está relacionada com a adequação da antena usada. Muitas aplicações necessitam de antenas com diagramas de radiação com formatos próprios (em termos de larguras de feixe, níveis de lobos secund ários, direção, etc..), sejam eles estáticos ou dinâmicos (antenas adaptativas), implicando na maioria dos casos o uso de agregados de antenas para fazer face a tais condições. Nesta tese são abordadas várias técnicas de desenho de antenas constituídas por agregados planares, com alimentação não uniforme dos seus elementos. Um conjunto de algoritmos de estimação dos ângulos de chegada e de formação de feixe são também apresentados e analisados com vista à sua aplicação em agregados de antenas adaptativas, com formação de feixe dinâmico. Um vasto e diversi cado conjunto de agregados com diferentes requisitos de radiação, destinados a diferentes aplicações foram desenvolvidos. Estes agregados têm grande aplicabilidade nos atuais tópicos de investiga ção em antenas, tais como as comunicações veiculares, Wi-Fi em espaços desportivos e smart antenas.
Hartup, David Carl. "Emitter identification using optical processors". Diss., Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/15672.
Texto completoFofana, Seydouba. "Conception et mesure d'un réseau d'antennes reconfigurable sur la bande 3,4 - 3,8 GHz : contribution à la réduction de la consommation énergétique". Thesis, Rennes 1, 2020. http://www.theses.fr/2020REN1S031.
Texto completoThis thesis is dedicated to the design, manufacturing and characterization of a reconfigurable antenna array in the 3.4-3.8 GHz band. The active array is composed of 16 dual polarized dipoles that are able to radiate a beam steerable from ± 45° in a plane. Thanks to an arbitrary waveform generator, two beams can be radiated in two directions at two different frequencies simultaneously and can be reconfigured at will. This array can be seen as a candidate for future terrestrial communication systems. Two mobile network operators could then share the same antenna array. The steps of the array design are detailed showing the progression from the single antenna, to the passive array, the reconfigurable array by cluster to finish with the fully reconfigurable array. The array design has been driven by the reduction of the energy consumption. For that purpose, array synthesis tools have been developed to leverage at best the consumption characteristics of amplifiers. A number of measurement results validate experimentally the array radiation performances at each step of the design. Moreover, they demonstrate the achieved reduction of energy consumption and thus validate experimentally the practical interest of the developed synthesis tools
Cracraft, Michael Andrew. "Mobile array designs with ANSERLIN antennas and efficient, wide-band PEEC models for interconnect and power distribution network analysis". Diss., Rolla, Mo. : University of Missouri-Rolla, 2007. http://scholarsmine.umr.edu/thesis/pdf/mcthesis20070623_09007dcc80374999.pdf.
Texto completoVita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed November 16, 2007) Includes bibliographical references (p. 134-136).