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Dissertations / Theses on the topic 'Array of antennas'

Author: Grafiati

Published: 7 July 2024

Last updated: 31 July 2025

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1

Leonard, Cathy Wood. "Optical feeds for phased array antennas." Thesis, Virginia Polytechnic Institute and State University, 1988. http://hdl.handle.net/10919/80079.

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This thesis investigates optical feed methods for phased array antennas. The technical and practical limitations are analyzed and an optimum design is determined. This optimum optical feed is a two-beam interferometric approach which uses acoustooptic phase control. The theory is derived; a computer model is developed; and the limitations are determined. Design modifications are suggested which reduce limitations and greatly extend the range of applications.<br>Master of Science

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2

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.

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Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, December 2004.<br>Thesis advisor(s): David C. Jenn, Siew Yam Yeo. Includes bibliographical references (p. 63-64). Also available online.

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3

Alsawaha, Hamad Waled. "Synthesis of Ultra-Wideband Array Antennas." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/54553.

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Acquisition of ultra-wideband signals by means of array antennas requires essentially frequency-independent radiation characteristics over the entire bandwidth of the signal in order to avoid distortions. Factors contributing to bandwidth limitation of arrays include array factor, radiation characteristics of the array element, and inter-element mutual coupling. Strictly speaking, distortion-free transmission or reception of ultra-wideband signals can be maintained if the magnitude of the radiated field of the array remains constant while its phase varies linearly with frequency over the bandw

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4

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.

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Thesis (M.S. in Engineering Science (Electrical Engineering)--Naval Postgraduate School, December 2003.<br>Thesis advisor(s): David C. Jenn, Roberto Cristi. Includes bibliographical references (p. 75-76). Also available online.

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5

Scattone, Francesco. "Phased array antenna with significant reduction of active controls." Thesis, Rennes 1, 2015. http://www.theses.fr/2015REN1S168/document.

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L'objectif de cette thèse est d'exploiter les phénomènes des ondes de fuite pour améliorer les performances des antennes classiques à ouverture pour les applications spatiales. Ici, nous considérons des configurations planaires où les ondes de fuite sont excitées entre un plan de masse et un superstrat partiellement réfléchissant. Des réseaux de petites ouvertures sur le plan de masse sont utilisés pour alimenter les antennes considérées. Les structures avec superstrat sont développées en configuration réseaux simples ou réseaux à commande de phase, considérées intéressantes en termes de flexi

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6

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.

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7

Bertulli, 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/.

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8

Li, 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.

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Thesis (Ph.D.)--City University of Hong Kong, 2006.<br>"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)

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9

Hee, Ta Wei. "Wide bandwidth conformal array antennas." Thesis, University of Birmingham, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.521971.

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10

Davids, 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.

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Thesis (MTech (Electrical Engineering))--Cape Peninsula University of Technology, 2009<br>This 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 squinte

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11

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.

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In this dissertation, the operation of dual-linear polarized antennas is considered in order to provide ideal performance suited for several applications including polarimetric synthetic aperture radar (SAR), wireless and satellite communications. The underlying objectives realized in this work are reported as design realizations of dual-linear polarized antennas with low cross polarization patterns and high isolation between ports that employ special properties of the electromagnetic metamaterial (MTM) structures. Some of these key properties appear as negative permittivity, negative permeabi

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12

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.

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13

Uhl, Brecken. "Direct Spatial Antenna Modulation for Phased-Array Applications." International Foundation for Telemetering, 2009. http://hdl.handle.net/10150/606129.

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ITC/USA 2009 Conference Proceedings / The Forty-Fifth Annual International Telemetering Conference and Technical Exhibition / October 26-29, 2009 / Riviera Hotel & Convention Center, Las Vegas, Nevada<br>New 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

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14

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.

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Dual-band antenna elements that support dual-polarization provide ideal performance for applications including space-based platforms, multifunction radar, wireless communications, and personal electronic devices. In many communications and radar applications, a dual-band, dual-polarization antenna array becomes a requirement in order to produce an electronically steerable, directional beam capable of supporting multiple functions. The multiple polarizations and frequency bands allow the array to generate multiple simultaneous beams to support true multifunction radar. Many of the applications

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15

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/.

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16

Persson, 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.

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Today there is a great need for communication between people and even between things, using systems onboard e.g. aircraft, cars, ships and satellites. As a consequence, these communications needs require antennas mounted on or integrated in the surfaces of different vehicles or platforms, i.e. conformal antennas. In order to ensure proper operation of the communication systems it is important to be able to determine the characteristics of these antennas. This thesis is about the analysis and design of conformal antennas using high frequency asymptotic methods. Commonly used eigenfunction solut

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17

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.

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18

Darwood, 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.

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19

MOREIRA, 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.

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Este estudo tem como tema a análise dos campos radiados por um conjunto de alimentadores para a iluminação de um sistema único refletor embarcado em satélite, utilizando para a produção de diagramas modelados. É usada uma técnica para o tratamento do acoplamento mútuo entre os campos de aberturas retangulares num plano condutor elétrico infinito, de forma que os alimentadores aqui tratados serão guias retangulares abertos e cornetas piramidais. Uma formulação assintótica inédita foi desenvolvida para o aclopamento entre duas aberturas afastadas entre si. Como aplicação foram realizad

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20

Marantis, L. "Spherical array antennas for LEO satellite communications." Thesis, University College London (University of London), 2014. http://discovery.ucl.ac.uk/1449259/.

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The trend in the construction of the latest array antennas is such, that electronic beam scanning can be conducted for a significantly large angular sector. Indeed, as far as circular array antennas are concerned, the quality of the radiation pattern will not be impaired when scanned in the full azimuthal axis. Compared to planar and several different shapes of conformal antenna arrays, spherical array antennas have the unique property of scanning their beam with no deterioration in full spherical coverage (i.e. azimuth and elevation axes). Furthermore, multi-beam functioning and direction fin

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21

Zhang, Piyou. "Slotted Spiral Antennas and Widebandwidth Array Systems." University of Cincinnati / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1222311888.

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22

De, Witte E. "Design and development of spherical array antennas." Thesis, University College London (University of London), 2007. http://discovery.ucl.ac.uk/1446227/.

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Array antennas have been developed that can achieve electronic beamsteering over wide angles. With circular array antennas, a radiation pattern can be steered over 360 azimuthal degrees without pattern deterioration. Some applications may require an omnidirectional beamsteering capability in azimuth as well as in elevation, with antenna characteristics that are independent from the direction of the beam. To achieve this without mechanical actuators requires an antenna that is homeomorphic to the sphere. Spherical array antennas are the 3-dimensional equivalent of circular array antennas and of

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23

Middlebrook, Christopher. "INFRARED ANTENNA-COUPLED PHASED-ARRAY." Doctoral diss., University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3266.

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Phased-array antennas are commonplace in the radiofrequency portion of the electromagnetic spectrum. Exploitation of phasing effects between multiple antennas facilitates a wide range of applications, including synthetic-aperture radar, beam forming, and beam scanning. For the first time, the phased addition of multiple dipole antennas is demonstrated in the infrared, at a wavelength of 10.6 micrometers. Coplanar strip lines are used to interconnect the antennas, preserving the phase of the individual contributions. Several different proof-of-concept experiments are performed, using planar ant

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24

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.

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25

Ong, 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.

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Thesis (M.S. in Engineering Science)--Naval Postgraduate School, December 2003.<br>Thesis advisor(s): David C. Jenn, Roberto Cristi. Includes bibliographical references (p. 95). Also available online.

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26

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/.

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Thesis (M. S.)--Mechanical Engineering, Georgia Institute of Technology, 2006.<br>Dr. Jonathan Colton, Committee Chair ; Dr. John Muzzy, Committee Member ; Dr. Daniel Baldwin, Committee Member ; Dr. John Schultz, Committee Member.

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27

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.

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This thesis considers problems related to the design and the analysis of wide-angle scanning phased arrays. The goals of the thesis are the design and analysis of antenna elements suitable for wide-angle scanning array antennas, and the study of scan blindness effects and edge effects for this type of antennas. Wide-angle scanning arrays are useful in radar applications, and the designs considered in the thesis are intended for an airborne radar antenna.After a study of the wide-angle scanning limits of three candidate elements, the tapered-slot was chosen for the proposed application.A tapere

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28

Li, Wenting. "Design of printed array antennas for wireless communications." Thesis, University of Kent, 2018. https://kar.kent.ac.uk/71528/.

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Compared to parabolic reflector antennas, printed array antennas have compact size, light weight and low cost. Many printed array antennas have been reported in the literature, but there are lots of challenges remaining. For example, how to achieve polarization-reconfigurable circularly polarized (CP) array antennas? How to reduce the thickness of folded reflectarray CP antennas? How to increase the bandwidth of reflectarray antennas? How to achieve multi-beam radiation? To tackle these challenges, several novel designs of printed array antennas are proposed in this dissertation. First, a nove

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29

Barros, Sara Pena. "OFDM for data distribution in phased array antennas." Master's thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/12879.

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Mestrado em Engenharia Eletrónica e Telecomunicações<br>Currently, 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 determi

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30

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.

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Thesis (M.S.)--University of California, San Diego, 2008.<br>Title from first page of PDF file (viewed Nov. 6, 2008). Available via ProQuest Digital Dissertations. Includes bibliographical references (p. 123-125).

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31

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.

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Thesis (M.S. in Systems Engineering)--Naval Postgraduate School, September 2003.<br>Thesis advisor(s): David C. Jenn, Richard W. Adler. Includes bibliographical references (p. 71-72). Also available online.

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32

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.

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33

Hock, Chua Eng. "Reduction of mutual coupling in small dipole array antenna." Thesis, Monterey, California. Naval Postgraduate School, 2003. http://hdl.handle.net/10945/1130.

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The mutual coupling in phased array is a well-known phenomenon. It affects the active element pattern of the array as the phase of the individual element is altered. In an array that has many elements, the effect is identical for all the elements that are nearer to the center of the antenna, thus allowing a more predictable scan performance with respect to the phase of the elements. However, in a small array that has only three elements, the active element pattern for the elements at the end can be significantly different from the center element and this affects the predictability of operation

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34

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.

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35

Belentepe, Bilge. "Electromagnetically coupled microstrip patch antenna array design." Thesis, University of Surrey, 1993. http://epubs.surrey.ac.uk/842825/.

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This work is an effort to investigate and derive a simple equivalent circuit model to represent an electromagnetically coupled microstrip patch antenna. This provides a simple approach to the complicated electromagnetic coupling behaviour in the patch. A simplified theory based on the broadside coupled line and improved transmission line theories is developed to derive the equivalent circuit of EM coupled patch antenna. The design parameters are determined from the above mentioned theory. Computer programs are developed to provide a practical design of such antennas without involving complicat

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36

Arnott, Robert. "Array processing for digital mobile radio." Thesis, Imperial College London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338780.

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37

McCann, 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.

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38

Parfitt, 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.

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39

Huysamen, Johan Herman. "Electrically small planar antenna for circular polarization /." Link to the online version, 2007. http://hdl.handle.net/10019/1047.

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40

Irci, 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.

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41

Yeo, Chee Beng. "Effects of mutual coupling in small dipole array antennas." Thesis, Monterey, California. Naval Postgraduate School, 2002. http://hdl.handle.net/10945/5999.

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Approved for public release, distribution is unlimited<br>Approved for public release, distribution is unlimited<br>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 a

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42

McColl, Iain. "Radiating and coupling elements in waveguide planar array antennas." Thesis, Heriot-Watt University, 1992. http://hdl.handle.net/10399/788.

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43

Uchendu, Iyemeh E. "Passive amplitude and hybrid parasitic beam steerable array antennas." Thesis, University of Surrey, 2018. http://epubs.surrey.ac.uk/845688/.

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Highly directive antennas with beam steering capabilities are needed to overcome high path-loss, mitigate against interference from unwanted signals and to ensure network connectivity for the next generation 5G millimetre wave communication systems. Phased arrays using phase shifters are the conventional approach of achieving beam steerable antennas. However, due to the insertion loss incurred by phase shifters and the high cost of acquiring phase shifters, alternative solutions that offers lower loss and cost are being researched. This work proposes two beam steerable antenna solutions that o

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44

Hussain, 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.

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A novel quantitative measure for predicting the performance of arrays is tested on a few selected wide band arrays. This measure is called the array figure of merit. It is valid for lin-early polarized, infinite planar arrays, which are backed by a perfectly conducting ground plane. It predicts performance of arrays (which are free from grating lobes) in the E- or H-plane. The array figure of merit builds on the low frequency asymptotic expansion of the reflection coefficient and a sumrule of Rozanov type for passive structures. This measuretakes values between zero and one, and estimates arra

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45

Gonzalez, 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.

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University of Central Florida College of Engineering Thesis<br>In 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 co

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46

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.

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47

Varum, Tiago Miguel Valente. "Nonuniform 2D microstrip antenna arrays for wireless applications." Doctoral thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/17373.

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Doutoramento em Engenharia Electrotécnica<br>Wireless 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 wireles

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48

Hartup, David Carl. "Emitter identification using optical processors." Diss., Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/15672.

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49

Fofana, 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.

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Cette thèse présente la conception, réalisation et mesure d’un réseau d’antennes reconfigurable dans la bande 3,4-3,8 GHz. Le réseau actif est composé de 16 dipôles à double polarisation qui peuvent rayonner un faisceau pouvant dépointer dans un plan sur un secteur angulaire de ±45°. Grâce à l’utilisation d’un générateur de signaux arbitraires, deux faisceaux pointant dans deux directions peuvent être rayonnés simultanément à deux fréquences différentes et reconfigurés à souhait. Ce réseau peut être vu comme un candidat pour de futurs systèmes de communication terrestre. Deux opérateurs mobile

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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.

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Thesis (Ph. D.)--University of Missouri--Rolla, 2007.<br>Vita. 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).

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