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Relevant bibliographies by topics / Antenna pattern synthesis / Dissertations / Theses

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Dissertations / Theses on the topic 'Antenna pattern synthesis'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Zhou, Philip Yuanping. "Array pattern synthesis and adaptive beamforming with pattern control." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/13725.

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2

Nagesh, S. R. "Synthesis of Arbitrary Antenna Arrays." Thesis, Indian Institute of Science, 1995. https://etd.iisc.ac.in/handle/2005/160.

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Design of antenna arrays for present day requirements has to take into account both mechanical and electrical aspects. Mechanical aspects demand the antennas to have low profile, non-protruding structures, structures compatible to aerodynamic requirements and so on. Electrical aspects may introduce several constraints either due to. technical reasons or due to readability conditions in practice. Thus, arrays of modern requirements may not fall into the category of linear or planar arrays. Further, due to the nearby environment, the elements will generate complicated individual patterns. These

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3

Nagesh, S. R. "Synthesis of Arbitrary Antenna Arrays." Thesis, Indian Institute of Science, 1995. http://hdl.handle.net/2005/160.

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Design of antenna arrays for present day requirements has to take into account both mechanical and electrical aspects. Mechanical aspects demand the antennas to have low profile, non-protruding structures, structures compatible to aerodynamic requirements and so on. Electrical aspects may introduce several constraints either due to. technical reasons or due to readability conditions in practice. Thus, arrays of modern requirements may not fall into the category of linear or planar arrays. Further, due to the nearby environment, the elements will generate complicated individual patterns. These

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4

Moraal, Reinart Johan. "Pattern synthesis and design of a microstrip wire grid monopulse antenna." Diss., University of Pretoria, 2017. http://hdl.handle.net/2263/62783.

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The design of a monopulse microstrip wire grid antenna array is presented with simultaneously low side lobe levels in the sum pattern as well as both azimuth difference and elevation difference patterns. Monopulse antennas are a class of antennas used for direction finding in radar systems, and the control of side lobe levels is important to help with clutter rejection. The microstrip wire grid array is ideally suited to monopulse applications, and it has been shown in the literature that side lobes can be lowered by implementing an excitation taper across the aperture. Although it has been de

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5

Sherkat, Navid. "Approximation of Antenna Patterns With Gaussian Beams in Wave Propagation Models." Thesis, Linnéuniversitetet, Institutionen för datavetenskap, fysik och matematik, DFM, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-14437.

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The topic of antenna pattern synthesis, in the context of beam shaping, is considered. One approach to this problem is to use the method of point matching. This method can be used to approximate antenna patterns with a set of uniformly spaced sources with suitable directivities. One specifies a desired antenna pattern and approximates it with a combination of beams. This approach results in a linear system of equations that can be solved for a set of beam coefficients. With suitable shifts between the matching points and between the source points, a good agreement between the assumed and the r

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6

Khan, Asim Ali. "Performance optimisation of small antenna arrays." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/performance-optimisation-of-small-antenna-arrays(759e6929-04ab-408c-aee3-404c72711cdb).html.

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This thesis addresses radiation pattern synthesis problems for small linear periodic phased arrays (with array elements less then 10). Due to the small array size conventional pattern synthesis techniques fail to produce the required results. In the case of practical small arrays, mutual coupling and element pattern asymmetric effect degrade the array radiation performance. The main performance metrics considered in this thesis include side lobe level (SLL), gain, halfpower beamwidth (HPBW) and mainbeam scan direction. The conventional pattern synthesis approaches result in sub optimal gain, S

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7

Gagnon, Nicolas. "Phase Shifting Surface (PSS) and Phase and Amplitude Shifting Surface (PASS) for Microwave Applications." Thesis, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/19826.

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This thesis describes an electrically thin surface used for electromagnetic applications in the microwave regime. The surface is free-standing and its primary purpose is to modify the phase distribution, or the phase and amplitude distribution of electromagnetic fields propagating through it: it is called phase shifting surface (PSS) in the first case, and phase and amplitude shifting surface (PASS) in the second case. For practical applications, the surface typically comprises three or four layers of metallic patterns spaced by dielectric layers. The patterns of the metallic layers are design

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8

Buttazzoni, Giulia. "Study and development of power synthesis techniques of arbitrary reconfigurable antenna arrays for satellite applications." Doctoral thesis, Università degli studi di Trieste, 2013. http://hdl.handle.net/10077/8536.

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2010/2011<br>The material presented in this thesis is the result of the Ph.D. activity carried on between January 2009 and December 2012 at the Ph.D. school in Information Engineering of the University of Trieste. After a brief introduction on the involved topics, the final objective of this thesis is that of presenting the original results, consisting in the development of power pattern synthesis algorithms for arbitrary antenna arrays including, in particular, arrays for satellite applications. Since the earlier satellite missions of last century, satellite communication systems have rece

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9

Martin, Denis. "Le dipole imprime alimente par couplage electromagnetique a une ligne microruban : synthese et realisation de reseaux a lobes de rayonnement formes." Rennes, INSA, 1988. http://www.theses.fr/1988ISAR0004.

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Cette these decrit la synthese de reseaux lineaires de dipoles couples electromagnetiquement (dipoles c. E. M. ) avec prise en compte des couplages. Cette synthese est ensuite appliquee a la realisation d'un diagramme de rayonnement forme du type depression spherique

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10

Sayyah, Jahromi Mohammad Reza Information Technology &amp Electrical Engineering Australian Defence Force Academy UNSW. "Efficient broadband antenna array processing using the discrete fourier form transform." Awarded by:University of New South Wales - Australian Defence Force Academy. School of Information Technology and Electrical Engineering, 2005. http://handle.unsw.edu.au/1959.4/38690.

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Processing of broadband signals induced on an antenna array using a tapped delay line filter and a set of steering delays has two problems. Firstly one needs to manipulate large matrices to estimate the filter coefficients. Secondly the use of steering delays is not only cumbersome but implementation errors cause loss of system performance. This thesis looks at both of these problems and presents elegant solutions by developing and studying a design method referred to as the DFT method, which does not require steering delays and is computationally less demanding compared to existing methods.

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11

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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12

Lau, Buon Kiong. "Applications of Adaptive Antennas in Third-Generation Mobile Communications Systems." Thesis, Curtin University, 2002. http://hdl.handle.net/20.500.11937/2019.

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Adaptive antenna systems (AAS's) are traditionally of interest only in radar and sonar applications. However, since the onset of the explosive growth in demand for wireless communications during the 1990's, researchers are giving increasing attention to the use of AAS technology to overcome practical challenges in providing the service. The main benefit of the technology lies in its ability to exploit the spatial domain, on top of the temporal and frequency domains, to improve on transceiver performance. This thesis presents a unified study on two classes of preprocessing techniques for unifor

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13

Lau, Buon Kiong. "Applications of Adaptive Antennas in Third-Generation Mobile Communications Systems." Curtin University of Technology, Australian Telecommunications Research Institute, 2002. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=12983.

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Adaptive antenna systems (AAS's) are traditionally of interest only in radar and sonar applications. However, since the onset of the explosive growth in demand for wireless communications during the 1990's, researchers are giving increasing attention to the use of AAS technology to overcome practical challenges in providing the service. The main benefit of the technology lies in its ability to exploit the spatial domain, on top of the temporal and frequency domains, to improve on transceiver performance. This thesis presents a unified study on two classes of preprocessing techniques for unifor

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14

Cuiñas, Gómez Íñigo, Luis Landesa, and Pino Marcos Rodríguez. "Using wavelets in applied electromagnetics : an algorithm for efficient pattern synthesis of linear aperture antennas." Pontificia Universidad Católica del Perú, 2014. http://repositorio.pucp.edu.pe/index/handle/123456789/97009.

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Pattern synthesis of linear aperture antennas is a classical problem in Applied Electromagnetics with a great number of resolving methods. In this paper, a new algorithm that uses wavelets to compute the solution is presented. The new method reaches a good approximation of the aperture field from the antenna radiation pattern, using the Haar wavelet basis. Results prove the performance of the proposed method.

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15

Meng, Xiangjun. "A synthesis technique for radial line slot array antennas with isoflux radiation patterns." Thesis, University of Ottawa (Canada), 2009. http://hdl.handle.net/10393/28325.

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In this thesis the possibility of using radial line slot array (RLSA) antennas to provide low profile isoflux radiation patterns suitable for use as circularly-polarized tracking, telemetry & command (TT&C) antennas on low Earth orbit (LEO) satellites is investigated. The RLSA antenna elements are slot pairs located on concentric circles on the top plate of a radial waveguide. Conventional synthesis techniques cannot be used due to the fact that the RLSA antenna is a non-uniformly spaced array, the elements do not all have the same orientation, and the excitation amplitudes and phases are link

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16

Mehmood, Rashid. "A Study of Reconfigurable Antennas as a Solution for Efficiency, Robustness, and Security of Wireless Systems." BYU ScholarsArchive, 2015. https://scholarsarchive.byu.edu/etd/5556.

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The reconfigurable aperture (RECAP) is a reconfigurable antenna consisting of a dense array of electronically controlled elements, which can be manipulated to support many antenna functions within a single architecture. RECAPs are explored herein as an enabling technology for future software defined and cognitive radio architectures, as well as compact wireless devices supporting many bands and services. First, the concept of a parasitic RECAP is developed and analyzed for various communication applications. This begins with the analysis of existing RECAP topologies (e.g. planar and parasitic)

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17

Wu, Chih-Heng, and 吳至恒. "Study of pattern-synthesis optimization of antenna arrays." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/71054997100013010199.

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碩士<br>國立雲林科技大學<br>通訊工程研究所碩士班<br>99<br>In this study, we focused on optimizing the radiation pattern of a linear antenna array, hoping that with the array elements appropriately excited the antenna array can produce a desired, or nearest to the desired, radiation pattern. First, we proposed an algorithm that was modified from a traditional iterative Taguchi’s method. In the traditional algorithm, no randomness is involved. Hence, whether or not it converges depends on how some parameters are set when performing the optimization. By contrast, randomness in the reduced rate is embedded into t

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18

Su, Wei De, and 蘇維德. "Pattern Synthesis for Array Antenna by Genetic Algorithms." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/334qzn.

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碩士<br>中正理工學院<br>電機工程研究所<br>86<br>A method of optimal design is proposed for pattern synthesis of array antennas. The output amplitude(magnitude and phase) of each array element is adjusted systematically to approach the required array patterns. The amplitude profiles which fit the array outputs are B-Spline curres or surfaces for a linear or planar arrays, respectively. The output amplitudes of a few array elements are chosen as control amplitudes and set to some initial values. The control amplitudes determine the profile and thus the array pattern. Genetic algorithms, an optima

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19

Satish, Kumar Reddy M. V. "Cosecant Square Pattern Synthesis with Conformal Antenna Arrays." Thesis, 2015. http://ethesis.nitrkl.ac.in/7430/1/2015_Consecent_MV.pdf.

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A modern high-speed aircraft will be installed with more than 25 antennas protruded from its structure for communication purpose, navigation, Instrumental Landing System etc. These multiple antennas can cause a considerable amount of drag that will ultimately affect the efficiency of aircraft. Nowadays, integration of antennas on the surface of the aircraft is very much essential. So conformal arrays are well suitable for such applications. In this work, spherical, cylindrical and conical shaped antenna arrays have been modeled and discussed in detail. Further, these antenna arrays have been u

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20

CHEN, JIAN-HONG, and 陳建宏. "Synthesis of the cosecant squared pattern using microstrip antenna arrays." Thesis, 1991. http://ndltd.ncl.edu.tw/handle/96767366214658973824.

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21

Baranwal, A. K. "An approach for shaped-beam pattern synthesis with spherical antenna array." Thesis, 2014. http://ethesis.nitrkl.ac.in/5553/1/e-thesis_26.pdf.

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A modern high-speed aircraft will be installed with multiple antennas protruded from its structure for communication purpose, navigation, Instrumental Landing System etc. There may be more than 25 antennas that can cause considerable amount of drag that will ultimately affect the efficiency of aircraft. Nowadays, integration of these antenna on the surface of the aircraft is very much required and important. Need of these antenna will be more pronounced when large-aperture antennas are required in applications like military airborne radars,satellite communication etc. In this work, spherical s

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22

Wu, Shin-Ru, and 吳信儒. "STUDIES ON VERSATILE PATTERN SYNTHESIS ALGORITHMS FOR ONE DIMENSIONAL ANTENNA ARRAY SYSTEMS." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/457y9e.

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博士<br>元智大學<br>通訊工程學系<br>106<br>The adaptive pattern control algorithms for both linear and non-linear one-dimensional array have been proposed in this dissertation. First, the proposed algorithm with low computational complexity in O(N^2) will be discussed, where N is the number of antenna elements. The algorithm thus is easily implemented by the hardware to achieve the real-time signal processing in practical operation. Second, the pattern control algorithm for non-linear one-dimensional arrays will be discussed. By introducing the Fast Fourier transform (FFT), the computational complexity

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23

Liao, Wen-Pin, and 廖文聘. "Application of genetic algorithms in pattern synthesis with null steering of antenna arrays." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/09126308216694941657.

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24

De, Villiers Abraham C. "An alternative approach to the evaluation of poynting vector synthesis." 2014. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001342.

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M. Tech. Electrical Engineering.<br>Produces findings, based on scientific methods, to verify or refute electromagnetic propagation, generated with Synthetic Poynting Vector formation, that will enable small but efficient electrical antennas.

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