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Novel Hybrid Methods for Reflectarrays and Nontimed Arrays in Satellite Communications
Novel Hybrid Methods for Reflectarrays and Nontimed Arrays in Satellite Communications
Novel Hybrid Methods for Reflectarrays and Nontimed Arrays in Satellite Communications

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20260202105539
ISBN  
9798265402318
DDC  
000
저자명  
Roper, Joshua S.
서명/저자  
Novel Hybrid Methods for Reflectarrays and Nontimed Arrays in Satellite Communications
발행사항  
[Sl] : Georgia Institute of Technology, 2023
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2023
형태사항  
145 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
주기사항  
Advisor: Peterson, Andrew F.
학위논문주기  
Thesis (Ph.D.)--Georgia Institute of Technology, 2023.
초록/해제  
요약Hybrid methods for the design and analysis of reflectarrays and non-timed arrays are proposed. These hybrid methods seek to address fundamental challenges facing the use of reflectarrays or phased arrays in satellite communications, given recent industry trends. Specifically, this dissertation addresses: 1) reflectarray unit-cell design for wideband and circular polarization, 2) a method of far field computation given power handling and sidelobe accuracy considerations, 3) modeling and mitigation of time-delay error for non-timed arrays, and 4) preliminary research on a machine learning-based antenna pointing and tracking algorithm. Each hybrid method is presented in a theoretical framework with algorithmic implementation details and simulation results; these results are validated using rigorous solution techniques or commercial full-wave solvers to prove, by comparison, the hybrid methods accuracy and viability. All of these results are based on original, peer-reviewed, and published research by the author. The findings of this work suggest that by employing the proposed hybrid methods therein, an adaptive reflectarray or non-timed array can be fully designed and characterized for highperformance satellite communications in ways that were before not possible.
일반주제명  
Earth stations
일반주제명  
Receivers & amplifiers
일반주제명  
Satellite communications
일반주제명  
Adaptability
일반주제명  
Bandwidths
일반주제명  
Frequencies
일반주제명  
Signal processing
일반주제명  
Spectrum allocation
일반주제명  
Radiation
일반주제명  
Error correction & detection
일반주제명  
Atmosphere
일반주제명  
Antennas
일반주제명  
Design
일반주제명  
Power supply
일반주제명  
Aperture
일반주제명  
Geometry
일반주제명  
Aerospace engineering
일반주제명  
Computer science
일반주제명  
Electrical engineering
일반주제명  
Optics
일반주제명  
Electromagnetics
기타저자  
Georgia Institute of Technology.
기본자료저록  
Dissertations Abstracts International. 87-05B.
전자적 위치 및 접속  
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MARC

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■1001  ▼aRoper,  Joshua  S.
■24510▼aNovel  Hybrid  Methods  for  Reflectarrays  and  Nontimed  Arrays  in  Satellite  Communications
■260    ▼a[Sl]▼bGeorgia  Institute  of  Technology▼c2023
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2023
■300    ▼a145  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-05,  Section:  B.
■500    ▼aAdvisor:  Peterson,  Andrew  F.
■5021  ▼aThesis  (Ph.D.)--Georgia  Institute  of  Technology,  2023.
■520    ▼aHybrid  methods  for  the  design  and  analysis  of  reflectarrays  and  non-timed  arrays  are  proposed.  These  hybrid  methods  seek  to  address  fundamental  challenges  facing  the  use  of  reflectarrays  or  phased  arrays  in  satellite  communications,  given  recent  industry  trends.  Specifically,  this  dissertation  addresses:  1)  reflectarray  unit-cell  design  for  wideband  and  circular  polarization,  2)  a  method  of  far  field  computation  given  power  handling  and  sidelobe  accuracy  considerations,  3)  modeling  and  mitigation  of  time-delay  error  for  non-timed  arrays,  and  4)  preliminary  research  on  a  machine  learning-based  antenna  pointing  and  tracking  algorithm.  Each  hybrid  method  is  presented  in  a  theoretical  framework  with  algorithmic  implementation  details  and  simulation  results;  these  results  are  validated  using  rigorous  solution  techniques  or  commercial  full-wave  solvers  to  prove,  by  comparison,  the  hybrid  methods  accuracy  and  viability.  All  of  these  results  are  based  on  original,  peer-reviewed,  and  published  research  by  the  author.  The  findings  of  this  work  suggest  that  by  employing  the  proposed  hybrid  methods  therein,  an  adaptive  reflectarray  or  non-timed  array  can  be  fully  designed  and  characterized  for  highperformance  satellite  communications  in  ways  that  were  before  not  possible.
■590    ▼aSchool  code:  0078.
■650  4▼aEarth  stations
■650  4▼aReceivers  &  amplifiers
■650  4▼aSatellite  communications
■650  4▼aAdaptability
■650  4▼aBandwidths
■650  4▼aFrequencies
■650  4▼aSignal  processing
■650  4▼aSpectrum  allocation
■650  4▼aRadiation
■650  4▼aError  correction  &  detection
■650  4▼aAtmosphere
■650  4▼aAntennas
■650  4▼aDesign
■650  4▼aPower  supply
■650  4▼aAperture
■650  4▼aGeometry
■650  4▼aAerospace  engineering
■650  4▼aComputer  science
■650  4▼aElectrical  engineering
■650  4▼aOptics
■650  4▼aElectromagnetics
■690    ▼a0389
■690    ▼a0538
■690    ▼a0800
■690    ▼a0984
■690    ▼a0544
■690    ▼a0752
■690    ▼a0607
■71020▼aGeorgia  Institute  of  Technology.
■7730  ▼tDissertations  Abstracts  International▼g87-05B.
■790    ▼a0078
■791    ▼aPh.D.
■792    ▼a2023
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360518▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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