Multibeam Phased Array Antennas as Satellite Constellation Ground Station

Multibeam Phased Array Antennas as Satellite Constellation Ground Station PDF

Author: Guolong He

Publisher: Springer Nature

Published: 2023-12-23

Total Pages: 112

ISBN-13: 9819979102

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This book focuses on the multi-beam phased array antenna as a satellite ground station. As there are already many excellent books on phased array antennas in the literature, this book focuses mainly on some engineering practices and fills the gap between principles and practices, such as array excitation error impact analysis and calibration methods, array geometry design for hemispherical coverage, multiple beam resource management, etc. This book is particularly suitable for readers interested in satellite constellation design or satellite ground station design. This book also benefits researchers and engineers in the fields of phased array antennas, aerospace engineering, telecommunications, etc.

Low Cost Multibeam Phased Array Antenna for Communication with

Low Cost Multibeam Phased Array Antenna for Communication with PDF

Author:

Publisher:

Published: 2010

Total Pages: 15

ISBN-13:

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The U.S. Navy uses both military and commercial satellites for communication purposes. In the existing shipboard communications system, a separate antenna, most likely a reflector antenna, is used to communicate with each satellite. In the future, it is expected that these reflector antennas will be replaced by multi-function, low RCS (radar cross section) phased array antennas. In this report, we have designed (based on an existing method suggested by Amitay and Gans) a unique concept in which a single planar array (on a mobile earth station) can be used to communicate simultaneously with several geostationary satellites by generating multiple independent beams. These beams will need to be scanned in only one plane, thus reducing the number of phase shifters required for each beam. In the orthogonal plane, one or two hard-wired squints will be used to fix the beam position. This method will help to reduce the cost and complexity of phased array antennas on mobile earth stations.

Receiving Frequency Diverse Array Antenna for Tracking Low Earth Orbit Satellites

Receiving Frequency Diverse Array Antenna for Tracking Low Earth Orbit Satellites PDF

Author: Issa Elbelazi

Publisher:

Published: 2020

Total Pages: 93

ISBN-13:

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The Frequency Diverse Array (FDA) antenna provides range - angle - time dependentbeampattern, potentially generating highly directional beams with high gain that may besteered directly and continuously to the desired position. This research explores using FDAantenna for tracking a Low Earth Orbit (LEO) satellite. Although FDA array antenna hasbeen growing in use for radar communication systems with advantages of it is electronicallybeam steering, it is still not truly used in integrate with LEO systems. The mathematicalmodel of FDA antennas with dierent geometries for tracking LEO satellite is presented.Then, the radiation characteristics of linear and Planar-FDA under dierent situations areinvestigated. Further, the planar FDA array owns greater superiority over the linear FDAarray, and it can cover the observation space indicating great potential in LEO trackingand communication applications. A ground receiving antenna system based on planar FDAarray antenna is presented for tracking and communicating with (LEO) satellite at groundstation. This is required to minimize a complexity and the cost of ground station. Tomeet the system gure of merit (G/T) requirement, the radiation characteristics, the gainrequirements, the array size, the minimum number of elements and their distribution forseveral FDA array antenna architectures are calculated and analyzed. Moreover, a generaloverview of system temperature is presented including a noise model for FDA array antenna,and the link budget analysis and evaluation are introduced.

Array and Phased Array Antenna Basics

Array and Phased Array Antenna Basics PDF

Author: Hubregt J. Visser

Publisher: John Wiley & Sons

Published: 2006-02-03

Total Pages: 376

ISBN-13: 0470871180

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Reflecting a growing interest in phased array antenna systems, stemming from radar, radio astronomy, mobile communications and satellite broadcasting, Array and Phased Array Antenna Basics introduces the principles of array and phased array antennas. Packed with first-hand practical experience and worked-out examples, this is a valuable learning tool and reference source for those wishing to improve their understanding of basic array antenna systems without relying heavily on a thorough knowledge of electromagnetics or antenna theory. Features a general introduction to antennas and explains the array antenna principle through discussion of the physical characteristics rather than the theory Explores topics often not covered in antenna textbooks, such as active element pattern, array feeding, means of phase changing, array antenna characterisation, sequential rotation techniques and reactively loaded arrays Guides the reader through the necessary mathematics, allowing them to move onto specialist books on array and phased array antennas with a greater understanding of the topic Supported by a companion website on which instructors and lecturers can find electronic versions of the figures An ideal introduction for those without a background in antennas, this clear, concise volume will appeal to technicians, researchers and managers working in academia, government, telecommunications and radio astronomy. It will also be a valuable resource for professionals and postgraduates with some antenna knowledge.

Multibeam Phased Array Antennas

Multibeam Phased Array Antennas PDF

Author: National Aeronautics and Space Administration (NASA)

Publisher: Createspace Independent Publishing Platform

Published: 2018-06-21

Total Pages: 30

ISBN-13: 9781721640386

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In this study, a new architecture for Ka-band multi-beam arrays was developed and demonstrated experimentally. The goal of the investigation was to demonstrate a new architecture that has the potential of reducing the cost as compared to standard expensive phased array technology. The goals of this specific part of the project, as stated in the yearly statement of work in the original proposal are: 1. Investigate bounds on performance of multi-beam lens arrays in terms of beamwidths, volume (size), isolation between beams, number of simultaneous beams, etc. 2. Design a small-scale array to demonstrate the principle. The array will be designed for operation around 3OGHz (Ka-band), with two 10-degree beamwidth beams. 3. Investigate most appropriate way to accomplish fine-tuning of the beam pointing within 5 degrees around the main beam pointing angle. Popovic, Zoya and Romisch, Stefania and Rondineau, Sebastien Goddard Space Flight Center

Phased Array Antenna Beam Steering for Satellite Tracking

Phased Array Antenna Beam Steering for Satellite Tracking PDF

Author: Chee Kyun Ng

Publisher: LAP Lambert Academic Publishing

Published: 2009-11

Total Pages: 116

ISBN-13: 9783838316598

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Nowadays achievements on mobile satellite communication system have prompted the development of several Non Geostationary Earth Orbit (Non-GEO) satellite systems that promises worldwide connectivity for real-time communications. The mobility of Non-GEO satellites require high directivity satellite tacking technique and reliable inter-satellite handover algorithm to ensure that connectivity between end users are not interrupted. Phased array antenna is proposed to obtain high directivity beam for satellite tracking. The mathematical model has demonstrated that a narrow beam with high directivity could be generated. A high directivity beam from phased array antenna is generated and steered to link up with incoming ascending satellite at one end when the connected outgoing descending satellite exceeded the defined critical elevation angle at the other end. It may help to lower the inter-satellite handover delay by accurately tracking the position of the satellite with the same signal level before the handover. This book is recommended for professional, technician, manager, researcher, lecturer or student.

The Geodesic Sphere Phased Array Antenna for Satellite Communication and Air/Space Surveillance - Part 1

The Geodesic Sphere Phased Array Antenna for Satellite Communication and Air/Space Surveillance - Part 1 PDF

Author:

Publisher:

Published: 2004

Total Pages: 0

ISBN-13:

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This report presents a highly desirable, but up to this day not practical, spherical phased array antenna design that provides hemispherical coverage. Consequently it can be used for simultaneous communication and control with multiple satellites and air/space surveillance in the entire sky. The proposed spherical phased array antenna structure consists of a number of near-equilateral triangular planar subarrays - arranged in an icosahedral geodesic dome configuration. This novel architecture design, "the geodesic dome phased array antenna preserves all the advantages of spherical phased array antennas while fabrication is based on its well developed, easily manufactured, and affordable planar array technology.

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