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The Wide Angle Side Lobes Of Reflector Antennas
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Book Synopsis The Wide Angle Side Lobes of Reflector Antennas by : P. A. J. Ratnasiri
Download or read book The Wide Angle Side Lobes of Reflector Antennas written by P. A. J. Ratnasiri and published by . This book was released on 1970 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: The complete pattern of a parabolic reflector antenna was calculated using the singly-diffracted rays of the geometrical theory of diffraction, with proper corrections for the forward and real axial directions. Excellent agreement with experimental patterns can be expected, if the aperture blockage is not significant. The solution has the usual advantages of a solution based on the geometrical theory of diffraction, namely, it is obtained in the form of simple functions, its computation cost is low, it is directly related to the radiation mechanism of the antenna and so it can be readily used in the design problem, and it can be easily extended and modified as the need arises. (Author).
Book Synopsis Wide Angle Slide Lobes of Reflector Antennas by : Pittungpay Appuhamylage Janaka Ratnasiri
Download or read book Wide Angle Slide Lobes of Reflector Antennas written by Pittungpay Appuhamylage Janaka Ratnasiri and published by . This book was released on 1969 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Reflector Antennas and Feed Systems Volume I: Theory and Design of Reflectors by : Satish K. Sharma
Download or read book Handbook of Reflector Antennas and Feed Systems Volume I: Theory and Design of Reflectors written by Satish K. Sharma and published by Artech House. This book was released on 2013-07-01 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first truly comprehensive and most up-to-date handbook available on modern reflector antennas and feed sources for diversified space and ground applications. There has never been such an all-encompassing reflector handbook in print, and no currently available title offers coverage of such recent research developments. The Handbook consists of three volumes. Volume I provides a unique combination of theoretical underpinnings with design considerations and techniques. The need for knowledge in reflector antennas has grown steadily over the last two decades due to increased use in space and ground applications, as well as their high gain and wide bandwidth capabilities at relatively low cost. This volume brings you to the leading edge of developments in the field related to numerical techniques, classical reflector geometries, adaptive reflector antennas, shaped reflectors, bifocal and bicollimated dual reflectors, advanced reflectors, and reflect arrays. A must-have reference for both practicing engineers as well as academic researchers.
Book Synopsis A Comparison of Reflector Antenna Designs for Wide-angle Scanning by :
Download or read book A Comparison of Reflector Antenna Designs for Wide-angle Scanning written by and published by . This book was released on 1989 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reflector and Lens Antennas by : Carlyle J. Sletten
Download or read book Reflector and Lens Antennas written by Carlyle J. Sletten and published by Artech House Publishers. This book was released on 1988 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Theory of Reflector Antennas by : Carlyle J. Sletten
Download or read book The Theory of Reflector Antennas written by Carlyle J. Sletten and published by . This book was released on 1966 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Antenna Theory by : Constantine A. Balanis
Download or read book Antenna Theory written by Constantine A. Balanis and published by John Wiley & Sons. This book was released on 2012-12-03 with total page 1165 pages. Available in PDF, EPUB and Kindle. Book excerpt: The discipline of antenna theory has experienced vast technological changes. In response, Constantine Balanis has updated his classic text, Antenna Theory, offering the most recent look at all the necessary topics. New material includes smart antennas and fractal antennas, along with the latest applications in wireless communications. Multimedia material on an accompanying CD presents PowerPoint viewgraphs of lecture notes, interactive review questions, Java animations and applets, and MATLAB features. Like the previous editions, Antenna Theory, Third Edition meets the needs of electrical engineering and physics students at the senior undergraduate and beginning graduate levels, and those of practicing engineers as well. It is a benchmark text for mastering the latest theory in the subject, and for better understanding the technological applications. An Instructor's Manual presenting detailed solutions to all the problems in the book is available from the Wiley editorial department.
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721995134 Total Pages :30 pages Book Rating :4.9/5 (951 download)
Book Synopsis A Comparison of Reflector Antenna Designs for Wide-Angle Scanning by : National Aeronautics and Space Administration (NASA)
Download or read book A Comparison of Reflector Antenna Designs for Wide-Angle Scanning written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-28 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conventional reflector antennas are typically designed for up to + or - 20 beamwidths scan. An attempt was made to stretch this scan range to some + or - 300 beamwidths. Six single and dual reflector antennas were compared. It is found that a symmetrical parabolic reflector with f/D = 2 and a single circular waveguide feed has the minimum scan loss (only 0.6 dB at Theta sub 0 = 8 deg, or a 114 beamwidths scan). The scan is achieved by tilting the parabolic reflector by an angle equal to the half-scan angle. The f/D may be shortened if a cluster 7 to 19 elements instead of one element is used for the feed. The cluster excitation is adjusted for each new beam scan direction to compensate for the imperfect field distribution over the reflector aperture. The antenna can be folded into a Cassegrain configuration except that, due to spillover and blockage considerations, the amount of folding achievable is small. Zimmerman, M. and Lee, S. W. and Houshmand, B. and Rahmat-Samii, Y. and Acosta, R. Glenn Research Center; Jet Propulsion Laboratory RTOP 650-60-20...
Book Synopsis Reflector Antennas by : Allan Walter Love
Download or read book Reflector Antennas written by Allan Walter Love and published by IEEE Computer Society Press. This book was released on 1978 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Reflector Antennas and Feed Systems Volume III: Applications of Reflectors by : Sudhakar Rao
Download or read book Handbook of Reflector Antennas and Feed Systems Volume III: Applications of Reflectors written by Sudhakar Rao and published by Artech House. This book was released on 2013-06-01 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first truly comprehensive and most up-to-date handbook available on modern reflector antennas and feed sources for diversified space and ground applications. There has never been such an all-encompassing reflector handbook in print, and no currently available title offers coverage of such recent research developments. The Handbook consists of three volumes. Volume III focuses on the range of reflector antenna applications, including space, terrestrial, and radar. The intent of this book volume is to provide practical applications and design information on reflector antennas used for several communications systems. This book covers recent developments of reflector antennas used for satellite communications, terrestrial communications, and remote sensing applications. New subjects are introduced for the first time, including satellite antennas, Terahertz antennas, PIM, multipaction, corona, deployable mesh reflector antennas, and mechanical aspects of reflector antennas. In addition, this book contains a separate topic on integrated feed assembly for reflector antennas covering analysis, design, fabrication, and test.
Book Synopsis A GTD Analysis of the Circular Reflector Antenna Including Feed and Strut Scatter by : S. H. Lee
Download or read book A GTD Analysis of the Circular Reflector Antenna Including Feed and Strut Scatter written by S. H. Lee and published by . This book was released on 1977 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recently, the wide angle side lobes of a circular reflector antenna pattern were calculated by the Geometrical Theory of Diffraction and an overall pattern can be obtained from a combination of GTD and aperture integration methods. In this report, the analysis is extended to include the scattering from the feed supports. The feed support scattering is treated using the concept of equivalent current line source. The cylinder scattering model developed in this report gives the effect of strut scattering on the wide angle side lobes of the reflector. The scattering from the feed struts always has its greatest effect near the scattering cones for each strut. These scattering cones usually give rise to a maximum aperture blockage effect in certain off-principal plane patterns. The analysis given here can be used to compute the complete pattern of any arbitrary plane cut for a practical circular reflector antenna system. (Author).
Book Synopsis The Paraboloidal Reflector Antenna in Radio Astronomy and Communication by : Jacob W. M. Baars
Download or read book The Paraboloidal Reflector Antenna in Radio Astronomy and Communication written by Jacob W. M. Baars and published by Springer Science & Business Media. This book was released on 2007-08-06 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radio astronomers have developed techniques of calibration of large reflector antennas with radio astronomical methods, but these have not been comprehensively described. This text aims to fill this gap, taking a practical approach to the characterisation of antennas. All calculations and results in the form of tables and figures have been made with Mathematica by Wolfram Research. The reader can use the procedures for the implementation of his own input data.
Book Synopsis Minimization of the Side Lobes of a Multi-feed Parabolic Reflector Antenna by : James Joseph Meyers
Download or read book Minimization of the Side Lobes of a Multi-feed Parabolic Reflector Antenna written by James Joseph Meyers and published by . This book was released on 1984 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Handbook of Antenna Design by : Alan W. Rudge
Download or read book The Handbook of Antenna Design written by Alan W. Rudge and published by IET. This book was released on 1982 with total page 726 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the fundamental background theory and analytical techniques of antenna design. It deals with a very wide range of antenna types, operating from very low frequencies to millimetre waves.
Book Synopsis Low Sidelobe Reflector Antenna Design for Communications by : Nelson A. Armas
Download or read book Low Sidelobe Reflector Antenna Design for Communications written by Nelson A. Armas and published by . This book was released on 1993 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt: The current antenna used in the Marine Radio AN/MRC-142 is a focal point fed reflector with a first sidelobe of -10 dB. A new antenna design is required with a sidelobe reduction of another 10 dB, and a minimum impact on the system upgrade cost. An improved feed consisting of a fed dipole and disk in the vicinity of a parasitic ring was designed for use with the current reflector. The disk acts as a ground plane for the dipole, with the ring narrowing the beamwidth. resulting in a stronger edge taper on the reflector. An existing computer code based on the method of moments was used to compute the gain and the radiation pattern. Circular parabolic reflectors of 36 inches and 48 inches were analyzed. The results show that the 36 inch reflector cannot satisfy the conditions over the entire frequency band (1350 to 1850 MHz) simultaneously. The 48 inch reflector came very close to satisfying all the conditions, although the sidelobe level is off by approximately 2 dB at wide angles in the H-plane.
Book Synopsis Handbook of Reflector Antennas and Feed Systems Volume II: Feed Systems by : Lotfollah Shafai
Download or read book Handbook of Reflector Antennas and Feed Systems Volume II: Feed Systems written by Lotfollah Shafai and published by Artech House. This book was released on 2013-07-01 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first truly comprehensive and most up-to-date handbook available on modern reflector antennas and feed sources for diversified space and ground applications. There has never been such an all-encompassing reflector handbook in print, and no currently available title offers coverage of such recent research developments. The Handbook consists of three volumes. Volume II focuses on feed sources. Reflector antennas are extraordinary devices that combine high gain with geometrical simplicity, and can operate in broad frequency bands. Their performance, however, depends on the electrical characteristics of the feed system with which they operate. This comprehensive volume provides you with a solid understanding of feed system theory, design, and analysis. Featuring chapters authored by experts in each aspect of feed systems, this book takes you from fundamental mathematical techniques, electrically small and large dual reflectors, feed geometry and telemetry, tracking and command antennas, and more. Throughout the book numerous examples are provided to guide you in the practical aspects of feed design.
Book Synopsis Wide angle radiation pattern calculation of paraboloidal reflector antennas by : M. H. A. J. Herben
Download or read book Wide angle radiation pattern calculation of paraboloidal reflector antennas written by M. H. A. J. Herben and published by . This book was released on 1991 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt:
