Application Of Geometrical Optics To The Design And Analysis Of Microwave Antennas
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Author | : F. Sheppard Holt |
Publisher | : |
Total Pages | : 52 |
Release | : 1967 |
Genre | : Antennas (Electronics) |
ISBN | : |
The basic concepts of geometrical optics together with the additional assumption that lead to the 'geometrical optics approximation' are described here. The eikonal equation is derived and the relationship of exact electromagnetic theory in the limit as wavelength approaches limit of 0 to geometrical optics is made evident. The application of the 'geometrical optics approximation' to phase analysis and synthesis is described and an example of synthesis is presented. The concept of power flow in ray tubes is used to obtain approximations to power distributions in the antenna aperture, in the focal region, and in the far field. Ray analysis is used to determine those feed locations in the focal region that will most nearly collimate the far-field rays that lie in certain desirable planes. The Theorem of Malus is used to formulate the equal path length law and applications are given. Focal surfaces (or caustics) relative to a rectilinear congruence are defined and then used to present a geometrical optics description of the focal region. The equations of the focal surfaces of a paraboloid receiving a plane wave 20 degrees off-axis are calculated and photographs of three-dimensional models of the focal surfaces are shown.
Author | : Air Force Cambridge Research Laboratories (U.S.) |
Publisher | : |
Total Pages | : 400 |
Release | : 1970 |
Genre | : Geophysics |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 1264 |
Release | : 1967 |
Genre | : Aeronautics |
ISBN | : |
Author | : Mario Agio |
Publisher | : Cambridge University Press |
Total Pages | : 481 |
Release | : 2013-01-03 |
Genre | : Science |
ISBN | : 110701414X |
This consistent and systematic review of recent advances in optical antenna theory and practice brings together leading experts in the fields of electrical engineering, nano-optics and nano-photonics, physical chemistry and nanofabrication. Fundamental concepts and functionalities relevant to optical antennas are explained, together with key principles for optical antenna modelling, design and characterisation. Recognising the tremendous potential of this technology, practical applications are also outlined. Presenting a clear translation of the concepts of radio antenna design, near-field optics and field-enhanced spectroscopy into optical antennas, this interdisciplinary book is an indispensable resource for researchers and graduate students in engineering, optics and photonics, physics and chemistry.
Author | : Alan W. Rudge |
Publisher | : IET |
Total Pages | : 726 |
Release | : 1982 |
Genre | : Science |
ISBN | : 9780906048825 |
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.
Author | : |
Publisher | : |
Total Pages | : 704 |
Release | : 1995 |
Genre | : Aeronautics |
ISBN | : |
Author | : John Volakis |
Publisher | : McGraw Hill Professional |
Total Pages | : 1810 |
Release | : 2007-06-08 |
Genre | : Technology & Engineering |
ISBN | : 0071511164 |
The “bible of antenna engineering” fully updated to provide state-of-the-art coverage in antenna design and applications Edited by John L. Volakis, one of the world's leading authorities in antenna engineering, this trusted resource covers all the classic antenna types plus many new types and designs used in communications systems, satellites, radars, and emerging applications from WLAN to automotive systems to biomedical to smart antennas. You will also find expert discussion of topics critical to successful antenna design and engineering, such as measurement techniques and computational methods, a materials guide, wave propagation basics, microwave circuits, and matching techniques, as well as diversity and MIMO propagation models, frequency selective surfaces, and metamaterials. Packed with 1,500 illustrations, the 4th Edition of Antenna Engineering Handbook presents: Step-by-step guidance on most antennas (modern and classic) 59 chapters with 21 new chapters and 38 fully updated chapters from the previous edition Contributions from over 80 well-known antenna experts Full-color insert illustrating many commercial and military antennas Get Quick Access to All of Today's Cutting-Edge Antennas • Printed and Conformal Antennas • Wideband Patch Antennas • Wideband Arrays • Leaky-Wave Antennas • EBG Antennas • UWB Antennas and Arrays • Portable TV Antennas • Reconfigurable Antennas • Active Antennas • Millimeter Wave and TeraHertz Antennas • Fractal Antennas • Handset and Terminal Antennas • Biomedical Antennas • ECM and ESM antennas • Dielectric Resonator Antennas • Lens Antennas • Radiometer Antennas • Satellite Antennas • Reflector and Earth Station Antennas • and Dozens More!
Author | : |
Publisher | : |
Total Pages | : 240 |
Release | : 1980 |
Genre | : Naval research |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 164 |
Release | : 1963 |
Genre | : Science |
ISBN | : |
Author | : Sudhakar Rao |
Publisher | : Artech House |
Total Pages | : 462 |
Release | : 2013-06-01 |
Genre | : Technology & Engineering |
ISBN | : 1608075192 |
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.