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Author : Hermann W. Ehrenspeck
Publisher : Unknown
Page : 12 pages
File Size : 47,9 Mb
Release : 1965
Category : Antennas (Electronics)
ISBN : UOM:39015095127919
Author : Hermann W. Ehrenspeck,John A. Strom
Publisher : Unknown
Page : 24 pages
File Size : 54,8 Mb
Release : 1971
Category : Antenna arrays
ISBN : UOM:39015095290824
The short backfire (SBF) antenna consisting of a large reflector illuminated by a dipole feed and smaller disk reflector produces a gain of 15 dB above isotropic. As an array element it has been efficiently adapted for various configurations of high-gain antennas producing gains of up to 25 dB, with a single SBF element capable of replacing four to six elements of a conventional multidipole array. Farfield patterns and directivity measurements are presented for a single element and for a twin element mounted on a common reflector. Optimized dimensions for both cases are discussed for possible application to more complex types of antennas.
Author : Alan W. Rudge
Publisher : IET
Page : 726 pages
File Size : 49,8 Mb
Release : 1982
Category : Science
ISBN : 0906048826
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 : Hermann W. Ehrenspeck,John A. Strom
Publisher : Unknown
Page : 40 pages
File Size : 47,9 Mb
Release : 1971
Category : Antenna arrays
ISBN : UOM:39015095290600
Short-backfire (SBF) antennas can be simply converted into highly directive and efficient array elements. Each SBF element is the equivalent of four to six dipole elements of conventional multielement arrays. Models of two-, four-, and eight-element SBF arrays have yielded gains of 17, 19, and 22 dB, respectively. Radiation patterns are presented, including the sum and difference patterns in the two major planes (E and H), as well as those for diagonal cuts at plus or minus 45 degrees. All physical dimensions are given in wavelengths so that each model can be easily scaled for any desired frequency. (Author).
Author : Hermann W. Ehrenspeck
Publisher : Unknown
Page : 10 pages
File Size : 51,5 Mb
Release : 1965
Category : Antennas (Electronics)
ISBN : UOM:39015095127612
Author : Tsing-zone Hsieh
Publisher : Unknown
Page : 498 pages
File Size : 45,7 Mb
Release : 1971
Category : Antennas (Electronics)
ISBN : MSU:31293030829240
Author : Hermann W. Ehrenspeck
Publisher : Unknown
Page : 42 pages
File Size : 50,6 Mb
Release : 1974
Category : Antenna arrays
ISBN : UOM:39015095306489
Eight short backfire (SBF) elements aligned on a common planar reflector form a highly efficient fan-beam array capable of yielding a maximum gain of approximately 24 dB. The influence of parameter variations on the array patterns and directivity was experimentally determined by varying the frequency. Normalized design parameters for highest efficiency and for circular polarization capability are tabulated. All array dimensions are given in wavelengths so that each application can easily be scaled for any desired frequency.
Author : Francis J. Zucker
Publisher : Unknown
Page : 8 pages
File Size : 46,5 Mb
Release : 1966
Category : Antennas (Electronics)
ISBN : UOM:39015095129113
Author : Anonim
Publisher : Unknown
Page : 276 pages
File Size : 51,6 Mb
Release : 1967
Category : Aeronautics, Military
ISBN : UOM:39015026745342
Author : Thomas A. Milligan
Publisher : John Wiley & Sons
Page : 646 pages
File Size : 47,8 Mb
Release : 2005-07-11
Category : Technology & Engineering
ISBN : 9780471457763
A practical book written for engineers who design and use antennas The author has many years of hands on experience designing antennas that were used in such applications as the Venus and Mars missions of NASA The book covers all important topics of modern antenna design for communications Numerical methods will be included but only as much as are needed for practical applications
Author : Anonim
Publisher : Unknown
Page : 252 pages
File Size : 47,9 Mb
Release : 1967
Category : Aeronautics
ISBN : CORNELL:31924004399394
Author : Warren L. Stutzman,Gary A. Thiele
Publisher : John Wiley & Sons
Page : 848 pages
File Size : 50,5 Mb
Release : 2012-05-22
Category : Technology & Engineering
ISBN : 9780470576649
Stutzman's 3rd edition of Antenna Theory and Design provides a more pedagogical approach with a greater emphasis on computational methods. New features include additional modern material to make the text more exciting and relevant to practicing engineers; new chapters on systems, low-profile elements and base station antennas; organizational changes to improve understanding; more details to selected important topics such as microstrip antennas and arrays; and expanded measurements topic.
Author : Air Force Cambridge Research Laboratories (U.S.)
Publisher : Unknown
Page : 336 pages
File Size : 55,5 Mb
Release : 1972
Category : Geophysics
ISBN : UOM:39015095135995
Author : Anonim
Publisher : Unknown
Page : 170 pages
File Size : 49,6 Mb
Release : 1971
Category : Bibliography
ISBN : UOM:39015095134071
Author : J. A. Strom,Hermann W. Ehrenspeck
Publisher : Unknown
Page : 32 pages
File Size : 42,5 Mb
Release : 1974
Category : Antenna arrays
ISBN : UOM:39015095130699
A four-element short-backfire array was designed, fabricated, and experimentally tested for use as a receiving antenna of low level atmospheric noise at 920 MHz. A complete set of design dimensions is presented as well as the resultant radiation patterns and frequency curves of sidelobe levels, half-power beamwidths, and input impedance. The effects of variations on the size and shape of the main reflector are discussed, especially when efficient operation with low sidelobes or high gain is of prime importance. Supporting data and tables of optimum design dimension are also provided for future VHF or UHF antenna applications in the gain range of 17 to 20 dB.