A Sixteen Element Sbf Array
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A Sixteen Element Sbf Array
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Author : Hermann W. Ehrenspeck
language : en
Publisher:
Release Date : 1972
A Sixteen Element Sbf Array written by Hermann W. Ehrenspeck and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with Antenna arrays categories.
Sixteen-element short-backfire arrays have been shown to yield maximum gains of approximately 25 dB. The influence of parameter variations on the array patterns and directivity has been experimentally determined by varying the frequency. A table of the normalized design parameters for an area efficiency of approximately 90 percent is given for construction purposes. All array dimensions are indicated in wavelengths so that each application can easily be scaled for any desired frequency range.
An Eight Element Sbf Fan Beam Array
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Author : Hermann W. Ehrenspeck
language : en
Publisher:
Release Date : 1974
An Eight Element Sbf Fan Beam Array written by Hermann W. Ehrenspeck and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with Antenna arrays categories.
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.
An Sbf Array For Reception Of Atmospheric Noise
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Author : J. A. Strom
language : en
Publisher:
Release Date : 1974
An Sbf Array For Reception Of Atmospheric Noise written by J. A. Strom and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with Antenna arrays categories.
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.
Instrumentation Papers
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Author :
language : en
Publisher:
Release Date :
Instrumentation Papers written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with Aeronautical instruments categories.
The Four Element Sbf Array
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Author : Hermann W. Ehrenspeck
language : en
Publisher:
Release Date : 1971
The Four Element Sbf Array written by Hermann W. Ehrenspeck and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1971 with Antenna arrays categories.
Four-element short-backfire (SBF) arrays have been shown to yield maximum gains of approximately 20 dB. The influence of parameter variations on the array patterns has been experimentally determined. Specific parameter values required to yield certain pattern characteristics--for example, highest gain, lowest sidelobe level, equal half-power beamwidth, or equal beam shapes in both the E and H planes--have been established. Tables of the normalized design parameters are given for construction purposes. All array dimensions are indicated in wavelengths so that each model can easily be scaled for any desired frequency range. (Author).
Bibliography With Abstracts Of Afcrl Publications From 1 October To 31 December 1972
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Author : Air Force Cambridge Research Laboratories (U.S.)
language : en
Publisher:
Release Date : 1973
Bibliography With Abstracts Of Afcrl Publications From 1 October To 31 December 1972 written by Air Force Cambridge Research Laboratories (U.S.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with Geophysics categories.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1973
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with Aeronautics categories.
Short Backfire Arrays
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Author : Hermann W. Ehrenspeck
language : en
Publisher:
Release Date : 1971
Short Backfire Arrays written by Hermann W. Ehrenspeck and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1971 with Antenna arrays categories.
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).
Report On Research At Afcrl
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Author : Air Force Cambridge Research Laboratories (U.S.)
language : en
Publisher:
Release Date : 1972
Report On Research At Afcrl written by Air Force Cambridge Research Laboratories (U.S.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with Geophysics categories.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1983
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Aeronautics categories.
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.