An Investigation Into The Behaviour Of Vhf Uhf Antennas In The Proximity Of The Human Body
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An Investigation Into The Behaviour Of Vhf Uhf Antennas In The Proximity Of The Human Body
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Author : S. Kapartis
language : en
Publisher:
Release Date : 1984
An Investigation Into The Behaviour Of Vhf Uhf Antennas In The Proximity Of The Human Body written by S. Kapartis and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with categories.
The Brits Index Subject Index
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Author : British Theses Service
language : en
Publisher:
Release Date : 1989
The Brits Index Subject Index written by British Theses Service and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Dissertations, Academic categories.
The Brits Index
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Author : British Theses Service
language : en
Publisher:
Release Date : 1989
The Brits Index written by British Theses Service and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Dissertations, Academic categories.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1979
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 1979 with Aeronautics categories.
Oar Cumulative Index Of Research Results
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Author :
language : en
Publisher:
Release Date :
Oar Cumulative Index Of Research Results 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 Aeronautics categories.
Vhf Uhf Fixed Station Mast Mounted Antennas System
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Author :
language : en
Publisher:
Release Date : 1998
Vhf Uhf Fixed Station Mast Mounted Antennas System written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with categories.
The purpose of this program is to design, build, test and deliver a VHF-UHF fixed station mast mounted antenna system. Antenna Products proposed three configurations to investigate in an effort to achieve an acceptable system. Configuration A consisted of combining a VHF monopole/counterpoise antenna and a UHF collinear antenna. During the investigation it was found that the counterpoise did not properly terminate the radiating structure when the radials are less than a quarter wavelength long. The performance is characterized by a loss of gain at the lower frequencies. A full size structure would be larger and heavier than a dipole antenna. Therefore, no further investigation of configuration was undertaken. Configuration B consists of combining a VHF vertical half-rhombic antenna system and a UHF collinear antenna. The rhombic antenna system was envisioned as two rhombic curtains mounted orthogonally about a 10 meter mast and would serve as guys for the mast. The UHF antenna would mount on top of the mast. It has been determined that to achieve reasonably omnidirectional azimuth patterns it is necessary to use four rhombic curtains in an azimuth array. At the interim report, the height of the antenna was 10 meters and the radius was 25 meters. Further investigations have lead to a 10 meter tall structure with 10 meter radius that uses six equally spaced slant wires that are fed in-phase near ground and connected at the top of the tower. A UHF collinear dipole array mounts on top of the dielectric mast. A prototype of this antenna is available for shipment to CECOM for further evaluation. The propagation mode for this antenna is surfacewave instead of spacewave as commonly experienced when two antennas are mounted on masts above the earth's surface. Therefore, field tests should be conducted to determine the suitability of the antenna for the application.
Research In Education
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Author :
language : en
Publisher:
Release Date : 1972
Research In Education written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with Education categories.
Exposure Metrics And Dosimetry For Emf Epidemiology
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Author : A. F. McKinlay
language : en
Publisher:
Release Date : 1999
Exposure Metrics And Dosimetry For Emf Epidemiology written by A. F. McKinlay and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with ELF electromagnetic fields categories.
Resources In Education
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Author :
language : en
Publisher:
Release Date : 1972
Resources In Education written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with Education categories.
Broadcasting
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Author :
language : en
Publisher:
Release Date : 1960-11
Broadcasting written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1960-11 with Broadcasting categories.