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OLS Field Name OLS Field Data
Main Title Near-field radiation properties of simple linear antennas with applications to radiofrequency hazards and broadcasting /
Author Tell, Richard A.
CORP Author Office of Radiation Programs, Las Vegas, NV. Electromagnetic Radiation Analysis Branch.
Publisher Environmental Protection Agency, Office of Radiation Programs, Electromagnetic Radiation Analysis Branch,
Year Published 1978
Report Number ORP-EAD-78-4; EPA ORP/EAD-78-4
Stock Number PB-292 647
OCLC Number 04760645
ISBN pbk.
Subjects Radiation--Measurement. ; Antennas (Electronics) ; Radioactive substances. ; Radiation Protection--Periodicals.
Additional Subjects Dipole antennas ; Monopole antennas ; Electromagnetic fields ; Radiation hazards ; Field strength ; Radio broadcasting ; Television broadcasting ; Gain ; Near field
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJAD  EPA ORP/EAD-78-4 Region 3 Library/Philadelphia, PA 03/14/1998
EJBD ARCHIVE EPA ORP-EAD-78-4 Headquarters Library/Washington,DC 01/18/2011
EJBD  EPA ORP-EAD-78-4 c.1 Headquarters Library/Washington,DC 11/16/2012
NTIS  PB-292 647 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation viii, 39 pages : illustrations, charts ; 28 cm.
Abstract Analytical expressions for the electromagnetic field have been used to compute electric and magnetic field strengths in the near-vicinity of dipole and monopole transmitting antennas. In particular the fields about a half-wave length dipole are mapped to illustrate the magnitude and wide variation of field intensity which occurs near the feed point, along the axis of the dipole, and about the tip of the radiating arms. These results are analyzed in terms of evaluating potential radiofrequency hazards which may exist extremely near dipole like broadcast antennas and the aspect of close proximity exposure of maintenance personnel is discussed. The field expressions are used to determine the extent of near-field gain compression which occurs at distances close to the antenna and this is compared with measured field intensity data taken for a halfwave dipole using a short, nonperturbing field probe. The results for a single dipole are used to model a vertically stacked array of dipole radiating elements used to simulate a typical FM broadcast transmitting antenna. Expected field intensities are then determined for positions close to such radiating structures to assess the potential of biologically significant fields existing about present day FM broadcast installations. It is found that near-field gain compression can be significant for typically encountered building exposures wherein main beam illumination is possible.
Notes "June 1978." "ORP-EAD-78-4." Cover title. Includes bibliographical references (pages 36-39).
Place Published Las Vegas, Nev.
Access Notes Also issued online.
Corporate Au Added Ent United States. Environmental Protection Agency. Electromagnetic Radiation Analysis Branch.
Corp Au Ser Add Ent United States. Technical note - Office of Radiation Programs ; ORP/EAD-78-4.
Title Ser Add Ent Technical note - Office of Radiation Programs ; ORP/EAD-78-4.
PUB Date Free Form 1978
Series Title Untraced Technical note - Office of Radiation Programs ; ORP/EAD-78-4
Category Codes 9E; 49A; 68F
NTIS Prices PC A04/MF A01
Primary Description 200/03
BIB Level m
Cataloging Source OCLC/T
Control Number 323758536
OCLC Time Stamp 20121119163316
Language eng
SUDOCS Number EP 6.10/8:78-4
Origin OCLC
OCLC Rec Leader 01705cam 2200373Ii 45020