Main Title |
Control of Energy Absorption Rate in Transmission Line Radiofrequency Exposure Systems (Journal Version). |
Author |
Ali, J. S. ;
Elliott, D. J. ;
|
CORP Author |
Health Effects Research Lab., Research Triangle Park, NC. ;Northrop Services, Inc./Environmental Sciences, Research Triangle Park, NC. |
Publisher |
c1987 |
Year Published |
1987 |
Report Number |
EPA/600/J-87/418; |
Stock Number |
PB89-105928 |
Additional Subjects |
Radio frequencies ;
RF systems ;
Biological radiation effects ;
Animal behavior ;
Radiofrequency power ;
Feedback control ;
Radiofrequency generators ;
Exposure ;
Movement ;
Energy absorption ;
Transmission lines ;
Test equipment ;
Laboratory animals ;
Reprints ;
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB89-105928 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
9p |
Abstract |
A frequent problem in the radiofrequency (RF) irradiation of experimental animals in health effects studies is the temporal variation of the specific absorption rate (SAR) with animal movement. An RF power controller which regulates the energy absorption rate has been designed for use with transmission line exposure systems that utilize the power difference method to monitor the SAR. The controller operates by altering the incident power to the exposure cell in order to compensate for the change in RF energy absorption rate due to animal motion. A circuit diagram is presented as well as experimental data under three conditions of exposure. The controller is effective in maintaining the mean value of energy absorption rate at the setpoint value even for the case of a highly active animal. (Copyright (c) 1987 Alan R. Liss, Inc.) |
Supplementary Notes |
Pub. in Bioelectromagnetics, v8 p165-172 1987. Prepared in cooperation with Northrop Services, Inc./Environmental Sciences, Research Triangle Park, NC. |
NTIS Title Notes |
Journal article. |
Title Annotations |
Reprint: Control of Energy Absorption Rate in Transmission Line Radiofrequency Exposure Systems (Journal Version). |
Category Codes |
57V; 68F; 94K; 97R |
NTIS Prices |
Not available NTIS |
Primary Description |
600/11 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
834421995 |
Origin |
NTIS |
Type |
CAT |