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Measurement of RF power-absorption in biological specimens (10 to 100 MHz).

Authors
Greene-FM
Source
NIOSH 1977 Feb; :1-29
Link
NIOSHTIC No.
00070005
Abstract
A method is decribed for accurately determining the radio frequency (rf) power being absorbed by a biological specimen during nonionizing radiation exposure testing using the National Bureau of Standards RF Near-Field Synthesizer in the frequency range 10 to 100 megahertz. This method is based solely on measuring the forward and reflected power on the transmission line feeding the synthesizer. Commercially available rf wattmeters can be used, and an automatic data-acquisition system employed, if desired, to "read" the meters and rapidly calculate, display, and record the rf power flow. The method has the advantage that the exact measuring point on the feed line is not critical, as it is with methods employing direct impendance measurements, and that the required measurements can be made without interfering with the exposure tests.
Keywords
Analytical-methods; Radiation-measurement; Electromagentic-radiation; Radiation-measurement-instrumentation; Electromagnetic-fields; Testing; Bioassaying; Biological-systems
Publication Date
19770201
Document Type
Numbered Publication
Funding Type
Interagency Agreement
Fiscal Year
1977
NTIS Accession No.
PB-274218
NTIS Price
A03
Identifying No.
(NIOSH) 77-146; Interagency-Agreement-IA-75-16
NIOSH Division
DBBS
Source Name
National Institute for Occupational Safety and Health
State
OH
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