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RF Dielectric Properties and Measurement System: Human and Animal Data.

Authors
Toler-Jan
Source
NIOSH 1977 Jul:86 pages
Link
NIOSHTIC No.
00080701
Abstract
A system was developed for accurately and repeatedly measuring the relative dielectric constant and conductivity of phantom modeling research materials. The frequency range of interest was 10 to 100MHz. The system is based on an antenna modeling theorem relating the impedance of a short monopole antenna in air to its impedence in dielectric media with high radiofrequency power absorption such as phantom modeling materials and biological tissues. System implementation resulted in an equipment configuration consisting of a signal source, network analyzer, and small in-vivo probe. By comparing measured electrical property data with corresponding reference data published in the open literature system, accuracy and repeatability were demonstrated. Water, methanol (67561), ethylene- glycol (107211), saline solutions, and phantom modeling materials were used in this data comparison. Accuracies within plus or minus 5% were demonstrated for both discrete and swept frequency measurements.
Keywords
NIOSH-Contract; Contract-210-76-0136; Physical-properties; Electromagnetic-properties; Biological-effects; Electrical-measurement-devices; Electric-fields; Nonionizing-radiation; Analytical-models; Biological-tissue;
CAS No.
67-56-1; 107-21-1;
Publication Date
19770701
Funding Type
Contract;
Fiscal Year
1977
NTIS Accession No.
NTIS Price
Identifying No.
Contract-210-76-0136
NIOSH Division
DBBS;
Source Name
Division of Biomedical and Behavioral Sciences, NIOSH
State
GA;
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